Ranking updated
Best period tracker apps in 2026
Start with Flo or Clue: both predict your next period and fertile window, log symptoms and moods, and switch to a pregnancy mode, with extra insights on a subscription. Clue is based in Berlin under GDPR; Flo has an Anonymous Mode. On a Samsung phone, Samsung Health already has cycle tracking. Details below. This is not medical advice, and an app is not contraception.
How we picked: a cycle tracker has to predict well, make logging quick and keep sensitive data safe. We checked each app’s own store description for predictions, symptom logging, what needs a subscription and what it says about privacy.
Flo or Clue
Flo lets you log dozens of symptoms and moods, supports irregular cycles, has an Anonymous Mode that does not link your name or email, and moves into week-by-week pregnancy tracking; deeper insights are in Flo Premium. Clue predicts your period and fertile window, tracks birth control, has modes for trying to conceive, pregnancy and perimenopause, and layers in data from Apple Watch, Oura, Fitbit and others; more analysis is in Clue Plus.
Cycle tracking without a separate app
On Android, Samsung Health includes cycle tracking for the menstrual cycle and related symptoms, so on a Samsung phone you may not need anything else.
| App | Best for | Platforms | Price | Privacy |
|---|---|---|---|---|
| FloApp StoreGoogle Play | predictions, symptoms and pregnancy mode | iOS, Android | free; Flo Premium subscription | Anonymous Mode |
| ClueApp StoreGoogle Play | science-backed tracking and wearables | iOS, Android | free; Clue Plus subscription | based in Berlin, GDPR |
| Samsung HealthGoogle Play | cycle tracking on a Samsung phone | Android | free to download | Samsung account |
Frequently asked questions
What is the best free period tracker?
Flo and Clue are both free to download and cover predictions and symptom logging; their deeper insights need Flo Premium or Clue Plus.
Can a period tracker be used as contraception?
No. These apps predict your cycle and fertile window, but they are not medical advice or contraception.