This is a completely new app: the calendar, the sync and every screen have been rebuilt from scratch. All your data is here — cycles, marks and comments are carried over from the previous version the first time you sign in. A new calendar • Pick any day right in the calendar — the day card opens on it, and a swipe moves it along • Period, fertile window and ovulation predictions right in the grid: confirmed days are filled, predictions are outlined Your day • Mark a period as started or ended in one tap • Flow: light, moderate or heavy • Ovulation: automatic, confirmed, a day you pick yourself, or none • Comments and your own tags for symptoms, mood and anything worth remembering • Mark a new period as started while the previous one was never ended, and it is confirmed for you Statistics • Average cycle length and average period length over 6 months, a year or all time • Cycle history with a chart Sync and devices • Everything works offline — your changes reach the server on their own once there is a connection • One account on several devices, with a list of the sessions that are active • Sign in with email Predictions refine themselves Cycle length, period length and the luteal phase are measured from the cycles you record. You can still set the values yourself in your profile. Notifications Reminders for the start and end of your period and for ovulation. One switch turns them off. Appearance Three accent colors — coral, rose and berry — and a dark theme. If you used to sign in with a phone number, add an email in your profile to be sure you keep access to your account.

Fixed a tag synchronization bug that could prevent tags from displaying when transferring data to a new device.

Bug fixes and stability improvements.

Optimized app performance. Everything now works even faster and more stable. Added minor design improvements for more comfortable usage. Enhanced security and data protection. Your information is under reliable protection. Fixed minor issues for smoother app operation. This is an interim update before a major release. We're preparing lots of exciting features for you — stay tuned for updates!

– Internal components updated – Improved authentication: call-based login is suggested if SMS doesn’t arrive – Increased stability and performance

Now it’s easier to determine what day of the cycle is. Improved stability.

Updated libraries and removed some dependencies. Visual changes are noticeable for new users only

Important and technical update. No visual changes, but everything works even better. The minimum version required to use RedCalendar is now iOS 12. According to the year-end analytics report, this will not affect any existing users! Thank you for using the app!

The app can now mark the end date of a previous period when you mark the start of a new period

Minor improvements for iOS 16

Fixed a bug that could affect some users when changing the time zone.

Now tags are displayed directly in the calendar.

Stability improvements

New "statistics" section for those who want more numbers. And tags for those who love order. Bug fixes, performance improvements.

First big update! Now you can free test tags — the simplest and flexible way for giving additional info about the day. Just add one or more custom tags from four different categories and track your workouts, emotions or new habits. So you can use the app every day as your personal dairy.

Security update

Now the app works even faster.

Added auth via Flash call. Some UI improvements.

Some improvements for new users