Contact person: Android Period Tracker with Premium

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Location: Morādābād, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I’m building a modern period-tracking app dedicated to Android users and I’m ready to bring in an experienced developer who can take it from concept to Play Store release. The core experience must feel seamless: users should be able to record their cycles, log daily symptoms, and receive reliable fertility predictions.

A second, paid tier unlocks richer functionality. Subscribers will receive personalized health reports, exclusive educational articles and videos, plus deeper analytics that surface patterns and actionable insights. I’d like these premium features delivered through Google Play in-app subscriptions.

Here’s what I need from you:
• A fully native Android build (Kotlin or Java) that’s cleanly architected and well-documented
• Intuitive UI/UX that keeps diary entries, calendar view, and insights one tap away
• Secure local storage with optional cloud backup, following best practices for sensitive health data
• Accurate cycle and fertility algorithms, with parameters I can adjust from a simple admin panel
• Subscription setup inside Google Play Billing, including free-trial and paywall screens
• Analytics hooks so I can measure engagement and conversion

When you submit, please point me to any health or subscription apps you’ve shipped, mention the libraries or frameworks you prefer, and outline how you’ll validate prediction accuracy. Once we agree on milestones I’ll share wireframes and brand assets so we can get moving quickly." (client-provided description)