Best Simple Calendar Alternatives in 2026
Updated
20 apps from calendar apps ranked against Simple Calendar on the same published basis.
- 1Simple Calendar vs Mozilla Thunderbird
- 2Simple Calendar vs Microsoft Outlook Calendar
- 3Simple Calendar vs Lark
- 4Simple Calendar vs EGroupware
- 5Simple Calendar vs Proton Calendar
- 6Simple Calendar vs Teamup
- 7Simple Calendar vs Cozi
- 8Simple Calendar vs Calendar.com
- 9Simple Calendar vs TimeFinder
- 10Simple Calendar vs Notion Calendar
- 11Simple Calendar vs TimeTree
- 12Simple Calendar vs Fantastical
- 13Simple Calendar vs Doodle
- 14Simple Calendar vs Tuta Calendar
- 15Simple Calendar vs Reclaim AI
- 16Simple Calendar vs FlowSavvy
- 17Simple Calendar vs Musubi
- 18Simple Calendar vs Samsung Calendar
- 19Simple Calendar vs Trevor AI
- 20Simple Calendar vs Calendars by Readdle
Simple Calendar alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Mozilla Thunderbird | 9.0 | Free plan | Free | Android, Linux, Mac, Windows |
| 2 | Microsoft Outlook Calendar | 8.2 | Free plan | $1.67/mo | Android, iOS, Mac, Web |
| 3 | Lark | 8.2 | Free plan | Android, API, iOS, Linux, Mac, Web, Windows | |
| 4 | EGroupware | 8.2 | €21.90/mo | Web, Linux, Windows, Mac | |
| 5 | Proton Calendar | 8.0 | Free plan | Free | Android, iOS |
| 6 | Teamup | 8.0 | Free plan | $12/mo | Android, API, iOS, Web |
| 7 | Cozi | 8.0 | Free plan | $3.25/mo | Android, iOS, Web |
| 8 | Calendar.com | 8.0 | Free plan | $20/mo | Android, API, Browser, iOS, Web |
| 9 | TimeFinder | 8.0 | Free plan | Free | Android, iOS, Mac, Web, Windows |
| 10 | Notion Calendar | 7.9 | Free plan | Free | Android, iOS |
| 11 | TimeTree | 7.9 | Free plan | $3.75/mo | Android, iOS, Web |
| 12 | Fantastical | 7.9 | Free plan | Free | iOS, Mac, Windows |
| 13 | Doodle | 7.8 | Free plan | $11/mo | Web |
| 14 | Tuta Calendar | 7.8 | Free plan | €3/mo | Android, iOS |
| 15 | Reclaim AI | 7.8 | Free plan | $10/mo | Browser, Web |
| 16 | FlowSavvy | 7.8 | Free plan | Android, iOS, Web | |
| 17 | Musubi | 7.8 | Free plan | Free | Android, iOS, self-hosted, Web |
| 18 | Samsung Calendar | 7.7 | Free plan | Free | Android |
| 19 | Trevor AI | 7.7 | Free plan | $0.42/mo | Web |
| 20 | Calendars by Readdle | 7.7 | Free plan | $1.67/mo | iOS, Mac |
Make your app an alternative to Simple Calendar
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about Simple Calendar alternatives
What is the best alternative to Simple Calendar?
Mozilla Thunderbird, number 1 in calendar apps with a score of 9.0 out of 10. The others here: Microsoft Outlook Calendar, Lark, EGroupware and 16 more.
What is the best free alternative to Simple Calendar?
Mozilla Thunderbird 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 Simple Calendar?
Yes: Mozilla Thunderbird, EGroupware.
How are these alternatives ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.