CoachZeno

AI coaching app with premium subscriptions powered by RevenueCat, offering personalized guidance through installable AI coaches.

Comment

Inspiration

What it does

Inspiration

Personal growth coaching is expensive and inaccessible for most people. We wanted to create an AI-powered coaching experience that feels premium, personal, and affordable — with a sustainable subscription model powered by RevenueCat.

What it does

CoachZeno is a mobile AI coaching app built with React Native (Expo) that offers:

  • Installable AI Coaches: Browse a gallery of specialized AI coaches, each with unique personalities and expertise areas
  • Multi-Coach Sessions: Chat with multiple coaches in a single session for diverse perspectives
  • Context Vault: Store your values, goals, and constraints so coaches provide truly personalized guidance
  • Voice Transcription: Speak naturally and get coaching responses
  • Premium Atmospheres: 5 beautiful visual themes (Midnight Gallery, Botanist, Architect, Desert Solstice) unlocked for subscribers
  • Sanctuary & Rituals: Mindfulness features for daily reflection

How we built it

  • Frontend: React Native with Expo SDK 54, Expo Router 6, TypeScript, React Native Reanimated
  • Backend: Supabase (auth, database, edge functions) with SSE streaming for real-time AI responses
  • AI: OpenRouter integration for flexible model access, with custom system prompts per coach
  • Monetization: RevenueCat SDK for managing two subscription tiers — Oracle and Sovereign Member — with server-side entitlement validation via Supabase edge functions
  • Design: Premium editorial design system with glass morphism, serif typography, and gold accents

RevenueCat Integration

RevenueCat powers our entire subscription infrastructure:

  • Client-side SDK (react-native-purchases) handles purchase flows, offering presentation, and entitlement checking
  • Server-side validation via RevenueCat REST API in Supabase edge functions ensures secure entitlement verification
  • Two-tier model: Oracle tier unlocks advanced coaching features; Sovereign Member unlocks premium visual themes and all coaches
  • Billing tier caching in Supabase for performant access control

Challenges we ran into

  • Setting up deep linking for OAuth callbacks across Android and iOS
  • Implementing SSE streaming for real-time AI chat responses in React Native
  • Designing a conditional auth system that supports both authenticated and guest modes
  • Configuring production RevenueCat with Google Play service account credentials

What we learned

  • RevenueCat dramatically simplifies subscription management — handling receipts, entitlements, and cross-platform billing in a unified API
  • Server-side entitlement checking is essential for security, preventing client-side tampering
  • The RevenueCat dashboard provides invaluable insights into subscriber behavior

What's next for CoachZeno

  • iOS App Store launch
  • More specialized AI coaches with community submissions
  • Group coaching sessions
  • Integration with productivity tools (Notion, Todoist, Linear)

Built With

Share this project:

Updates