Best CalUnity Alternatives in 2026
Updated
20 platforms from calendar apps ranked against CalUnity on the same published basis.
- 1CalUnity vs Lark
- 2CalUnity vs Calendar.com
- 3CalUnity vs Teamup
- 4CalUnity vs 7shifts
- 5CalUnity vs Slotly
- 6CalUnity vs Mozilla Thunderbird
- 7CalUnity vs Microsoft Outlook Calendar
- 8CalUnity vs Proton Calendar
- 9CalUnity vs Reclaim AI
- 10CalUnity vs EGroupware
- 11CalUnity vs Rallly
- 12CalUnity vs Notion Calendar
- 13CalUnity vs Doodle
- 14CalUnity vs Cozi
- 15CalUnity vs TimeTree
- 16CalUnity vs Google Calendar
- 17CalUnity vs Tuta Calendar
- 18CalUnity vs Fantastical
- 19CalUnity vs FlowSavvy
- 20CalUnity vs Trevor AI
CalUnity alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Lark | 8.8 | Free plan | — | Android, API, iOS, Linux, Mac, Web, Windows |
| 2 | Calendar.com | 8.8 | Free plan | $20/mo | Android, API, Browser, iOS, Web |
| 3 | Teamup | 8.7 | Free plan | $12/mo | Android, API, iOS, Web |
| 4 | 7shifts | 8.1 | Free plan | Free | Android, API, iOS, Web |
| 5 | Slotly | 7.9 | Free plan | $0.83/mo | Android, API, Web |
| 6 | Mozilla Thunderbird | 7.6 | Free plan | Free | Android, Linux, Mac, Windows |
| 7 | Microsoft Outlook Calendar | 7.5 | Free plan | $1.67/mo | Android, iOS, Mac, Web |
| 8 | Proton Calendar | 7.4 | Free plan | Free | Android, iOS |
| 9 | Reclaim AI | 7.4 | Free plan | $10/mo | Browser, Web |
| 10 | EGroupware | 7.4 | No | €21.90/mo | Web, Linux, Windows, Mac |
| 11 | Rallly | 7.4 | Free plan | $0.50/mo | API, self-hosted, Web |
| 12 | Notion Calendar | 7.3 | Free plan | Free | Android, iOS |
| 13 | Doodle | 7.3 | Free plan | $11/mo | Web |
| 14 | Cozi | 7.3 | Free plan | $3.25/mo | Android, iOS, Web |
| 15 | TimeTree | 7.3 | Free plan | $3.75/mo | Android, iOS, Web |
| 16 | Google Calendar | 7.2 | No | $7/mo | Android, iOS |
| 17 | Tuta Calendar | 7.2 | Free plan | €3/mo | Android, iOS |
| 18 | Fantastical | 7.2 | Free plan | Free | iOS |
| 19 | FlowSavvy | 7.2 | Free plan | — | Android, iOS, Web |
| 20 | Trevor AI | 7.2 | Free plan | $0.42/mo | Web |
Make your platform an alternative to CalUnity
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about CalUnity alternatives
What is the best alternative to CalUnity?
Lark, number 1 in calendar apps with a score of 8.8 out of 10. The others here: Calendar.com, Teamup, 7shifts and 16 more.
What is the best free alternative to CalUnity?
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 CalUnity?
Yes: Mozilla Thunderbird, EGroupware.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.