TideBook
Cycle tracker for him
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Most cycle apps for men show you the same textbook average. TideBook starts there — then learns from what actually happens in your relationship, and adjusts. One tap a day. Nothing leaves your phone.
HOW IT WORKS
• Enter the date her last period started — that's the whole setup
• Each day, answer one question with one tap
• TideBook blends the textbook curve with your couple's own pattern, and the forecast gets sharper every week
WHAT YOU GET
• Today's outlook at a glance, with the current phase explained in plain words
• A fourteen-day forecast strip
• The full cycle view: where she is in the month, and the best days ahead
• A next-period estimate that adapts to her actual cycle length
PRIVATE BY DESIGN
Everything stays on your phone. No account, no cloud, no analytics, no data collection of any kind.
TideBook is not a medical device and not a contraceptive method. Predictions are estimates, and cycles vary widely.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• New: Her situation. A new baby pauses the forecast and switches to newborn-phase tips; hormonal birth control removes the fertile window.
• New in Pro: Your pattern shows which days of her cycle your yes days keep landing on.
• New: Import data restores a TideBook backup, for example on a new phone.
• TideBook Pro stays active between launches, even on a slow connection.
• Dates no longer shift by a day around daylight saving changes.
The developer, Co Digit, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Co Digit d.o.o.
- Size
- 41.6 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.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Mature or Suggestive Themes
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- TideBook Pro Annual $19.99
- TideBook Pro Monthly $2.99
- Copyright
- © 2026 Co Digit d.o.o.