Business Calendar 2 vs One Calendar
We give Business Calendar 2 a 3.0 GPA and One Calendar a 3.8, out of 4.0. Business Calendar 2 grades higher on features. One Calendar grades higher on value for money, ease of use and platforms. They get the same grade on the free plan.
Price, platforms and features side by side. The table says where each price was read and when.
Business Calendar 2
Android calendar and task app with widgets and a Pro upgrade
Free plan · from $1.49
One Calendar
One view of all your calendars on Android, Apple and Windows
Free plan · from $5.99 one-time
How we grade them
| 3.0GPABusiness Calendar 2Very good | 3.8GPAOne CalendarExcellent | |
|---|---|---|
| Value for money | BWe can't tell you what Pro costs, because Appgenix's site doesn't say. Google Play shows in-app purchases from $1.49 to $8.99 per item with no billing period. Cheap at either end, but unclear, so it gets a B and not an A. | APremium is $5.99, paid once. Most paid calendar apps charge about that every month. You do buy it per platform group, so Android, iOS and Windows are separate licenses, and the Microsoft Store page doesn't show its price. |
| Free plan and trial | AFree gets month, week, day, agenda, year and task views, the widgets, up to 5 reminders per event, voice input and Google Tasks sync. It has ads. Most people could stay here and never feel short. | AThe free version has all five views, every supported calendar type, invitations and recurrences. Most people could stop there. It syncs 6 months of past appointments and leaves out search, theming and appointment colours. |
| Features | AA week view that stretches from 1 to 14 days, a year view with a heat map of busy days, seven widgets with over 50 options, and tasks beside events. Pro adds templates, drag and drop, multi-selection, weather and print to PDF. | BIt connects Google, Outlook, Office 365, Exchange, iCloud, Yahoo, Nextcloud and other CalDAV servers, with day, week, month, year and list views, and it works offline. A good plain calendar. But search is Premium, and printing is a Windows-only extra. |
| Ease of use | BThere's no App Store rating to go on, as it isn't on iPhone. It uses the calendars Android already syncs, so there's no new account to set up, and you can speak events in English, German, French or Japanese. | A4.8 from about 21,000 App Store ratings. Connect your accounts and they show up together, with a quick filter to narrow things down by calendar colour. |
| Platforms and integrations | DAndroid only, which does include Chromebooks and Wear OS watches. No iOS, desktop or web app is listed. It reads Google, Outlook, Exchange and CalDAV calendars through the device. | AAndroid, iPhone, iPad, Mac and Windows, connecting to a long list of calendar services, any CalDAV server included. No web or Linux version is listed. |
| Best for | Android users who want more views and widgets | all your calendar accounts in one plain view |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Business Calendar 2 and One Calendar. How we grade
Where they differ
- Business Calendar 2 starts at $1.49 to $8.99 per in-app purchase on Google Play; billing basis not shown. One Calendar starts at $5.99 one-time per platform (App Store or Google Play).
- Only One Calendar lists iOS, macOS and Windows apps.
- One Calendar can be bought with a one-time purchase.
- Business Calendar 2 also covers templates and tasks.
In commonFree planAndroidCalendar
At a glance
| Business Calendar 2 | One Calendar | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $1.49 to $8.99 per in-app purchase on Google Play; billing basis not shown | $5.99 one-time per platform (App Store or Google Play) |
| Free plan | Free version with ads: all six main views, widgets, reminders, birthdays and holidays, voice input and Google Tasks sync. Pro features stay locked. | Free version with all five views, appointment management and every supported calendar type, syncing 6 months of past appointments. Search, theming, appointment colors and widget configuration need Premium. |
| Free trial | None listed | None listed |
| macOS | ||
| Windows | ||
| iOS | ||
| Android | ||
| Made by | Appgenix Software UG | Code Spark |
| Price read from | play.google.com | apps.apple.com |
| Checked | Oct 6, 2026 | Oct 9, 2026 |
Who each one suits
Business Calendar 2
- Android users who want more views and widgets than a stock calendar app
- Keeping events and Google Tasks or Microsoft To Do lists in one app
- People who enter the same kinds of events often and want templates
One Calendar
- People who mix Google, Microsoft, iCloud and CalDAV calendars
- Households or workers split between Android, iPhone and Windows
- Buyers who want a one-time payment and no subscription
Worth knowing
Business Calendar 2
- Android only, including Chromebooks and Wear OS watches; no iOS, desktop or web app is listed.
