The Calendars by Readdle Insider’s Guide
Everything we know about Calendars by Readdle in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
Calendars by Readdle
The Insider’s Guide
Calendar and task planner for iPhone, iPad, Mac and Apple Watch
Every plan, grade, refund rule and rival among calendar and scheduling apps, read from Calendars by Readdle’s own pages.
Made by Readdle Limited · checked Oct 5, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05After you payGetting your money back, getting out, and getting help
- 06The alternativesThe tools it is most often weighed against, side by side
- 07Quick answersThe questions people ask about it, each answered in a line or two
- 08About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Calendars by Readdle’s own pages, its app-store listings and our grades. Every fact in it is on Calendars by Readdle’s page too, where it is kept up to date. Checked Oct 5, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
3.0
GPA, above 57 of the 74 other calendar and scheduling apps we grade
Calendars is Readdle's calendar and planner app for Apple devices. It brings Google, iCloud, Outlook and Exchange calendars into one view, shows tasks from Apple Reminders or Google Tasks next to events, and accepts events typed in plain language. The app is free to download with a basic calendar; most of the planner features sit behind the Calendars PRO subscription, sold through the App Store.
To get you started, here are 10 things to know about Calendars by Readdle, taken from its own pages and our grades.
- 1
Best for events and tasks in one planner on Apple devices
The free plan is a basic calendar with one alert per event: tasks, a second account, recurring events and typed entry are all PRO.
- 2
Paid plans start at $1.67 a month when paid by the year
As its pricing page puts it: $19.99 per year, or $3.99 per month (US App Store in-app purchases).
- 3
There is a free plan
a basic calendar with one alert per event. Tasks, multiple accounts, recurring events, natural language input and weather are part of Calendars PRO.
- 4
It runs on 2 platforms
macOS and iOS.
- 5
Several calendar accounts in one view
Connect Google, iCloud, Outlook and Exchange calendars, color-code them and hide the ones you do not need. Adding more than one account is a PRO feature.
- 6
Tasks next to events
Tasks sync through Apple Reminders or Google Tasks and appear in the planner with due dates and repeats. Events and tasks can be rescheduled by drag and drop.
- 7
Natural language input
Type a title such as "Coffee with Alex next Tuesday at 9 am" and the app fills in the date and time. It works in English, German, French, Italian, Spanish and Russian, on PRO.
- 8
Refunds: 30 days
It depends entirely on where you bought it, and the gap is wide. Buy from Readdle's website and the terms promise a full refund within 30 days on a yearly or lifetime plan and 14 days on a monthly one.
- 9
A 3.0 GPA, above 57 of 74
That is against the other calendar and scheduling apps we grade, on value, the free plan, features, ease of use and platforms.
- 10
Keep it
The plain part of Calendars by Readdle you could make: calendar, tasks, natural-language input and habit tracking. What surrounds it you could not. The 5 things listed below take a company, not a weekend.
