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The Rainlendar Insider’s Guide

Everything we know about Rainlendar 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.

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ToolGPAOctober 2026

Rainlendar

The Insider’s Guide

Skinnable desktop calendar for Windows, Mac and Linux

Every plan, grade, refund rule and rival among calendar and scheduling apps, read from Rainlendar’s own pages.

Made by Rainy · checked Oct 9, 2026 · toolgpa.com

2.6GPA

Contents

  1. 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
  2. 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
  3. 03What it doesIts main features, where it runs, what it works with and who makes it
  4. 04Where it standsIts grades against its category, and whether to keep it or make your own
  5. 05The alternativesThe tools it is most often weighed against, side by side
  6. 06Quick answersThe questions people ask about it, each answered in a line or two
  7. 07About ToolGPAWho made this guide, what else is on the site, and how to cite it

ToolGPA put this guide together from Rainlendar’s own pages, its app-store listings and our grades. Every fact in it is on Rainlendar’s page too, where it is kept up to date. Checked Oct 9, 2026.

Part 01 · Overview

Welcome

What it is, who it suits, its grades and the ten things to know first

2.6

GPA, above 30 of the 74 other calendar and scheduling apps we grade

Rainlendar is a desktop calendar for Windows, Mac and Linux that keeps events and tasks in small windows on the desktop. Data is stored locally in the standard iCalendar format, the appearance is changed with skins, and Lua scripts can extend what the windows do. The Lite version is free; a one-time Pro license adds sync with Google Calendar, Outlook, CalDAV and other services, plus CSV import and export.

To get you started, here are 9 things to know about Rainlendar, taken from its own pages and our grades.

No rating on record, but nothing needs setting up: install it and your calendar is on the desktop, your data in a plain local .ics file.
From our grade for ease of use
  1. 1

    Best for a calendar that sits on your computer's desktop

    Rainlendar keeps your events and tasks in small windows on the desktop of a Windows, Mac or Linux computer.

  2. 2

    What it costs

    Paid plans start at €9.95 one-time for a lifetime Rainlendar Pro license.

  3. 3

    There is a free plan

    Rainlendar Lite is free to download and use: events, tasks, alarms, skins and iCalendar import and export. Sync with third-party calendar services and CSV import and export need Pro.

  4. 4

    It runs on 3 platforms

    Windows, macOS and Linux.

  5. 5

    Events and tasks on the desktop

    Events and tasks are kept in separate lists that sit on the desktop, and both can also be shown in the calendar window. Several windows can be shown at once, such as the current and the upcoming month.

  6. 6

    Alarms with snooze

    An alarm can fire ahead of an event or task and be snoozed for later. A single event or task can carry more than one alarm.

  7. 7

    Skins and Lua scripting

    Skins change how the windows look and can be mixed together, categories change how individual events appear, and Lua scripts can alter how a skin behaves or fetch content from the internet.

  8. 8

    A 2.6 GPA, above 30 of 74

    That is against the other calendar and scheduling apps we grade, on value, the free plan, features, ease of use and platforms.

  9. 9

    Keep it

    The plain part of Rainlendar you could make: calendar and tasks. What surrounds it you could not. The 4 things listed below take a company, not a weekend.

Rainlendar at a glance

Pricing
Free plan, from €9.95 one-time for a lifetime Rainlendar Pro license
Free plan
Yes
Free trial
Rainlendar Pro can be downloaded and evaluated free; the site states no time limit
Runs on
macOS, Windows, Linux
Made by
Rainy
Category
Calendar & Scheduling
Our grade
2.6 GPA, good

The report card

Best for a calendar that sits on your computer's desktop

Rainlendar keeps your events and tasks in small windows on the desktop of a Windows, Mac or Linux computer. Lite is free and Pro is €9.95 once. But there's no phone or web version at all, sync with Google, Outlook.com or CalDAV is Pro only, Outlook support is Windows only, and calendars from different sources are never merged into one.