- Templates, drag and drop, multi-selection, weather, attachments, print to PDF and the 22 app themes need the Pro upgrade.
- Appgenix's site gives no Pro price; Google Play shows in-app purchases of $1.49 to $8.99 per item with no billing period.
- The free version contains ads, according to its Google Play listing.
One Calendar
- A Premium license is needed per platform group: Android, iOS and Windows are each bought separately, because the stores do not allow cross-platform licensing.
- The free version syncs 6 months of past appointments and leaves out search, theming and appointment colors.
- The Microsoft Store page lists the Windows app as free with in-app purchases but does not show the Premium price.
- No web or Linux version is listed. Printing and automatic day rollover are Windows-only Premium features.
Key features
Business Calendar 2
- Six main views
- Month, week, day, agenda, year and tasks views. The week view stretches from 1 to 14 days with a swipe, and the year view marks busy days with a heat map.
- Seven home screen widgets
- Month, week, day, agenda, tasks, icon and Day Pro widgets, with 14 widget themes and more than 50 customization options.
- Tasks next to events
- A dedicated tasks view keeps lists locally or syncs them with Google Tasks. Pro adds priorities, subtasks, repeating tasks and Microsoft To Do sync.
- Calendar sync
- Uses Android's built-in calendar sync for Google and Exchange, and recent versions add Microsoft and CalDAV accounts. Advanced Outlook sync with categories is Pro.
- Templates and voice input
- Events and tasks can be spoken in English, German, French or Japanese. Pro users can save templates that include reminders, repetition rules and attendees.
- Drag and drop and multi-selection
- With Pro, events are moved, copied or deleted by drag and drop, and one action such as move, copy or recolor can be applied to several events at once.
One Calendar
- Many calendar services in one app
- Connects to Google Calendar, Outlook, Office 365, Exchange, iCloud, Yahoo, GMX, Synology, Nextcloud, ownCloud, Mailbox.org and other CalDAV servers, and shows them together.
- Five views with week numbers
- Day, week, month, year and list or agenda views, all with week numbers. A quick filter narrows what is shown by calendar color.
- Appointments and invitations
- Add, change and delete appointments, set up recurrences, invite people to a meeting and accept incoming invitations. Appointments can be shared through apps such as WhatsApp.
- Works offline
- Appointments can be viewed and managed without an internet connection, according to the vendor's feature list.
- Widgets and live tiles
- Several widgets are available depending on the operating system, including live tiles on Windows. Choosing which calendars, birthdays and tasks a widget shows is a Premium feature.
- Theming and colors
- Premium unlocks 170 color options, a background picture, a custom text color and predefined themes, plus a separate color for any single appointment. A dark theme is supported.
Plans
Business Calendar 2
Free$0
Month, week, day, agenda, year and task views, widgets, up to 5 reminders per event, voice input and Google Tasks sync, with ads.
Pro$1.49 - $8.99
per in-app item on Google Play; billing basis not shown
Adds templates, drag and drop, multi-selection, weather, attachments, print to PDF, 22 themes, and subtasks and repeating tasks.
One Calendar
Free$0
Day, week, month, year and list views across all connected calendars, with invitations and recurrences and 6 months of past appointments.
Premium$5.99
one-time payment per platform group (App Store or Google Play)
Appointment colors, theming, search, 3 years of history, widget configuration, immediate sync and navigation. Windows needs its own license.
Ways to pay less
Business Calendar 2
- Other savings
Included with Google Play Pass
The Google Play listing says Play Pass subscribers get the app free of ads and in-app purchases as part of that subscription.
One Calendar
No public discounts listed.