Calendars by Readdle at a glance
- Pricing
- Free plan, from $19.99 per year, or $3.99 per month (US App Store in-app purchases)
- Free plan
- Yes
- Free trial
- 7-day free trial of Calendars PRO; the subscription is charged when the trial ends unless canceled
- Runs on
- macOS, iOS
- Made by
- Readdle Limited
- Category
- Calendar & Scheduling
- Our grade
- 3.0 GPA, very good
- Store rating
- 4.7 on the App Store, 122,005 ratings
The report card
Best for events and tasks in one planner on Apple devices
Calendars by Readdle puts Google, iCloud, Outlook and Exchange calendars in one view on Apple devices, with tasks next to events, and PRO is $19.99 a year. The free plan is a basic calendar with one alert per event: tasks, a second account, recurring events and typed entry are all PRO. The 7-day trial charges you when it ends unless you cancel, and there's no Windows, Android or web version.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | A | PRO is $19.99 a year, so $1.67 a month, against a $6 middle in this category. One subscription covers Mac, iPhone, iPad and Apple Watch, and Readdle announced a Lifetime option at $59.99. |
| Free plan and trial | C | The free plan is a basic calendar with one alert per event. Tasks, a second account, recurring events and plain-language input are all PRO, so you'll hit the wall in week one. The 7-day trial charges you when it ends unless you cancel. |
| Features | B | Google, iCloud, Outlook and Exchange in one view, tasks from Apple Reminders or Google Tasks beside your events, plain-language typing, Zoom and Meet links, Google Workspace room booking, a habit tracker and mood logging. That's the whole planner job covered. |
| Ease of use | A | 4.7 from about 122,000 App Store ratings. Typing "Coffee with Alex next Tuesday at 9 am" fills in the date for you, though that typed entry is a PRO feature. |
| Platforms and integrations | C | iPhone, iPad, Mac, Apple Watch and Apple Vision, connecting Google, Outlook and Exchange accounts. One family of devices, though: no Windows, no Android, no web. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who Calendars by Readdle is for
- Fits if you're on iPhone, iPad and Mac and want events and tasks in one planner
- Works for Google Workspace users who book meeting rooms and check coworkers' schedules, on PRO
Who it is not for
- Skip it if you use Windows or Android, as it's Apple devices only, with no web version
- Tight if you're staying free: one alert per event, and tasks, a second account, recurring events and typed entry all need PRO
- Watch out: the 7-day trial rolls into a paid subscription unless you cancel
- Watch out: the App Store lists yearly PRO at both $19.99 and $21.99, and Readdle says prices vary by region
- Watch out: the $59.99 Lifetime option may still charge for some major future updates
Good to know
Good for
- People on iPhone, iPad and Mac who want events and tasks in one planner
- Google Workspace users who book rooms and check coworkers' schedules
- Anyone who prefers typing events in plain language
Worth knowing
- Apple devices only: the App Store listing covers iPhone, iPad, Mac, Apple Watch and Apple Vision. No Windows, Android or web version is listed.
- The free plan is a basic calendar; tasks, multiple accounts, recurring events, natural language input and weather need Calendars PRO.
- Free users get one alert per event, while PRO allows up to five.
- There is no Mac-only purchase: PRO is a single cross-platform subscription, and Readdle says its price varies by region and local taxes.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$1.67
A month to start, paid by the year. There is a free plan too
Calendars by Readdle has a free plan. Paid plans start at $19.99 per year, or $3.99 per month (US App Store in-app purchases).
The free plan is a basic calendar with one alert per event.
Free
$0
A basic calendar with one alert per event; the planner features listed under PRO are not included.
Calendars PRO (Monthly)
$3.99
per month, US App Store in-app purchase
Tasks, multiple accounts, recurring events, natural language input, up to five alerts, weather and use across Mac, iPhone, iPad and Apple Watch.
Calendars PRO (Yearly)
$19.99
per year, US App Store in-app purchase
The same PRO features billed yearly. The US App Store lists one-year items at both $19.99 and $21.99; Readdle's own site cites $19.99.
The free plan
a basic calendar with one alert per event. Tasks, multiple accounts, recurring events, natural language input and weather are part of Calendars PRO.
Trying it first
7-day free trial of Calendars PRO; the subscription is charged when the trial ends unless canceled
Read from apps.apple.com on Oct 5, 2026.
Ways to pay less
Annual discount
Yearly PRO costs less than 12 months of monthly
The US App Store lists Calendars PRO at $3.99 for one month and $19.99 for one year, so a year bought monthly would come to $47.88.
Stated on apps.apple.comLifetime license
One-time Lifetime purchase
Readdle announced a Lifetime option in June 2024 at $59.99 in the US, with Family Sharing support. Some major future updates may cost extra.
Stated on readdle.comEducation
Educational discount with a school email
Readdle's Calendars page lets students and educators verify an educational email address to receive a discount link. The size of the discount is not stated.
