Flow State Cycle

Private Period Tracker

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

We built this after 30-second ads before logging a period, and apps selling cycle data. No ads, no account, no paywall. Your data stays on your phone. Flow State is a private, local-first period tracker that keeps your health data on your device — no account required, no cloud, no tracking. Log your period with a single tap. Flow State learns your unique cycle and predicts your next period using your own data, not assumptions. FEATURES • Smart predictions — weighted rolling average based on your cycle history, not a generic 28-day guess • Symptom and mood tracking — log cramps, headache, fatigue, mood changes, and more • Cycle insights — flow intensity patterns, symptom frequency, mood distribution, and correlations • Doctor-ready PDF report — share a clean summary with your healthcare provider • Apple Health and Google Health Connect sync — read and write menstrual data across your health ecosystem • Curated essentials — helpful products for each phase of your cycle • Dark mode — full light, dark, and system theme support • CSV export — download your complete cycle history anytime PRIVACY FIRST Your data never leaves your device. No account, no servers, no analytics, no ads. Period.

Ratings & Reviews

  • 5.0
    out of 5
    3 Ratings

Flow State now fills the screen on iPhone Duo, with navigation on the side and a two-pane layout when unfolded. Also in this update: • More reliable Apple Health sync: no more duplicate entries, and removed days stay removed • Notes and tags are saved when you switch days • Today's date updates after midnight • More accurate predictions and fixes throughout

Version 1.4.0

The developer, Brett East, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Brett East
Size
49.7 MB
Category
Health & Fitness
Compatibility
Requires iOS 16.4 or later.
  • iPhone
    Requires iOS 16.4 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
9+
Copyright
© 2026 Brett East
  • Privacy Policy

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