ToolGPA report cardRainlendarGraded Oct 10, 2026
SubjectGradeComment
Value for moneyAPro is €9.95 once, a lifetime licence with free upgrades covering one person on several computers. Less than two months of this category's $6 middle, paid one time. It's sold in euros, with no US dollar price shown.
Free plan and trialCLite is free for good, with events, tasks, alarms, skins, printing and iCalendar import and export. The wall arrives fast, though: syncing Google Calendar, Outlook.com or CalDAV is Pro only, and that's where most people's events already live.
FeaturesCThe basics for a desktop calendar: events and tasks with snoozable alarms, a Quick Add line that understands repeats, skins, Lua scripts, daily backups, printing to PDF. The listing shows the limits too. It won't merge calendars from different sources, and Outlook support is Windows only.
Ease of useBNo rating on record, but nothing needs setting up: install it and your calendar is on the desktop, your data in a plain local .ics file. Skins and scripts are there to tinker with, not to learn.
Platforms and integrationsCComputers only: Windows, Mac and Linux, with the same data, skins and scripts on all three. No phone app and no web version, and the site's own answer is to sync Pro and your phone through Google Calendar.
Grade point averageGood, out of 4.02.6

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 Rainlendar is for

  • Fits if you want upcoming events and tasks always showing on your computer's desktop
  • Works for people who'd rather pay €9.95 once than subscribe to a calendar

Who it is not for

  • Skip it if you want your calendar on your phone, because there's no mobile or web version
  • Tight if you're staying on Lite and your events live in Google Calendar or Outlook.com, since sync is Pro only
  • Not for you if you want every calendar merged into one, as each source stays separate
  • Watch out: Outlook support is Windows only, and Pro is priced in euros with no US dollar figure shown

Good to know

Good for

  • People who want upcoming events and tasks always visible on the desktop
  • Households or offices that mix Windows, Mac and Linux computers
  • Users who like to restyle an app with skins and scripts
  • Buyers who prefer a small one-time payment to a subscription

Worth knowing

  • No mobile or web version. The site suggests syncing both Rainlendar Pro and a phone with Google Calendar instead.
  • Sync with Google, Outlook.com, CalDAV and the other online services is limited to Pro, and Outlook support is Windows only.
  • The Pro license is sold in euros, at 9.95 EUR; the purchase page shows no US dollar price.
  • Rainlendar does not merge calendars from different sources; each stays a separate calendar shown in the same window.

Part 02 · Pricing

What it costs

Every plan, the free plan, ways to pay less and how prices have moved

€9.95 one-time

To start. There is a free plan too

Rainlendar has a free plan. Paid plans start at €9.95 one-time for a lifetime Rainlendar Pro license.

It's sold in euros, with no US dollar price shown.
From our grade for value for money

  • Rainlendar Lite

    €0

    Events, tasks, alarms, skins, printing and iCalendar import and export, with data kept in local files.

  • Rainlendar Pro

    €9.95

    one-time purchase, lifetime license per user

    Adds sync with Google Calendar and Tasks, Office 365 / Outlook.com, CalDAV, Remember The Milk, Toodledo and Outlook on Windows, plus CSV import and export.

The free plan

Rainlendar Lite is free to download and use: events, tasks, alarms, skins and iCalendar import and export. Sync with third-party calendar services and CSV import and export need Pro.

Trying it first

Rainlendar Pro can be downloaded and evaluated free; the site states no time limit

Read from rainlendar.net on Oct 9, 2026.

Ways to pay less

  • Lifetime license

    Lifetime Pro license with free upgrades

    The purchase page describes Pro as a single purchase of a lifetime license. The homepage says existing license holders upgrade for free, and the FAQ says one license covers one user on several computers.

    Stated on rainlendar.net

Part 03 · Features

What it does

Its main features, where it runs, what it works with and who makes it

3

Places it runs: macOS, Windows and Linux

Skinnable desktop calendar for Windows, Mac and Linux. Here is what it does, as its own site describes it, and what it covers: works offline, local-first, one-time purchase, tasks, calendar.