Stated on readdle.com
What the app costs elsewhere
Each country’s App Store price for “Calendars PRO 1 Year”, against $19.99 in the United States, in dollars at the day’s rate. The four cheapest and the four dearest of 11.
| Country | Price there | In dollars | Against the US |
|---|---|---|---|
| Turkey | ₺144,99 | $2.95 | 85% less |
| Indonesia | Rp 279ribu | $15.60 | 22% less |
| Brazil | R$ 82,90 | $16.56 | 17% less |
| Philippines | ₱ 1,050.00 | $16.71 | 16% less |
| Australia | $32.99 | $23.03 | 15% more |
| Germany | 21,99 € | $24.64 | 23% more |
| Mexico | $459.00 | $25.22 | 26% more |
| United Kingdom | £19.49 | $25.77 | 29% more |
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
2
Places it runs: macOS and iOS
Calendar and task planner for iPhone, iPad, Mac and Apple Watch. Here is what it does, as its own site describes it, and what it covers: tasks, natural-language input, calendar, habit tracking.
iPhone, iPad, Mac, Apple Watch and Apple Vision, connecting Google, Outlook and Exchange accounts.
- Several calendar accounts in one view
- Connect Google, iCloud, Outlook and Exchange calendars, color-code them and hide the ones you do not need. Adding more than one account is a PRO feature.
- Tasks next to events
- Tasks sync through Apple Reminders or Google Tasks and appear in the planner with due dates and repeats. Events and tasks can be rescheduled by drag and drop.
- Natural language input
- Type a title such as "Coffee with Alex next Tuesday at 9 am" and the app fills in the date and time. It works in English, German, French, Italian, Spanish and Russian, on PRO.
- Video call links
- Join Zoom, Google Meet or GoToMeeting calls directly from the event, and invite attendees from inside the app.
- Google Workspace rooms and coworkers
- With a Google Workspace account, PRO subscribers can book meeting rooms from an event and view coworkers' schedules next to their own.
- Habit tracker and reflections
- Build routines with a habit tracker, log mood, stress and energy in Personal Reflections, and follow a built-in productivity course.
Where it runs
- macOS
- iOS
What it works with
- Google Calendar
- iCloud
- Outlook
- Microsoft Exchange
- Google Tasks
- Apple Reminders
- Zoom
- Google Meet
Calendars by Readdle is made by Readdle Limited.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
57/74
Other calendar and scheduling apps it is graded above
Calendars by Readdle's GPA of 3.0 is higher than 57 of the 74 other calendar and scheduling apps we grade, and level with 8.
It stands best on ease of use (A, above 62 of 74) and worst on free plan and trial (C, above 3).
Its paid plans start at $1.67 a month when paid by the year, against a middle price of $6 for the category: 4 of the 52 others that charge start lower.
On features, ease of use and platforms it scores 3.0 out of 4. 1 tool scores higher and costs less.
Each grade against the category
Every bar is all 75 calendar and scheduling apps we grade, cut by the letter each got. Calendars by Readdle’s own letter is outlined.
- AValue for moneyAbove 45 of 74
- CFree plan and trialAbove 3 of 74
- BFeaturesAbove 47 of 74
- AEase of useAbove 62 of 74
- CPlatforms and integrationsAbove 10 of 74
Price against what you get
Each dot is one of 67 calendar and scheduling apps. Further left costs less; higher up scores better on features, ease of use and platforms. Calendars by Readdle is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
The plain part of Calendars by Readdle you could make: calendar, tasks, natural-language input and habit tracking. What surrounds it you could not. The 5 things listed below take a company, not a weekend.
It is one of the better ones too: its GPA of 3.0 is higher than 57 of the 74 other calendar and scheduling apps we grade. It costs $19.99 a year.
What you could make
- Calendar, tasks, natural-language input and habit tracking: an app builder makes these well.
What you could not
- Apps for macOS and iOS that stay in step with each other.
- It plugs into other products, Google Calendar, iCloud and Outlook among them.
- Hooks into the device itself: an Apple Watch app.
- Sharing with other people, which means accounts and invitations.
- The depth: we grade its features B, which means it covers the whole job.
