AI-Powered Bible Companion App Development
Budget: $250 – $750 USD
Bible Companion App
Full Product & Technical Specification (v2+)
1. PRODUCT OVERVIEW
Working name: Bible Companion
Platforms: iOS / Android
Framework: Flutter
Business model: Subscription (AI-powered)
Product idea
This is not just a Bible reader.
It is a daily spiritual companion focused on:
reflection
prayer
calm guidance
habit formation
Not a social network
Not a debate platform
Not a theology course
2. CORE PRODUCT PHILOSOPHY (NON-NEGOTIABLE)
Calm, minimal, non-preachy
Personal experience, not public
One daily ritual, not feature overload
AI is a guide, not an authority
3. REQUIRED TECH STACK
Frontend
Flutter (latest stable)
State management: Riverpod
Navigation: GoRouter
Clean Architecture
Feature-based folder structure
Backend
FireBase or Supabase:
Auth (Email, Google, Apple)
PostgreSQL database
Storage
Edge Functions
AI
OpenAI API DeepSeek API
All AI calls must go through Supabase Edge Functions
No API keys in the client app
CI / Builds
Android: Codemagic (APK + AAB)
iOS: Codemagic → TestFlight
4. CODE QUALITY & UI REQUIREMENTS
UI / UX
True fullscreen (edge-to-edge)
No “device inside device” effect
Correct SafeArea usage
Native look on both platforms
No debug wrappers (DevicePreview, etc.) in release builds
Code quality
No logic in main.dart
No monolithic files
Clear separation of concerns
Meaningful commit messages
README with setup instructions
5. EXPECTED PROJECT STRUCTURE
lib/
├─ core/
│ ├─ theme/
│ ├─ routing/
│ ├─ network/
│ └─ utils/
├─ features/
│ ├─ auth/
│ ├─ home/
│ ├─ reflect/
│ ├─ bible/
│ ├─ journey/
│ └─ profile/
└─ main.dart
6. APP NAVIGATION (FINAL)
Bottom navigation tabs:
Home (Today)
Reflect
Bible
Journey
Profile
7. FEATURES — FULL VERSION
7.1 HOME / TODAY
Purpose: Entry point to the daily ritual
Features
Daily Verse
translation selection
save verse
share verse
Daily Reflection Question
text input
save response
Prayer of the Day
text
audio (v2+)
Rules
One primary CTA only
No dashboards or analytics on MVP Home
Smart CTA (adapts to user state)
7.2 REFLECT (AI CORE FEATURE)
AI Chat
Context-aware:
daily verse
user journal
conversation history
Modes:
Reflect
Ask
Pray
Limits & monetization
Free users: daily message limit
Paid users: unlimited
Journal
Daily entries
Timeline view
Search
Tags (gratitude, fear, hope, doubt)
7.3 BIBLE
Read full Bible
Chapter navigation
Highlight verses
Bookmarks
Notes per verse
API requirements
Use api.bible
All requests via Supabase Edge Functions
Aggressive caching (content is static)
7.4 JOURNEY / SPIRITUAL GROWTH (NOT MVP)
Day streak
Weekly activity
Monthly activity
Goals
Daily verse
Daily reflection
Daily prayer
Milestones
7 days
30 days
90 days
Yearly reflection
7.5 PROFILE
Account settings
Language
Bible translation
Subscription management
Restore purchases
AI personalization:
tone
response length
8. AUTHENTICATION
Providers
Email / Password
Google
Apple (iOS only)
Rules
Do not show Apple Sign-In on Android
User-friendly error messages
No raw exception text in UI
9. SECURITY REQUIREMENTS (CRITICAL)
No secrets in Flutter code
No direct calls to OpenAI or Bible API from client
All secrets stored in:
Supabase
Codemagic environment variables
Logging without PII
10. CI / BUILDS
Android
Release APK for testing
AAB for Google Play
iOS
Automatic signing
TestFlight delivery
Each milestone must include a working build.
11. ANALYTICS (MINIMUM)
DAU / MAU
Retention (D1 / D7 / D30)
AI usage
Subscription conversion
12.1 Audio Bible
Chapter-level audio
Play / Pause
±15 sec seek
Speed control
Resume playback
Source:
api.bible (if licensed)
or licensed provider
12.2 Prayer Audio
Prayer of the Day (audio)
Categories:
gratitude
fear
hope
peace
Favorites
Sleep timer
12.3 Guided Reflection Audio (HIGH VALUE)
3–7 minute sessions
Calm voice
One verse → one reflection
Background playback
Lock screen controls
Headphones / Bluetooth support
12.4 Audio Player (Shared)
One player for all audio types
Mini-player
Fullscreen player
Background playback
Media notifications (Android)
Control Center (iOS)
Flutter stack:
just_audio
audio_service
just_audio_background
12.5 Audio Architecture
Flutter App
↓
Supabase Edge Function
↓
Audio source / storage
No direct links exposed.
12.6 Offline Audio (v3)
Download audio
Subscriber-only
Storage limits
Auto-cleanup
12.7 Audio Monetization
Free:
Limited daily audio
No offline
Paid:
Full audio catalog
Offline mode
Long sessions
Night prayers / sleep mode
13. EXPLICITLY OUT OF SCOPE
Social feed
Comments
Likes
Public profiles
Debates
This product is personal, not social.
