I’m ready to take my online women’s fitness business to the next level with a fully branded mobile app that blends the best elements of Lenus, Everfit, Stridist and Trainerize, then adds a period-tracking experience similar to Flo and a lightweight AI assistant. Core focus • Coaching and training sit at the heart of this build. I need a smooth way to create and deliver customised workout plans for every client, update them on the fly and see adherence at a glance. • Period tracking must be native, not a bolted-on webview, so clients can log cycles, symptoms and energy levels and see how each phase aligns with their workouts. • An AI layer should answer common questions, surface form-check tips and suggest small plan tweaks based on user data—all while learning from my coaching style. Workflow essentials – Coach dashboard (web) for programming, chat and file sharing – Client app (iOS + Android) with clean, feminine branding, push notifications and in-app messaging – Exercise video library streaming in HD, offline caching optional – Secure user authentication, Stripe or in-app purchases for subscription tiers – Basic analytics: active users, program completion, engagement by cycle phase Deliverables 1. Figma or comparable high-fidelity UI prototype signed off by me 2. Complete, publish-ready React Native (or similar cross-platform) codebase with README 3. Backend (Firebase, Supabase or your proposed stack) fully deployed and documented 4. One-month post-launch support for bug fixes and minor tweaks Acceptance criteria • I can create, assign and edit an individual’s workout plan in under five clicks. • Clients can record period data and immediately see cycle-phase labels on their training calendar. • The AI chat answers at least ten seeded FAQs with accurate, context-aware replies. • App passes App Store and Play Store review on first submission. If this sounds like a build you can own end-to-end, tell me which tech stack you’d pick, any similar apps you’ve shipped, and the timeline you foresee.