Anonymous Period Tracker — No Account, No Data Sharing | LunaCycle

LunaCycle is an anonymous period tracker that works with no account, no cloud storage, and no data selling — so your cycle stays yours.

Last updated July 2026

What anonymous period tracking means

An anonymous period tracker lets you log your cycle without creating an account or handing over an email. LunaCycle's Anonymous Mode keeps every period, symptom, and mood entry on your device, so there is no profile tied to your identity and no server-side database of your reproductive health. If you have ever wanted an anonymous cycle tracker with no account required, this is it.

A period app without cloud storage

Many cycle apps sync everything to the cloud by default. LunaCycle takes the opposite approach: your logs are stored locally and encrypted on your device. It is a period app without cloud storage, which means there is no central database for a breach to expose and no third party copying your entries. You can use the full cycle tracker and ovulation tracker without your data ever leaving your phone.

Encrypted on your device

Every entry is protected with AES-GCM encryption at rest. LunaCycle is an encrypted period app by design — even if someone gained physical access to your device, your cycle and fertility data stays unreadable without your unlock. Add an optional PIN lock for a second layer of protection every time you open the private period app.

A period tracker that doesn't sell your data

We do not sell your health data to third parties. LunaCycle was built as a period tracker no data sharing alternative for people who care about reproductive privacy. The free tier is supported by small, non-targeted sponsor ads to keep core tracking free; LunaCycle Plus is completely ad-free. Export everything or delete it permanently at any time — your data is always yours to control.

Anonymous Mode, Conceive, Pregnancy & Perimenopause

Privacy does not mean fewer features. As an anonymous period tracker, LunaCycle still gives you a menstrual calendar, ovulation tracker, fertility app, pregnancy tracker, and perimenopause tracker — all without an account. Curious how it compares? Read our LunaCycle vs Flo and LunaCycle vs Clue comparisons.

Start tracking privately — free

Anonymous Mode, encrypted on your device, no data selling. The private period tracker and Flo alternative.