It won't merge calendars from different sources, and Outlook support is Windows only.
From our grade for features
Events and tasks on the desktop
Events and tasks are kept in separate lists that sit on the desktop, and both can also be shown in the calendar window. Several windows can be shown at once, such as the current and the upcoming month.
Alarms with snooze
An alarm can fire ahead of an event or task and be snoozed for later. A single event or task can carry more than one alarm.
Skins and Lua scripting
Skins change how the windows look and can be mixed together, categories change how individual events appear, and Lua scripts can alter how a skin behaves or fetch content from the internet.
Standard iCalendar storage
Events and tasks are saved in the iCalendar format (RFC 2445), by default in a local .ics file, and can be exported or imported as .ics. Settings and events are backed up automatically every day.
Sync with online calendars (Pro)
Pro connects to Google Calendar and Tasks, Office 365 / Outlook.com, CalDAV servers, network shared calendars, Remember The Milk and Toodledo, and to Microsoft Outlook on Windows.
Quick Add and printing
A Quick Add widget creates an event or task from one line of text, including a recurrence pattern and a category. Events and tasks can be printed as a list or a calendar layout, or written to a PDF.

Where it runs

  • macOS
  • Windows
  • Linux

What it works with

  • Google Calendar
  • Google Tasks
  • Outlook.com
  • Microsoft Outlook
  • Remember The Milk
  • Toodledo

Rainlendar is made by Rainy.

Part 04 · Standing

Where it stands

Its grades against its category, and whether to keep it or make your own

30/74

Other calendar and scheduling apps it is graded above

Rainlendar's GPA of 2.6 is higher than 30 of the 74 other calendar and scheduling apps we grade, and level with 13.

It stands best on value for money (A, above 45 of 74) and worst on free plan and trial (C, above 3).

Each grade against the category

Every bar is all 75 calendar and scheduling apps we grade, cut by the letter each got. Rainlendar’s own letter is outlined.

  • AValue for moneyAbove 45 of 74
  • CFree plan and trialAbove 3 of 74
  • CFeaturesAbove 3 of 74
  • BEase of useAbove 32 of 74
  • CPlatforms and integrationsAbove 10 of 74

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 Rainlendar you could make: calendar and tasks. What surrounds it you could not. The 4 things listed below take a company, not a weekend.

It costs $11.15, paid once.

What you could make

  • Calendar and tasks: an app builder makes these well.

What you could not

  • Apps for macOS, Windows and Linux that stay in step with each other.
  • It is priced for each person, which means accounts and billing for a team.
  • It plugs into other products, Google Calendar, Google Tasks and Outlook.com among them.
  • Hooks into the device itself: widgets.

What this rests on. Rainlendar’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 · Alternatives

The alternatives

The tools it is most often weighed against, side by side

GNOME Calendar, Merkuro Calendar, CalenGoo, One Calendar and Google Calendar

The 5 tools Rainlendar is most often weighed against, with where each one differs from it.

  • 2.8GPA

    GNOME Calendar

    Free

    Free, open-source calendar app for the GNOME desktop on Linux.

    • Only Rainlendar lists Windows and macOS apps.
    • Rainlendar can be bought with a one-time purchase.
    • GNOME Calendar is open source, according to its own site.
    Rainlendar and GNOME Calendar compared in full
  • 2.6GPA

    Merkuro Calendar

    Free

    Open-source calendar and task app from KDE for Linux.

    • Only Rainlendar lists Windows and macOS apps.
    • Rainlendar can be bought with a one-time purchase.
    • Merkuro Calendar is open source, according to its own site.
    Rainlendar and Merkuro Calendar compared in full
  • 2.8GPA

    CalenGoo

    Free trial · from $5.99 one-time

    Highly configurable calendar and task app sold as a one-time purchase.

