Best free period tracker app in 2026: what is really free?
Many cycle apps call themselves free but put the basics behind a subscription. Here is what you really get for free with Flo, Clue, Natural Cycles and PERIOD.
Written by the PERIOD. team. We make a cycle app ourselves; other apps' prices vary by country, always check them in the app. As of October 2026.
Short answer: a good free period tracker lets you log your period, see predictions and get reminders without paying. Paying should only be about extras, not about understanding your own body.
What to look for
- Can you see your own history for free? Some apps let you log but put your overviews behind a subscription.
- Do you get free predictions and reminders?
- How does a free app make money? If there is no subscription, you often pay with your data.
What is free in the well-known apps?
- Natural Cycles: no free version; you always need a subscription plus a thermometer or wearable (naturalcycles.com).
- Clue: free basics with predictions and statistics, more in Clue Plus (helloclue.com).
- Flo: free basics, deeper insights and content in Flo Premium.
- PERIOD.: tracking your cycle, predictions, daily insights and reminders are free, forever. PERIOD. plus (3.99 per month or 34.99 per year, 14 days free first) adds your own assistant, a doctor report and complete fertility tracking. See what is free.
Why we keep the basics free
Understanding your own body should not be a luxury. We earn from extras in plus and baby, not from your data.
Other apps' prices and features change; always check the current details in the app itself. Brand names belong to their owners.