Life & fun · alternatives · 2026

24 alternatives to Period-Calculator.com

Privacy-first period calendar with smart predictions 📅

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Period-Calculator.com launched in 2020; newer entries below may have overtaken it.

1. 1IM
   I made a privacy friendly and simple app to track my menstruation▲732

   Hey HN, after the app I actually used to track my period wanted me to log in and save my data in the cloud, I decided to write my own. Most apps in this area are based on a subscription model and display far too much information anyway. For me, a simple calendar is enough where I can add a few notes if necessary. So that is the result of my work - a simple design and the data is only saved on the smartphone.

   2024 · play.google.com · its alternatives →

2. 2
   LadyLog - A period tracker▲89

   Easy to use period tracking app that respects your privacy

   2024 · its alternatives →

3. 3
   My Period AI: Cycle Tracker▲5

   AI-powered period tracking for real cycles

   Jun 2026 · myperiodai.com · its alternatives →

4. 4
   hera▲187

   track your period safely

   Nov 2025 · apps.apple.com · its alternatives →

5. 5
   Period Tracker▲6

   Track your menstrual cycle

   2025 · menstrual-tracker-xi.vercel.app · its alternatives →

6. 6
   Lotus▲92

   A calendar to help women’s track their menstrual cycle

   2017 · its alternatives →

7. 7
   Period Tracker▲13

   Track your cycle, ovulation & PMS with ease

   2025 · play.google.com · its alternatives →

8. 8
   Cycle Muse Tracker▲5

   #reproductivehealth

   2025 · cycle-muse-tracker-fitness.lovable.app · its alternatives →

9. 9
   Simpluna▲68

   Minimalistic period tracker for women

   2021 · its alternatives →

10. 10
    Ovuli▲92

    Ovulation calculator in your terminal

    2020 · its alternatives →

11. 11
    Estri Health▲3

    Track your menstrual and ovulation cycles with smart AI

    Jan 2026 · periodstracker.com · its alternatives →

12. 12
    Clue▲92

    Period and ovulation tracker app for iPhone

    2014 · its alternatives →

13. 13
    Faye - Free Privacy-first Period Tracker▲20

    Track your menstrual cycle with accuracy and total privacy

    2025 · faye.health · its alternatives →

14. 14
    Pregnancy Calculator.me▲8

    Your pregnancy journey starts here

    2025 · its alternatives →

15. 15
    Simply Track: Period & Cycle Tracker▲2

    The private period tracker that grows with every cycle

    17d ago · simply-track.com · its alternatives →

16. 16
    Pregnancy Calculator ▲8

    Pregnancy Calculator: Track Your Baby’s Growth

    2025 · its alternatives →

17. 17
    Luna - Family period tracker▲6

    Track your menstrual cycle effortlessly with Luna

    2025 · play.google.com · its alternatives →

18. 18
    PeriodlyWise▲2

    Privacy-first period tracking with Cycle insights

    Jun 2026 · periodlywise.com · its alternatives →

19. 19
    Luna - Private Period Tracker▲11

    Your period data never leaves your phone. 100% private.

    Nov 2025 · apps.apple.com · its alternatives →

20. 20
    1stcalc.com▲13

    Smart online calculators for everyday tasks

    Oct 2025 · 1stcalc.com · its alternatives →

21. 21
    Ovulation Calculator▲5

    Track fertile days & ovulation period

    2025 · its alternatives →

22. 22
    Fertile Days Calculator▲7

    Free & accurate ovulation calculator tool

    Nov 2025 · its alternatives →

23. 23
    Era - Period and Ovulation tracker▲6

    Understand Your Body, Every Day.

    2025 · app.meetmighty.com · its alternatives →

24. 24
    Ovulation Calendar & Tracker▲2

    Keep track of your menstrual cycles with Period Calendar.

    2022 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →