iPhone Screenshots


cycle.log is not "yet another period tracker." Unlike other menstrual cycle trackers, cycle.log makes is extremely simple to log your cycles and see when your next period is going to start.

Not only is it easy to log your cycles, but cycle.log will also send you a friendly reminder before your next period so you can be prepared.

The more you use cycle.log the smarter it becomes. Every time you log a cycle the app automatically adjusts your average cycle length and uses that to estimate your next period. It also calculates the standard deviation of your cycle length which tells you how different your cycles are from one another.

Please give cycle.log a try and be sure to tell your friends!

What’s New

Version 1.3

This app has been updated by Apple to display the Apple Watch app icon.

In this version of cycle.log...
+ The dashboard is easier to use
+ Previously logged cycles can be edited

Thanks for using cycle.log! If you like it please consider giving us a rating and don't forget to tell your friends!

Ratings and Reviews

4.4 out of 5
13 Ratings

13 Ratings

App Privacy

The developer, 433 Labs, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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