Specifiction
For vendors
AdvertiseTop spots, featured rows, home sponsor Get listedAdd a product we don't cover yet Claim a listingFree: verify the domain, then correct your page Vendor dashboardNumbers, orders and placements
List your tool
Vendor dashboard

Best OneCal Alternatives in 2026

Updated

20 tools from calendar apps ranked against OneCal on the same published basis.

  1. 1
    Lark Free plan AndroidapiiOSLinuxMac 9.2
    OneCal vs Lark
  2. 2
    Calendar.com Free plan AndroidapiextensioniOSWeb $20/mo9.1
    OneCal vs Calendar.com
  3. 3
    Microsoft Outlook Calendar Free plan AndroidiOSMacWeb $1.67/mo9.0
    OneCal vs Microsoft Outlook Calendar
  4. 4
    TimeFinder Free plan AndroidiOSMacWebWin Free9.0
    OneCal vs TimeFinder
  5. 5
    Teamup Free plan AndroidapiiOSWeb $12/mo8.9
    OneCal vs Teamup
  6. 6
    Cozi Free plan AndroidiOSWeb $3.25/mo8.9
    OneCal vs Cozi
  7. 7
    TimeTree Free plan AndroidiOSWeb $3.75/mo8.9
    OneCal vs TimeTree
  8. 8
    Tweek Free plan AndroidiOSMacWeb $4.17/mo8.8
    OneCal vs Tweek
  9. 9
    FlowSavvy Free plan AndroidiOSWeb 8.7
    OneCal vs FlowSavvy
  10. 10
    Proton Calendar Free plan AndroidiOS Free8.6
    OneCal vs Proton Calendar
  11. 11
    Reclaim AI Free plan extensionWeb $10/mo8.6
    OneCal vs Reclaim AI
  12. 12
    Calendars by Readdle Free plan iOSMac $1.67/mo8.6
    OneCal vs Calendars by Readdle
  13. 13
    Amie Free plan iOSMacWin Free8.6
    OneCal vs Amie
  14. 14
    Trevor AI Free plan Web $0.42/mo8.4
    OneCal vs Trevor AI
  15. 15
    EGroupware Free trial Open sourceWebLinuxWinMac €21.90/mo8.4
    OneCal vs EGroupware
  16. 16
    FamilyWall Free plan AndroidiOSWeb $3.75/mo8.4
    OneCal vs FamilyWall
  17. 17
    Google Calendar AndroidiOS $7/mo8.3
    OneCal vs Google Calendar
  18. 18
    Fantastical Free plan iOS Free8.3
    OneCal vs Fantastical
  19. 19
    Rise Calendar Free plan AndroidiOSMacWin €10/mo8.3
    OneCal vs Rise Calendar
  20. 20
    BlueMind Free plan AndroidiOSLinuxMacself-hosted Free8.3
    OneCal vs BlueMind

OneCal alternatives compared

#ToolScoreFree planFromRuns on
1Lark9.2Free plan—Android, API, iOS, Linux, Mac, Web, Windows
2Calendar.com9.1Free plan$20/moAndroid, API, Browser, iOS, Web
3Microsoft Outlook Calendar9.0Free plan$1.67/moAndroid, iOS, Mac, Web
4TimeFinder9.0Free planFreeAndroid, iOS, Mac, Web, Windows
5Teamup8.9Free plan$12/moAndroid, API, iOS, Web
6Cozi8.9Free plan$3.25/moAndroid, iOS, Web
7TimeTree8.9Free plan$3.75/moAndroid, iOS, Web
8Tweek8.8Free plan$4.17/moAndroid, iOS, Mac, Web
9FlowSavvy8.7Free plan—Android, iOS, Web
10Proton Calendar8.6Free planFreeAndroid, iOS
11Reclaim AI8.6Free plan$10/moBrowser, Web
12Calendars by Readdle8.6Free plan$1.67/moiOS, Mac
13Amie8.6Free planFreeiOS, Mac, Windows
14Trevor AI8.4Free plan$0.42/moWeb
15EGroupware8.4No€21.90/moWeb, Linux, Windows, Mac
16FamilyWall8.4Free plan$3.75/moAndroid, iOS, Web
17Google Calendar8.3No$7/moAndroid, iOS
18Fantastical8.3Free planFreeiOS
19Rise Calendar8.3Free plan€10/moAndroid, iOS, Mac, Windows
20BlueMind8.3Free planFreeAndroid, iOS, Linux, Mac, self-hosted, Web, Windows
Make your tool an alternative to OneCal

The sponsored alternative slot on this page is labelled Sponsored.

See the price

Questions about OneCal alternatives

What is the best alternative to OneCal?

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 OneCal?

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 OneCal?

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.