Simple App

1. Pick one constraint (e.g., no gym access, low carb preference, or time poverty) and build the core flow: user inputs goals + habits → AI generates weekly micro-plans → user logs results → coach adapts next week. 2. Use an LLM API (Claude/GPT-4) + simple Postgres DB to store user profiles, logs, and coaching history; build a React or Next.js frontend with Stripe for billing. 3. Launch with a single paid tier ($10–20/mo); use Lemlist or manual outreach to find 20–50 beta users in fitness communities (Reddit, Twitter fitness threads, WhatsApp groups) and iterate on retention. 4. Build a simple feedback loop: after each week, ask users if the plan was realistic; use their answers to prompt-engineer the AI to be more conservative or ambitious. 5. Once you hit 500+ paid users and 60%+ monthly retention, add mobile (Flutter or React Native) and a referral program; expand to YouTube shorts or