What this rests on. Calendars by Readdle’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Refunds
After you pay
Getting your money back, getting out, and getting help
What happens once you have paid: whether you can get your money back, how to leave, and how to reach a person when something goes wrong. Each is graded from Calendars by Readdle’s own terms and help pages.
Refunds and cancelling
Good · checked Oct 18, 2026
It depends entirely on where you bought it, and the gap is wide. Buy from Readdle's website and the terms promise a full refund within 30 days on a yearly or lifetime plan and 14 days on a monthly one. Buy the subscription inside the app, which is how most people will, and Readdle says it cannot refund you at all: that is Apple's decision. Either way you have to write in rather than press a button, so it is a B.
- Refund window
- 30 days
- How you cancel
- Yourself, in settings
- Getting your money back
The terms say a subscription bought through Readdle's website can be cancelled and refunded within 14 days of purchase for a monthly plan, or 30 days for an annual or lifetime one, with a full refund to the same payment method once you contact Readdle. After that nothing is refunded unless the law requires it. For an App Store purchase the terms send you to Apple and say Readdle has no control over the decision.
Stated on readdle.com- How to cancel Calendars by Readdle
A subscription bought on Readdle's website, or inside the version of the app downloaded from it, is cancelled in the Stripe Customer Portal, reached from a link in the purchase confirmation email or from the app's settings. One bought through the App Store has to be cancelled manually in Apple Account settings. Cancelling takes effect at the end of the current period, and deleting the app does not cancel anything.
- For an App Store subscription, open the Settings app on your iPhone or iPad
- Tap your name, then Subscriptions
- Tap the subscription for the Calendars app
- Tap Cancel Subscription, scrolling down if you cannot see the button
- For a subscription bought on Readdle's website, open the Stripe Customer Portal from the confirmation email or the app's settings instead
- What you keep afterwards
The terms say cancelling takes effect at the end of the current subscription period, does not close your account, and leaves you with the app's free functions. A help article describes the free plan as a basic calendar, with tasks, multiple accounts, recurring events, natural language input, weather and cross-device access all part of PRO. No page read covers exporting or deleting your data.
Stated on readdle.com- Renewals
The terms say a subscription renews automatically at the then-current rate unless you cancel at least 24 hours before the billing date, and that the rate at renewal may differ from what you first paid. The help article on the free trial says the same in practice: cancel at least a day before the trial ends or you are charged. No reminder before a renewal is mentioned.
Stated on readdle.com
In your favour
- Buy on Readdle's website and the terms promise a full refund within 30 days on a yearly or lifetime plan.
- There is a stated window for monthly website buyers too, at 14 days, not just for the yearly plan.
- Cancelling leaves your account alone and you keep the free version of the app.
- The help centre walks through cancelling on both iPhone and Mac, screen by screen.
Watch out for
- Subscribed inside the app? Readdle says the refund is Apple's call and it cannot make one for you.
- There is no refund button: you have to contact Readdle and ask, even inside the window.
- Miss the 24 hours before the billing date and the renewal goes through at the then-current rate.
- Deleting the app does not cancel the subscription, and Readdle warns about that in its terms.
Customer support
Ordinary · checked Oct 18, 2026
A proper knowledge base for Calendars, written article by article with steps for iPhone and Mac, plus a form on Readdle's site that goes to the support team. That is a respectable amount for a calendar app. What's missing is any promise: no hours, no reply time beyond as soon as we can, and the help pages hand you to a chatbot rather than a person. That is where most apps sit, so a C.
Ways to get help
Email
The terms list an email address for general inquiries and a separate one for privacy questions, in the About Us block alongside Readdle's registered company details.
Stated on readdle.comContact form or ticket
A support form on Readdle's website asking for your device, the product, a message and an optional file, which says the support team will get back to you as soon as possible. The Calendars help articles instead point you to a chatbot, opened from the icon at the bottom right of the page.
Stated on readdle.comHelp centre
The Calendars knowledge base, with sections on getting started, tutorials, troubleshooting, billing and subscription, PRO features, and privacy and security. It is public and needs no account.
Stated on support.readdle.com
Not listed on Calendars by Readdle’s pages: live chat, phone.
