Tracking your cycle shouldn’t require a complicated app full of unnecessary features. I built MomoCalendar because I wanted something simple: enter your last period date once, and let the app handle the predictions for your next period, fertile window, and ovulation day.
I started this project for myself—I found existing period trackers cluttered and slow to use. The core insight was simple: most people need the same core predictions, but they want to customize how their own body works. So I built MomoCalendar around personalization without complexity. You can adjust your average cycle length, period length, and ovulation timing, but the app does the heavy lifting automatically.
Beyond predictions, I added logging tools for the things that actually matter to you: daily flow level and pain scores, symptoms, mood, contraceptive pills (both regular and emergency), and intimate relations. All of this data stays private and encrypted on your device, synced only to your own account.
What it does
- Auto-predicts your cycle — next period, fertile window, and ovulation day appear automatically on a clean month view
- Customizable cycle lengths — adjust your average cycle and period length to match your body, not a template
- Daily logging — track flow, pain (0–10 scale), symptoms, mood, and personal notes all in one place
- Pill tracking — log your oral contraceptive schedule or emergency contraception doses
- Relation logging — keep track of protected and unprotected relations discreetly
- Statistics and patterns — see your symptoms, mood, pill use, and relations visualized over time
- Reminders — gentle notifications for period start, ovulation day, and daily log prompts
- App lock — PIN-protect your data for added privacy
MomoCalendar is designed for anyone who wants to understand their cycle better. That includes people with irregular periods who need reliable predictions, folks practicing natural family planning or trying to conceive, pill users who struggle to remember their daily dose, and anyone curious about how their symptoms and mood shift throughout the month. The app works in both light and dark mode and supports Korean and English.
Your data is encrypted in transit and tied only to your account. I don’t sell or share your information with third parties beyond what’s needed for ad personalization, and you can delete everything whenever you want.
If you’re looking for a straightforward cycle tracker that respects your privacy, MomoCalendar is ready for you on Google Play. Download it today and start tracking what matters to you.
Note: MomoCalendar is a tracking tool, not a medical device. Always consult a qualified healthcare provider about any concerning symptoms.
Play Store에서 다운로드: MomoCalendar – Period Tracker
Official page: reactiveworks.dev/apps/momocalendar
Update history: ahngo13.github.io
Leave a Reply