14. WORKFLOW EXPECTATIONS
Feature-based commits
Small, frequent commits
Every milestone → testable build
No build = no delivery
Full Product & Technical Specification (v2+)
1. PRODUCT OVERVIEW
Working name: Bible Companion
Platforms: iOS / Android
Framework: Flutter
Business model: Subscription (AI-powered)
Product idea
This is not just a Bible reader.
It is a daily spiritual companion focused on:
reflection
prayer
calm guidance
habit formation
Not a social network
Not a debate platform
Not a theology course
2. CORE PRODUCT PHILOSOPHY (NON-NEGOTIABLE)
Calm, minimal, non-preachy
Personal experience, not public
One daily ritual, not feature overload
AI is a guide, not an authority
3. REQUIRED TECH STACK
Frontend
Flutter (latest stable)
State management: Riverpod
Navigation: GoRouter
Clean Architecture
Feature-based folder structure
Backend
FireBase or Supabase:
Auth (Email, Google, Apple)
PostgreSQL database
Storage
Edge Functions
AI
OpenAI API DeepSeek API
All AI calls must go through Supabase Edge Functions
No API keys in the client app
CI / Builds
Android: Codemagic (APK + AAB)
iOS: Codemagic → TestFlight
4. CODE QUALITY & UI REQUIREMENTS
UI / UX
True fullscreen (edge-to-edge)
No “device inside device” effect
Correct SafeArea usage
Native look on both platforms
No debug wrappers (DevicePreview, etc.) in release builds
Code quality
No logic in main.dart
No monolithic files
Clear separation of concerns
Meaningful commit messages
README with setup instructions
5. EXPECTED PROJECT STRUCTURE
lib/
├─ core/
│ ├─ theme/
│ ├─ routing/
│ ├─ network/
│ └─ utils/
├─ features/
│ ├─ auth/
│ ├─ home/
│ ├─ reflect/
│ ├─ bible/
│ ├─ journey/
│ └─ profile/
└─ main.dart
6. APP NAVIGATION (FINAL)
Bottom navigation tabs:
Home (Today)
Reflect
Bible
Journey
Profile
7. FEATURES — FULL VERSION
7.1 HOME / TODAY
Purpose: Entry point to the daily ritual
Features
Daily Verse
translation selection
save verse
share verse
Daily Reflection Question
text input
save response
Prayer of the Day
text
audio (v2+)
Rules
One primary CTA only
No dashboards or analytics on MVP Home
Smart CTA (adapts to user state)
7.2 REFLECT (AI CORE FEATURE)
AI Chat
Context-aware:
daily verse
user journal
conversation history
Modes:
Reflect
Ask
Pray
Limits & monetization
Free users: daily message limit
Paid users: unlimited
Journal
Daily entries
Timeline view
Search
Tags (gratitude, fear, hope, doubt)
7.3 BIBLE
Read full Bible
Chapter navigation
Highlight verses
Bookmarks
Notes per verse
API requirements
Use api.bible
All requests via Supabase Edge Functions
Aggressive caching (content is static)
7.4 JOURNEY / SPIRITUAL GROWTH (NOT MVP)
Day streak
Weekly activity
Monthly activity
Goals
Daily verse
Daily reflection
Daily prayer
Milestones
7 days
30 days
90 days
Yearly reflection
7.5 PROFILE
Account settings
Language
Bible translation
Subscription management
Restore purchases
AI personalization:
tone
response length
8. AUTHENTICATION
Providers
Email / Password
Apple (iOS only)
Rules
Do not show Apple Sign-In on Android
User-friendly error messages
No raw exception text in UI
9. SECURITY REQUIREMENTS (CRITICAL)
No secrets in Flutter code
No direct calls to OpenAI or Bible API from client
All secrets stored in:
Supabase
Codemagic environment variables
Logging without PII
10. CI / BUILDS
Android
Release APK for testing
AAB for Google Play
iOS
Automatic signing
TestFlight delivery
Each milestone must include a working build.
11. ANALYTICS (MINIMUM)
DAU / MAU
Retention (D1 / D7 / D30)
AI usage
Subscription conversion
12.1 Audio Bible
Chapter-level audio
Play / Pause
±15 sec seek
Speed control
Resume playback
Source:
api.bible (if licensed)
or licensed provider
12.2 Prayer Audio
Prayer of the Day (audio)
Categories:
gratitude
fear
hope
peace
Favorites
Sleep timer
12.3 Guided Reflection Audio (HIGH VALUE)
3–7 minute sessions
Calm voice
One verse → one reflection
Background playback
Lock screen controls
Headphones / Bluetooth support
12.4 Audio Player (Shared)
One player for all audio types
Mini-player
Fullscreen player
Background playback
Media notifications (Android)
Control Center (iOS)
Flutter stack:
just_audio
audio_service
just_audio_background
12.5 Audio Architecture
Flutter App
↓
Supabase Edge Function
↓
Audio source / storage
No direct links exposed.
12.6 Offline Audio (v3)
Download audio
Subscriber-only
Storage limits
Auto-cleanup
12.7 Audio Monetization
Free:
Limited daily audio
No offline
Paid:
Full audio catalog
Offline mode
Long sessions
Night prayers / sleep mode
13. EXPLICITLY OUT OF SCOPE
Social feed
Comments
Likes
Public profiles
Debates
This product is personal, not social.
14. WORKFLOW EXPECTATIONS
Feature-based commits
Small, frequent commits
Every milestone → testable build
No build = no delivery