Best Calendar.online Alternatives in 2026
Updated
20 apps from calendar apps ranked against Calendar.online on the same published basis.
- 1Calendar.online vs Lark
- 2Calendar.online vs Microsoft Outlook Calendar
- 3Calendar.online vs Calendar.com
- 4Calendar.online vs Proton Calendar
- 5Calendar.online vs Teamup
- 6Calendar.online vs Cozi
- 7Calendar.online vs TimeTree
- 8Calendar.online vs Notion Calendar
- 9Calendar.online vs Reclaim AI
- 10Calendar.online vs FlowSavvy
- 11Calendar.online vs Google Calendar
- 12Calendar.online vs Tuta Calendar
- 13Calendar.online vs TimeFinder
- 14Calendar.online vs Doodle
- 15Calendar.online vs Rise Calendar
- 16Calendar.online vs Fantastical
- 17Calendar.online vs Trevor AI
- 18Calendar.online vs Mozilla Thunderbird
- 19Calendar.online vs Samsung Calendar
- 20Calendar.online vs Vyte
Calendar.online alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Lark | 9.5 | Free plan | — | Android, API, iOS, Linux, Mac, Web, Windows |
| 2 | Microsoft Outlook Calendar | 9.4 | Free plan | $1.67/mo | Android, iOS, Mac, Web |
| 3 | Calendar.com | 9.1 | Free plan | $20/mo | Android, API, Browser, iOS, Web |
| 4 | Proton Calendar | 9.0 | Free plan | Free | Android, iOS |
| 5 | Teamup | 9.0 | Free plan | $12/mo | Android, API, iOS, Web |
| 6 | Cozi | 9.0 | Free plan | $3.25/mo | Android, iOS, Web |
| 7 | TimeTree | 9.0 | Free plan | $3.75/mo | Android, iOS, Web |
| 8 | Notion Calendar | 8.8 | Free plan | Free | Android, iOS |
| 9 | Reclaim AI | 8.8 | Free plan | $10/mo | Browser, Web |
| 10 | FlowSavvy | 8.8 | Free plan | — | Android, iOS, Web |
| 11 | Google Calendar | 8.7 | No | $7/mo | Android, iOS |
| 12 | Tuta Calendar | 8.7 | Free plan | €3/mo | Android, iOS |
| 13 | TimeFinder | 8.7 | Free plan | Free | Android, iOS, Mac, Web, Windows |
| 14 | Doodle | 8.6 | Free plan | $11/mo | Web |
| 15 | Rise Calendar | 8.6 | Free plan | €10/mo | Android, iOS, Mac, Windows |
| 16 | Fantastical | 8.5 | Free plan | Free | iOS |
| 17 | Trevor AI | 8.5 | Free plan | $0.42/mo | Web |
| 18 | Mozilla Thunderbird | 8.5 | Free plan | Free | Android, Linux, Mac, Windows |
| 19 | Samsung Calendar | 8.4 | Free plan | Free | Android |
| 20 | Vyte | 8.4 | Free plan | $8/mo | Web, iOS |
Make your app an alternative to Calendar.online
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about Calendar.online alternatives
What is the best alternative to Calendar.online?
Lark, number 1 in calendar apps with a score of 9.5 out of 10. The others here: Microsoft Outlook Calendar, Calendar.com, Proton Calendar and 16 more.
What is the best free alternative to Calendar.online?
Lark is the best-ranked alternative with a free plan. 19 of the 20 alternatives here publish a free plan on their own pricing pages.
Is there an open-source alternative to Calendar.online?
Yes: Mozilla Thunderbird.
How are these alternatives ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on.