Best OneCalendar Alternatives in 2026
Updated
20 tools from calendar apps ranked against OneCalendar on the same published basis.
- 1OneCalendar vs Lark
- 2OneCalendar vs Calendar.com
- 3OneCalendar vs Microsoft Outlook Calendar
- 4OneCalendar vs TimeFinder
- 5OneCalendar vs Teamup
- 6OneCalendar vs Cozi
- 7OneCalendar vs TimeTree
- 8OneCalendar vs Tweek
- 9OneCalendar vs FlowSavvy
- 10OneCalendar vs Proton Calendar
- 11OneCalendar vs Reclaim AI
- 12OneCalendar vs Calendars by Readdle
- 13OneCalendar vs Amie
- 14OneCalendar vs Trevor AI
- 15OneCalendar vs EGroupware
- 16OneCalendar vs FamilyWall
- 17OneCalendar vs Google Calendar
- 18OneCalendar vs Fantastical
- 19OneCalendar vs Rise Calendar
- 20OneCalendar vs BlueMind
OneCalendar alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Lark | 9.2 | Free plan | — | Android, API, iOS, Linux, Mac, Web, Windows |
| 2 | Calendar.com | 9.1 | Free plan | $20/mo | Android, API, Browser, iOS, Web |
| 3 | Microsoft Outlook Calendar | 9.0 | Free plan | $1.67/mo | Android, iOS, Mac, Web |
| 4 | TimeFinder | 9.0 | Free plan | Free | Android, iOS, Mac, Web, Windows |
| 5 | Teamup | 8.9 | Free plan | $12/mo | Android, API, iOS, Web |
| 6 | Cozi | 8.9 | Free plan | $3.25/mo | Android, iOS, Web |
| 7 | TimeTree | 8.9 | Free plan | $3.75/mo | Android, iOS, Web |
| 8 | Tweek | 8.8 | Free plan | $4.17/mo | Android, iOS, Mac, Web |
| 9 | FlowSavvy | 8.7 | Free plan | — | Android, iOS, Web |
| 10 | Proton Calendar | 8.6 | Free plan | Free | Android, iOS |
| 11 | Reclaim AI | 8.6 | Free plan | $10/mo | Browser, Web |
| 12 | Calendars by Readdle | 8.6 | Free plan | $1.67/mo | iOS, Mac |
| 13 | Amie | 8.6 | Free plan | Free | iOS, Mac, Windows |
| 14 | Trevor AI | 8.4 | Free plan | $0.42/mo | Web |
| 15 | EGroupware | 8.4 | No | €21.90/mo | Web, Linux, Windows, Mac |
| 16 | FamilyWall | 8.4 | Free plan | $3.75/mo | Android, iOS, Web |
| 17 | Google Calendar | 8.3 | No | $7/mo | Android, iOS |
| 18 | Fantastical | 8.3 | Free plan | Free | iOS, Mac, Windows |
| 19 | Rise Calendar | 8.3 | Free plan | €10/mo | Android, iOS, Mac, Windows |
| 20 | BlueMind | 8.3 | Free plan | Free | Android, iOS, Linux, Mac, self-hosted, Web, Windows |
Make your tool an alternative to OneCalendar
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about OneCalendar alternatives
What is the best alternative to OneCalendar?
Lark, number 1 in calendar apps with a score of 9.2 out of 10. The others here: Calendar.com, Microsoft Outlook Calendar, TimeFinder and 16 more.
What is the best free alternative to OneCalendar?
Lark is the best-ranked alternative with a free plan. 18 of the 20 alternatives here publish a free plan on their own pricing pages.
Is there an open-source alternative to OneCalendar?
Yes: EGroupware.
How are these alternatives ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.