Calla: Period Tracker
Cycle tracking for teens
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Built for teens, not retrofitted for them. No pregnancy talk, no ads, no accounts. Just your cycle - finally explained in a way that actually makes sense.
Most period apps were built for adults trying to get pregnant. Calla wasn't. It's built for teens who just want to understand what's happening in their body - without the noise, the upsells, or the ovulation countdowns. Your data lives on your phone. No accounts required. No ads. No third parties, no data brokers, no advertisers. Optional parent share, if you want it.
Privacy-first. Always.
All your data stays on your phone. No accounts. No cloud. No ads. No data selling. Period.
Built for how your body actually works
Irregular cycles? That's normal, especially when you're starting out. Calla doesn't just assume a 28-day cycle - it learns your patterns and gives you predictions that actually make sense for your body.
Track what matters to you
Log your period, flow level, mood, energy, cramps, sleep, skin, focus, appetite, and activity. See how your cycle connects to how you feel day to day.
Understand your cycle
Get gentle, age-appropriate insights about each phase of your cycle - what's happening in your body and what to expect.
Prep-day reminders
Get a heads-up before your period is predicted to start so you're never caught off guard.
Parent Mode
Share a simple wellness signal with a parent or guardian - "all good" or "heads up" - without revealing any cycle details. Communication on your terms.
Calla is not a medical app. It does not diagnose, treat, or prevent any medical condition. If you have health concerns, talk to a doctor.
Ratings & Reviews
The developer, Roxana Heitz, 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
- Roxana Heitz
- Size
- 34.7 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
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- Copyright
- © 2026 Calla