HEALTHMobile App · Health & Fitness
HerCycle
The challenge: People who menstruate need a reliable way to track cycles, predict periods and understand symptoms — but many cycle apps require accounts, sync intimate health data to servers, or handle irregular cycles poorly.
Our answer: HerCycle is a privacy-first period tracker: menstrual cycle logging with an adaptive irregular-cycle algorithm, ovulation and fertile-window estimates, PMS/symptom/mood logging with health reports, and reminders — all stored on-device, account-free and fully offline, with a clear medical disclaimer that estimates are not medical advice.
Free · Live on Google Play
The challenge
People who menstruate need a reliable way to track cycles, predict periods and understand symptoms — but many cycle apps require accounts, sync intimate health data to servers, or handle irregular cycles poorly.
Our approach
- 01Built the period and cycle logging flow with a visual menstrual calendar, flow tracking and next-period countdowns.
- 02Implemented the irregular-cycle engine that adapts predictions to cycle variations, plus ovulation and fertile-window estimates with BBT, cervical mucus and pregnancy due-date inputs.
- 03Developed symptom, PMS and mood logging with cycle health reports users can share with their doctor.
- 04Engineered the privacy-first architecture: on-device storage, no registration, offline-first, with PIN/biometric app lock.
The solution
Period & cycle logging with irregular-cycle predictions
Ovulation & fertile-window estimates
PMS, symptom & mood logging
On-device, account-free, fully offline
Tech stack
- Flutter
Results
What shipped — no estimated numbers. Ratings and download counts are added once confirmed from Play Console.
Live on Google Play, free to download
Adaptive predictions for irregular cycles
Cycle health reports to share with a doctor
PIN/biometric lock — data never leaves the device
Estimates are for personal tracking — not medical advice, diagnosis or contraception
Screenshots
Real screenshots from the Google Play listing.
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