PeriodCast: Period Tracker
Adaptive period & fertility
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
PeriodCast predicts your period and fertile window from your own logged cycles — and the prediction actually adapts as your body changes, instead of staying stuck on a fixed 28-day guess.
WHAT IT DOES
• Adaptive predictions: recent cycles are weighted more heavily, so when your cycle shifts, your next-period and fertile-window forecasts shift with it.
• Cycle wheel: see your whole cycle at a glance — period days, fertile window and ovulation — on one clear visual ring.
• Fertile & ovulation window: know your predicted fertile days and estimated ovulation date, computed from your data.
• Cycle insights: your average cycle length, how regular you are, prediction confidence, and a history chart that shows the adaptive engine at work.
• Phase guide: tap your cycle for a plain-language explanation of the current phase and what to expect, with links to medical sources (NHS, NIH, BMJ).
• Cycle history: view every period you've logged, add a date you forgot, and delete a mis-logged day so your predictions stay accurate.
• Discreet reminders (optional, off by default): a heads-up before your next period and before your fertile window begins — automatically updated every time you log a new period.
PRIVATE BY DESIGN
Everything is computed on your device. No account to create, no cloud sync of your cycle data.
HONEST BY DESIGN
Core tracking is free. No forced trial to open the app, no hidden charges. PeriodCast Plus is an optional auto-renewing subscription that unlocks your full cycle history — view every logged period, add past dates, and correct mistakes. Clearly priced, cancel anytime.
Subscription: auto-renews unless canceled at least 24 hours before the current period ends; payment is charged to your Apple ID at confirmation; manage or cancel in your App Store settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://periodcast.com/privacy
Ratings & Reviews
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Faster, more reliable purchases and restore. Terms and Privacy now open inside the app. 9 new languages (28 total). Update reminders and bug fixes.
The developer, Tony AI, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- BIGAI MEDIA JOINT STOCK COMPANY
- Size
- 47.5 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 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.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- PeriodCast Plus Monthly $9.99
- PeriodCast Plus Annual $39.99
- Copyright
- © 2026 BIGAI MEDIA JOINT STOCK COMPANY