- When people answer
Its pages do not say.
- How fast it says it replies
Its pages do not say.
- What depends on your plan
Its pages do not say.
In your favour
- The knowledge base is detailed and gives separate steps for iPhone, iPad and Mac.
- Billing has a section of its own, covering subscribing, cancelling, refunds and restoring purchases.
- The support form is open to anyone, free users included, with no sign-in needed.
- Readdle's support page lets you pick the product first, so Calendars questions go to the right place.
Watch out for
- No hours are stated anywhere, and no reply time beyond as soon as we can.
- Help articles send you to a chatbot rather than offering to put you through to a person.
- There is no live chat with an agent and no phone line on any page we read.
- Billing problems with an App Store purchase end up with Apple, not with Readdle.
What these two grades rest on. Read on 18 October 2026: the Calendars terms of service and their sections on payment, subscription renewal and cancellation, refunds and termination; the knowledge-base articles on refund processes, on managing a subscription, on cancelling the free trial and on the free versus full version; the knowledge base's front page and Readdle's support page. Nobody here cancelled a plan or contacted its support. They are graded apart from the five that make the GPA. How we grade refunds and support.
Part 06 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Fantastical, Apple Calendar, BusyCal, Google Calendar and Timepage
The 5 tools Calendars by Readdle is most often weighed against, with where each one differs from it.
- 2.4GPA
Fantastical
Free plan · from $4.75/mo
Calendar and tasks app for Apple devices, Windows and Googlebook.
- Only Fantastical lists a Windows app.
- Calendars by Readdle also covers habit tracking.
- Fantastical also covers templates and booking links.
- 3.2GPA
Apple Calendar
Free
Free built-in calendar for iPhone, iPad, Mac and iCloud.com.
- Only Apple Calendar lists a web app.
- Calendars by Readdle also covers habit tracking.
- 2.4GPA
BusyCal
Free plan · from $49.99 one-time
Customizable calendar and task app for Mac and iPhone.
- BusyCal can be bought with a one-time purchase.
- Calendars by Readdle also covers habit tracking.
- BusyCal also covers menu bar app.
- 3.4GPA
Google Calendar
Free plan · from $7/mo
Online calendar from Google, free with a personal account.
- Only Calendars by Readdle lists a macOS app.
- Only Google Calendar lists a web app.
- Only Google Calendar lists an Android app.
- 2.6GPA
Timepage
Free trial · from $3.99/mo
Calendar app for Apple devices with a timeline and month heatmap.
- Calendars by Readdle has a free plan. Timepage does not, though it has a free trial.
- Calendars by Readdle also covers tasks and habit tracking.
Part 07 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
20
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is Calendars by Readdle free?
Calendars by Readdle has a free plan. a basic calendar with one alert per event.
How much does Calendars by Readdle cost?
Calendars by Readdle lists 3 plans. Free: $0.
What platforms does Calendars by Readdle work on?
Calendars by Readdle is available on macOS and iOS.
Does Calendars by Readdle offer any discounts?
Calendars by Readdle publicly lists the following: Yearly PRO costs less than 12 months of monthly; One-time Lifetime purchase; Educational discount with a school email.
How is Calendars by Readdle rated?
Calendars by Readdle's iPhone and iPad app averages 4.7 out of 5 from 122,005 ratings on the App Store in the United States, as read on Oct 5, 2026.
Does Calendars by Readdle have an Android app?
No Android app was listed when its pages were read on Oct 5, 2026. Calendars by Readdle is listed for macOS and iOS.
Does Calendars by Readdle have a Windows app?
No Windows app was listed when its pages were read on Oct 5, 2026. Calendars by Readdle is listed for macOS and iOS.
Is Calendars by Readdle open source?
Calendars by Readdle is not described as open source on its own site, as read on Oct 5, 2026.
What does Calendars by Readdle integrate with?
Calendars by Readdle's listing names Google Calendar, iCloud, Outlook, Microsoft Exchange, Google Tasks, Apple Reminders, Zoom and Google Meet.