    • Rainlendar has a free plan. CalenGoo does not, though it has a free trial.
    • Only CalenGoo lists iOS and Android apps.
    • CalenGoo also covers templates and natural-language input.
    Rainlendar and CalenGoo compared in full
  • 3.2GPA

    One Calendar

    Free plan · from $5.99 one-time

    One view of all your calendars on Android, Apple and Windows.

    • Only Rainlendar lists a Linux app.
    • Only One Calendar lists Android and iOS apps.
    • Rainlendar also covers tasks.
    Rainlendar and One Calendar compared in full
  • 3.4GPA

    Google Calendar

    Free plan · from $7/mo

    Online calendar from Google, free with a personal account.

    • Only Rainlendar lists Windows, macOS and Linux apps.
    • Only Google Calendar lists a web app.
    • Only Google Calendar lists iOS and Android apps.
    Rainlendar and Google Calendar compared in full

Part 06 · Questions

Quick answers

The questions people ask about it, each answered in a line or two

14

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 Rainlendar free?

Rainlendar has a free plan. Rainlendar Lite is free to download and use: events, tasks, alarms, skins and iCalendar import and export.

How much does Rainlendar cost?

Rainlendar lists 2 plans. Rainlendar Lite: €0.

What platforms does Rainlendar work on?

Rainlendar is available on Windows, macOS and Linux.

Does Rainlendar offer any discounts?

Rainlendar publicly lists the following: Lifetime Pro license with free upgrades.

Does Rainlendar have an Android app?

No Android app was listed when its pages were read on Oct 9, 2026. Rainlendar is listed for Windows, macOS and Linux.

Does Rainlendar have an iPhone app?

No iPhone app was listed when its pages were read on Oct 9, 2026. Rainlendar is listed for Windows, macOS and Linux.

Is Rainlendar open source?

Rainlendar is not described as open source on its own site, as read on Oct 9, 2026.

Does Rainlendar work offline?

Yes, according to its own site. What works without a connection differs by plan and platform, so check the vendor's page for the detail.

What does Rainlendar integrate with?

Rainlendar's listing names Google Calendar, Google Tasks, Outlook.com, Microsoft Outlook, Remember The Milk and Toodledo.

Does Rainlendar have a free trial?

Yes. Rainlendar Pro can be downloaded and evaluated free; the site states no time limit.

Who makes Rainlendar?

Rainlendar is made by Rainy.

What are the alternatives to Rainlendar?

The closest alternatives to Rainlendar in our directory are GNOME Calendar, Merkuro Calendar, CalenGoo, One Calendar and Google Calendar.

How does Rainlendar compare with other calendar and scheduling apps?

Rainlendar's GPA of 2.6 is higher than 30 of the 74 other calendar and scheduling apps we grade, and level with 13.

Could I make my own version of Rainlendar?

The plain part of Rainlendar you could make: calendar and tasks. What surrounds it you could not.

Where this guide comes from

The prices, plans, platforms and features were read from Rainlendar’s own pages on Oct 9, 2026, and the grades were given on Oct 10, 2026. Graded from this listing, whose facts were read from Rainlendar's own pages on 9 October 2026. Also tested with a demo account on 2026-06-12.

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 Rainy. Prices change, so check rainlendar.net before you buy.

Part 07 · 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

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, "Rainlendar: The Insider's Guide", checked Oct 9, 2026. https://toolgpa.com/tools/rainlendar

Know someone choosing between calendar and scheduling apps?

Send them this guide: toolgpa.com/tools/rainlendar/guide

ToolGPA elsewhere: youtube.com/@toolgpa

See our other guides

The best-graded calendar and scheduling apps after Rainlendar, each with an Insider's Guide of its own.

ToolGPA

Choosing software? Every tool graded, every price dated.

Compare tools at toolgpa.com ›

Everything in this guide is ToolGPA’s own summary of what Rainlendar’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Rainlendar is a trademark of its owner, and this guide is not made, paid for or approved by Rainy. Prices and plans change: check rainlendar.net before you buy.