One Calendar vs Pomodoro Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
One Calendar
Consolidate all your digital calendars into a single, easy-to-read view. Manage appointments, events, and birthdays from various providers like Google, Outlook, iCloud, and more, all within one application.
- Integrates multiple calendar providers
- Easy-to-read overview
- Manage appointments and events
- View birthdays
- Cross-platform availability
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The most popular app to view all your calendars like Google, Live, Outlook, iCloud, Exchange, Office365, Yahoo, Nextcloud, Synology, GMX, Mailbox.org, ownCloud and more. OneCalendar integrates all your calendars into an easy-to-read overview. View and manage all your appointments, events and birthdays. OneCalendar is available on all platforms.
Pomodoro Timer
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Pomodoro Timer is a focus timer built on the Pomodoro technique: you work with full attention for 25 minutes, take a short break, and every four blocks earn a long one. The ring fills as time passes, and its color tells you which mode you are in — red for focus, green for a break. No need to read the number. • Full-screen Focus mode, nothing on screen but the time, with the display kept awake • Daily goal and day streak, so the habit stays visible • Time focused, daily average, and the week in bars • History of the day's sessions • Breaks that start on their own, if you want them to • Your own presets: pick your durations and save them • Five languages: English, Portuguese, Spanish, French and German Everything stays on your device. No account, no email, and nothing sent anywhere.
Screenshots
Verdict
The clearest difference is in-app purchases: Pomodoro Timer at none against One Calendar's 1. One Calendar's advantage is device support (4 vs 2). On price, update cadence, ads and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. One Calendar sells 1 one-off in-app purchase. Pomodoro Timer asks for nothing beyond the download.
One Calendar ships an update fortnightly, Pomodoro Timer every 2 weeks. The most recent releases landed on October 26, 2026 and October 13, 2026 respectively.
| Parameter | One Calendar | Pomodoro Timer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (21K ratings) — better | — |
| Positive reviews | 80.7% of reviews | — |
| Number of ratings | 21K — better | — |
| Update frequency | Fortnightly — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 89 MB | 34 MB |
| Age rating | 12+ | 4+ |
| Developer | Code Spark | Givailson Neves |
Bugs and requests
One Calendar
Reported bugs
5 issues- Sync errors
- Unresponsive buttons
- Incorrect time zone display
- Duplicate events
- Inability to delete future occurrences of recurring events
Requested features
6 requests- Multiple reminders for events
- Ability to edit recurring events
- Option to change event calendar after creation
- Printing support
- More customization options
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- Widgets for better visibility
Pomodoro Timer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
One Calendar
- OneCalendar premium$5.99
Pomodoro Timer
No in-app purchases
Questions
Is One Calendar free?
Is Pomodoro Timer free?
Do One Calendar or Pomodoro Timer have ads?
Which is updated more often, One Calendar or Pomodoro Timer?
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