Does Calendars by Readdle have a student discount?
Educational discount with a school email. Readdle's Calendars page lets students and educators verify an educational email address to receive a discount link.
Does Calendars by Readdle have a free trial?
Yes. 7-day free trial of Calendars PRO; the subscription is charged when the trial ends unless canceled.
Who makes Calendars by Readdle?
Calendars by Readdle is made by Readdle Limited.
What are the alternatives to Calendars by Readdle?
The closest alternatives to Calendars by Readdle in our directory are Fantastical, Apple Calendar, BusyCal, Google Calendar and Timepage.
Does Calendars by Readdle give refunds?
The terms say a subscription bought through Readdle's website can be cancelled and refunded within 14 days of purchase for a monthly plan, or 30 days for an annual or lifetime one, with a full refund to the same payment method once you contact Readdle.
How do I cancel Calendars by Readdle?
A subscription bought on Readdle's website, or inside the version of the app downloaded from it, is cancelled in the Stripe Customer Portal, reached from a link in the purchase confirmation email or from the app's settings.
What happens to my data if I cancel Calendars by Readdle?
The terms say cancelling takes effect at the end of the current subscription period, does not close your account, and leaves you with the app's free functions.
How do I contact Calendars by Readdle support?
Calendars by Readdle's pages list these ways to get help: email, contact form or ticket and help centre.
How does Calendars by Readdle compare with other calendar and scheduling apps?
Calendars by Readdle's GPA of 3.0 is higher than 57 of the 74 other calendar and scheduling apps we grade, and level with 8.
Is Calendars by Readdle good value for money?
ToolGPA grades Calendars by Readdle A for value for money. Its paid plans start at $1.67 a month when paid by the year, against a middle price of $6 for the category: 4 of the 52 others that charge start lower.
Could I make my own version of Calendars by Readdle?
The plain part of Calendars by Readdle you could make: calendar, tasks, natural-language input and habit tracking.
Where this guide comes from
The prices, plans, platforms and features were read from Calendars by Readdle’s own pages on Oct 5, 2026, and the grades were given on Oct 10, 2026. Graded from this listing, whose facts were read from Readdle's own pages on 5 October 2026, and its App Store rating. Also tested with a demo account on 2026-08-11.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Readdle Limited. Prices change, so check readdle.com before you buy.
- readdle.com/calendars
- apps.apple.com/us/app/calendars-schedule-planner/id608834326
- support.readdle.com/calendars/billing-subscription/free-vs-full-version-of-the-app
- support.readdle.com/calendars/billing-subscription/how-to-cancel-the-free-trial-for-calendars-pro
- support.readdle.com/calendars/billing-subscription/can-the-app-be-purchased-for-mac-only
- support.readdle.com/calendars/calendars-premium
- support.readdle.com/calendars/calendars-premium/how-to-add-a-default-alert
- support.readdle.com/calendars/calendars-premium/natural-language-input
- readdle.com/calendars/how-to-sync-outlook
- readdle.com/blog/calendars-for-mac
- readdle.com/blog/calendars-lifetime-purchase-option
Part 08 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
3,189
Tools graded, in 94 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
3,189
tools graded
94
categories
426
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- Calendars by Readdle, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/calendars-by-readdle
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "Calendars by Readdle: The Insider's Guide", checked Oct 5, 2026. https://toolgpa.com/tools/calendars-by-readdle
Know someone choosing between calendar and scheduling apps?
Send them this guide: toolgpa.com/tools/calendars-by-readdle/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded calendar and scheduling apps after Calendars by Readdle, each with an Insider's Guide of its own.
- Calendar & Scheduling Insider's GuideEvery one of the 75 calendar and scheduling apps we grade, compared
- Notion Calendar Insider's GuideFree calendar app that connects to Notion databases3.6 GPA
- Google Calendar Insider's GuideOnline calendar from Google, free with a personal account3.4 GPA
- World Time Buddy Insider's GuideVisual time zone converter and world clock for planning calls3.4 GPA
Choosing software? Every tool graded, every price dated.
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