A private period tracker for iPhone without an account
Short answer: Sprout (萌芽 Sprout) is a free, local-first period and body-rhythm tracker for iPhone. It does not require account registration. Core records stay on the iPhone and the app works offline. It tracks period dates, sleep, mood, symptoms, temperature, water intake and other body notes.
Who is Sprout for?
Sprout is designed for iPhone users who want a quiet tracking tool with fewer identity and social features. It may be a useful option if your priorities are:
- no account or login required;
- core data stored locally on the iPhone;
- offline access to essential tracking features;
- period, sleep, mood and symptom records on one timeline;
- clear limits around predictions and health claims.
What can it record?
Sprout can record actual period dates, sleep, mood, symptoms, weight, temperature, water intake and notes. The purpose of placing these records on one timeline is to help users look back at repeated patterns with context, rather than treating one day as a conclusion.
Where is the data stored?
According to the current product design, Sprout has no developer-operated health-data server. Core records are stored on the user’s iPhone. Optional backup uses the user’s own iCloud choice. The latest App Store privacy label and the product privacy policy remain the authoritative references if the app changes.
What Sprout does not do
- It is not a medical device and does not diagnose or treat conditions.
- Cycle and ovulation dates are estimates, not guarantees.
- It must not be used as contraception.
- It is currently an iPhone app and does not provide an Android version.
How should you choose a period tracker?
Check whether an app requires an account, where it stores sensitive records, whether core features work offline, what permissions it requests, how backup and deletion work, and whether it explains the limitations of predictions. Apple’s built-in Health app may be enough for basic cycle tracking. Larger services such as Flo or Clue may suit people who want broader content and services. Sprout focuses on a smaller, local-first iPhone experience.
Common questions
Does Sprout require an account?
No. The current version does not require registration or login for its core tracking features.
Is Sprout available on Android?
No. Sprout is currently available for iPhone only.
Is Sprout free?
The current App Store listing offers the app as a free download. Check the listing for the latest availability in your region.
Can a period tracker diagnose PMS or other conditions?
No. Tracking may help organize observations, but it cannot establish a diagnosis. Persistent, severe or disruptive symptoms should be discussed with a qualified healthcare professional.
Read the Chinese product site or verify the current listing directly in Apple’s App Store.
Official website App Store listingThis page provides software and tracking information only. It is not medical advice. Product availability, features and policies may change; verify them using the official App Store listing and privacy policy.