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Prayer-Based App Blocker - Complete Documentation

Welcome! This repository contains complete documentation for building a mobile app similar to PrayScreen - a spiritual discipline app that blocks distracting apps until users complete a prayer/reading session.

📚 Documentation Files

1. PRODUCT_SPECIFICATION.md

Complete product specification including:

  • Executive summary and core concept
  • All features to build (app blocking, unlock flow, content library, etc.)
  • Technical requirements (iOS/Android APIs)
  • User flows and diagrams
  • Success metrics
  • Development phases (MVP → Full Release)
  • Risk mitigation strategies

Start here to understand what you're building and why.

2. DATA_STRUCTURES.md

Comprehensive data structures and schemas:

  • User Profile (preferences, stats, subscription)
  • Blocked Apps (state management)
  • Bible Verses & Prayer Content
  • Prayer Sessions (reading history)
  • Daily Content (featured verses)
  • Notifications
  • RevenueCat Integration models
  • Analytics Events
  • API endpoints
  • Data relationships

Use this when designing your database and API.

3. JSON_EXAMPLES.md

Real-world JSON examples for every data structure:

  • Realistic sample data
  • API request/response examples
  • Multiple user scenarios (free, premium, trial)
  • RevenueCat webhook events
  • Analytics event examples

Reference this when implementing your API and testing.

4. REVENUECAT_INTEGRATION.md

Complete guide to implementing subscriptions:

  • Setup instructions (App Store Connect, Google Play)
  • Mobile SDK integration (iOS Swift, Android Kotlin)
  • Backend webhook implementation
  • Paywall UI best practices
  • Pricing strategies
  • Subscription lifecycle management
  • Testing procedures
  • Common issues and solutions

Follow this when implementing monetization.

🚀 Quick Start Guide

Phase 1: Planning & Setup (Week 1)

  1. Review Documentation

    • Read PRODUCT_SPECIFICATION.md cover to cover
    • Understand the data structures
    • Review JSON examples
    • Plan your tech stack

  2. Make Key Decisions

    • iOS first or Android first? (or React Native/Flutter for both?)
    • Backend: Firebase, Supabase, or custom API?
    • Will you use a UI framework? (SwiftUI, Jetpack Compose, etc.)
    • Pricing: Monthly? Annual? Trial period?

  3. Set Up Accounts

    • Apple Developer Account ($99/year) for iOS
    • Google Play Developer Account ($25 one-time) for Android
    • RevenueCat account (free to start)
    • Backend service account (Firebase/Supabase)

Phase 2: MVP Development (Weeks 2-7)

  1. Core Features Implementation

    • User authentication
    • App blocking system (iOS Screen Time API or Android Accessibility Service)
    • Basic verse library (start with 50-100 verses)
    • Unlock flow (verse display → timer → unlock)
    • Settings page (select apps to block, adjust timing)

  2. RevenueCat Integration

    • Configure in-app products
    • Integrate SDK
    • Implement paywall UI
    • Test subscriptions in sandbox

  3. Testing

    • Test blocking/unlocking flow
    • Test all user interactions
    • Test subscription flow
    • Beta test with 10-20 users

Phase 3: Polish & Launch (Weeks 8-9)

  1. Polish

    • Improve UI/UX based on beta feedback
    • Add onboarding flow
    • Optimize performance
    • Add analytics

  2. App Store Preparation

    • Create app screenshots
    • Write app description
    • Create privacy policy
    • Create terms of service

  3. Launch

    • Submit to App Store / Play Store
    • Prepare marketing materials
    • Set up customer support

🎯 Minimum Viable Product (MVP)

To launch quickly, focus on these core features:

Must Have ✅

  • App blocking (3 apps max for free users)
  • Basic verse library (50 verses minimum)
  • Simple unlock flow (read for 30s → unlock for 15min)
  • One subscription tier (Premium: unlimited apps)
  • Basic settings (select apps, enable/disable blocking)

Nice to Have (Post-Launch) 🔄

  • Advanced scheduling
  • Custom prayers
  • Analytics dashboard
  • Daily verse notifications
  • Streak tracking
  • Achievements

💰 Monetization Strategy

Free Tier

  • Block up to 3 apps
  • Access to 100 basic verses
  • Fixed reading time (30 seconds)
  • Ads between unlock sessions (optional)

Premium Tier ($4.99/month or $29.99/year)

  • Block unlimited apps
  • Full verse library (500+ verses)
  • Custom reading duration
  • Custom prayers
  • Advanced scheduling
  • No ads
  • Analytics & insights
  • Cloud sync

Expected Metrics

  • 2-5% conversion rate (free → premium)
  • $0.40 - $1.00 cost per install (with TikTok ads)
  • 3-5% monthly churn rate

🛠️ Technology Stack Recommendations

Option 1: Native Development (Best Performance)

iOS:

  • Language: Swift
  • UI: SwiftUI
  • Database: Core Data or Realm
  • API Client: URLSession + Codable
  • Blocking: Screen Time API

Android:

  • Language: Kotlin
  • UI: Jetpack Compose
  • Database: Room Database
  • API Client: Retrofit + Coroutines
  • Blocking: Accessibility Service API

Backend:

  • Firebase (Firestore + Auth + Functions)
  • Or Supabase (PostgreSQL + Auth + Edge Functions)

Pros: Best performance, native APIs access Cons: Need to build twice (iOS + Android separately)

Option 2: Cross-Platform (Faster Development)

Framework: React Native or Flutter

React Native:

  • UI: React Native components
  • State: Redux or Context API
  • Database: AsyncStorage + WatermelonDB
  • Blocking: Native modules for iOS/Android

Flutter:

  • UI: Flutter widgets
  • State: Provider or Riverpod
  • Database: Hive or Drift
  • Blocking: Platform channels for iOS/Android

Backend: Same as Option 1 (Firebase or Supabase)

Pros: Write once, deploy to iOS + Android Cons: May need native modules for blocking features

📊 Success Metrics to Track

User Engagement

  • Daily Active Users (DAU)
  • Weekly Active Users (WAU)
  • Prayer sessions per user per day
  • Average reading time
  • Retention (Day 1, Day 7, Day 30)

Monetization

  • Free → Premium conversion rate
  • Monthly Recurring Revenue (MRR)
  • Churn rate
  • Average Revenue Per User (ARPU)
  • Lifetime Value (LTV)

Product

  • Most blocked apps
  • Most read verses
  • Feature usage rates
  • Crash rate
  • App Store rating

🎨 Design Principles

  1. Simplicity First: The app interrupts users, so make the experience quick and peaceful
  2. Spiritual Focus: UI should feel calm, not gamified or aggressive
  3. Accessibility: Large text, good contrast, support for screen readers
  4. Performance: Fast loading, smooth animations, no lag
  5. Reliability: Blocking must work consistently, or users will uninstall

⚖️ Legal & Compliance

Required Documents

  • Privacy Policy: How you collect/use data
  • Terms of Service: Rules for using the app
  • Subscription Terms: Clear pricing and auto-renewal info

Data Privacy

  • Minimize data collection
  • Don't track which apps users open (only that they attempted)
  • Anonymize analytics data
  • Support data export and deletion
  • Be transparent about Accessibility Service usage (Android)

App Store Guidelines

  • Clearly explain why you need Screen Time permission (iOS)
  • Clearly explain why you need Accessibility Service (Android)
  • Don't make misleading claims
  • Must have working "Restore Purchases" button

🚨 Common Pitfalls to Avoid

  1. Don't over-engineer: Start simple, iterate based on user feedback
  2. Test blocking thoroughly: This is your core feature, it MUST work reliably
  3. Don't skip onboarding: Users need to understand how the app works
  4. Don't ignore feedback: Users will tell you what's broken
  5. Don't neglect performance: Laggy apps get uninstalled
  6. Don't forget restore purchases: This is required by App Store
  7. Don't make bypass too easy: Users will abuse it and lose the benefit

📱 Competitive Analysis

PrayScreen (Inspiration)

  • Strengths: Good concept, TikTok viral success, simple UX
  • Weaknesses: Reliability issues (per reviews), paywall confusion
  • Opportunity: Build a more reliable, polished version

Similar Apps

  • One Sec: Breathing exercise before opening apps (not prayer-focused)
  • Forest: Plant trees to avoid phone use (gamified)
  • Freedom: Block apps/websites (not spiritual)
  • Your Advantage: Unique spiritual angle for Christian market

🎯 Go-to-Market Strategy

Pre-Launch

  1. Create TikTok account
  2. Post 3-5 videos explaining the concept
  3. Build email waitlist
  4. Create simple landing page

Launch Week

  1. Submit to App Store / Play Store
  2. Post TikTok videos daily
  3. Cross-post to Instagram Reels
  4. Submit to Product Hunt (optional)
  5. Reach out to Christian influencers

Post-Launch

  1. Respond to all reviews
  2. Fix bugs quickly
  3. Iterate based on feedback
  4. Consider paid ads once proven (TikTok, Meta)
  5. Build community (Discord, subreddit)

📞 Support & Updates

How to Get Help

  • RevenueCat: support@revenuecat.com
  • Apple Developer Support: developer.apple.com/support
  • Google Play Support: play.google.com/console/developers/support

Keeping Up to Date

  • Subscribe to RevenueCat changelog
  • Follow iOS/Android API updates
  • Join mobile dev communities (Reddit, Discord)
  • Test new OS versions in beta

✅ Pre-Launch Checklist

Technical

  • App blocking works reliably
  • Subscriptions work in sandbox
  • App doesn't crash
  • Handles edge cases (force quit, battery saver, etc.)
  • Works on various devices/OS versions

Business

  • Privacy policy published
  • Terms of service published
  • Support email set up
  • Pricing finalized
  • RevenueCat configured

Marketing

  • App icon designed
  • Screenshots created (5-6 per platform)
  • App description written
  • Landing page live (optional)
  • Social media accounts created

Legal

  • Registered business (if required)
  • Tax forms submitted (Apple, Google)
  • Insurance (optional but recommended)

🎓 Additional Resources

Learning

Communities

  • r/iOSProgramming
  • r/androiddev
  • r/reactnative (if using React Native)
  • r/FlutterDev (if using Flutter)
  • RevenueCat Community Slack

Tools

📝 Final Notes

This is a comprehensive guide to building a prayer-based app blocker. You now have:

✅ Complete product specification ✅ Data structures and schemas ✅ JSON examples for all data types ✅ RevenueCat integration guide ✅ Development roadmap ✅ Go-to-market strategy

Next steps:

  1. Choose your tech stack (native vs cross-platform)
  2. Set up your development environment
  3. Start with Phase 1 features
  4. Build, test, iterate
  5. Launch and learn from users

Remember: Start small, ship fast, iterate based on feedback. The best app is the one that actually gets built and launched! 🚀

📧 Questions?

If you have questions about:

  • Architecture decisions: Review DATA_STRUCTURES.md
  • Feature implementation: Check PRODUCT_SPECIFICATION.md
  • Subscriptions: See REVENUECAT_INTEGRATION.md
  • Data formats: Look at JSON_EXAMPLES.md

Good luck building your app! 🙏

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