NeuralCalm - App Downloads

v5.9.3 - Isochronic Tones & Auto Headphone Detection

Brainwave therapy now works without headphones! App auto-detects if headphones are connected and switches between binaural beats (headphones) and isochronic tones (speakers). Both modes target the same frequencies for anxiety relief. Helpful notifications explain when headphones would improve the experience.

v5.9.3 - Speaker Mode Latest

February 2, 2026

~335 MB - Android Release APK

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v5.9.2 - Scrollable Home Previous

February 2, 2026

~335 MB - Android Release APK

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v5.9.1 - V5 Prototype Previous

February 2, 2026

~335 MB - Android Release APK

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v5.9.0 - Export & Themes Previous

February 1, 2026

~335 MB - Android Release APK

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v5.8.0 - CBT Diagrams Previous

February 1, 2026

~330 MB - Android Release APK

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v5.7.0 - Immersive V5 + Calm Game Previous

February 1, 2026

~315 MB - Android Release APK

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v5.5.0 - Progress & Achievements Previous

February 1, 2026

~316 MB - Android Release APK

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v5.4.0 - Enhanced SOS Previous

February 1, 2026

~316 MB - Android Release APK

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v5.3.2 - Fresh Build Previous

February 1, 2026

~317 MB - Android Release APK

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v5.2.0 - Settings & Faith Mode Previous

February 1, 2026

~317 MB - Android Release APK

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v5.1.1 - Stability Fixes Previous

January 31, 2026

~316 MB - Android Release APK

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v5.1.0 - Family Notifications Previous

January 31, 2026

~458 MB - Android Debug APK

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v5.0.0 - MIT Thesis Redesign Major

January 31, 2026

~458 MB - Android Debug APK

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v4.8.0 - Bug Fixes Previous

January 31, 2026

~437 MB - Android Debug APK

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v4.7.0 - Bug Fixes Previous

January 31, 2026

~437 MB - Android Debug APK

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v4.5.0 - Rive Animations Previous

January 17, 2026

~318 MB - Android APK

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v4.4.0 - Flutter Migration Previous

January 16, 2026

~58 MB - Android APK

v4.2 - Code Audit Previous

January 12, 2026

~76 MB - Android APK (React Native)

v4.1 - UX Fixes Previous

January 12, 2026

~76 MB - Android APK (React Native)

v4.0 - Icon System Previous

January 12, 2026

~76 MB - Android APK

v3.5 - Design System Previous

January 11, 2026

~72 MB - Android APK

v3.4 - CBT Program Previous

December 23, 2025

~71 MB - Android APK

v5.0.0 - MIT Masters Thesis Complete Redesign

8 New V4 Screens: Home, Breathing, Journal, Progress, SOS, Settings, Luna, Sound Sanctuary - all rebuilt from scratch
Living Environments: 5 immersive themes (Ocean, Forest, Night, Rain, Meadow) with animated overlays
Breathing-World Response: Environment brightness changes with your breath phases
Luna Companion: Empathetic chat interface with suggestion chips - "A companion, not a chatbot"
3-Step SOS Crisis Flow: Grounding → Assessment → Intervention (Columbia Protocol-aware)
Mood Journaling: 5-level mood selector + free writing + gratitude prompts
Progress Dashboard: Streak card, weekly mood overview, stats grid, achievement badges
Sound Sanctuary: Multi-sound mixing (Ocean, Rain, Forest, etc.) with sleep timer
5-Tab Navigation: Home, Breathe, SOS, Journal, Profile - always visible
"First 2 Seconds" Impact: Beautiful home screen designed for immediate visual impression

v4.6.0 - Visual Integration Fixes

Yellow Underline Fix: Fixed Material context issue causing yellow double underlines on all text
Navigation Always Visible: Bottom nav bar now visible immediately - no more hidden swipe gesture
Nature Photography: Restored beautiful nature backgrounds (ocean, forest, night, lake, rain)
Text Readability: Increased font sizes (Luna message: 22→26pt, options: 16→18pt)
Cross-Platform Fonts: Removed SF Pro Display references - uses system fonts (San Francisco/Roboto)
Improved Shadows: Better text shadows for contrast against backgrounds

v4.5.0 - Rive Animations + Build Fixes

Rive Animations: State machine animations for Luna companion, breathing circles, and SOS orb
Kotlin 2.1.0: Upgraded to latest Kotlin for Android compatibility
Gradle 8.7: Updated Gradle wrapper for newer Android dependencies
Android Gradle Plugin 8.6.0: Required for androidx.core 1.16.0
fl_chart Matrix4 Fix: Patched translateByDouble/scaleByDouble API changes
rive_native Fix: Patched onSurfaceDestroyed for Flutter surface lifecycle
ExcludeSemantics Fix: Fixed GestureDetector semantics in Living SOS Orb
BackgroundTheme Fix: Fixed Quick Alert Setup screen background reference

v4.4.0 - Flutter Migration

Flutter Rebuild: Complete migration from React Native to Flutter for better performance
36 Screens Converted: Every screen rebuilt with Flutter's widget system
Breathing Exit Fixed: X button now properly returns to home screen
SOS Stability: Fixed opacity assertion errors and overflow issues
Voice Timing: SOS voice guidance no longer auto-starts on app launch
Riverpod State: Modern state management with Riverpod providers
Hive Persistence: Fast local storage for settings and progress
Improved Animations: Smoother transitions with Flutter's animation system
Cross-Platform Ready: Same codebase for iOS and Android
Hot Reload Development: Faster iteration for future updates

v4.2 - Comprehensive Code Audit (React Native)

React Hooks Fixed: Fixed 4 screens that could crash (JournalScreen, HealthScreen, GuidedMeditationScreen, AchievementsScreen)
Bottom Padding Fixed: 11 screens now have proper padding (120px) so buttons aren't hidden by tab bar
SOS Log Button: Now shows confirmation when you log a panic session
Export Journey: Progress screen now exports your stats via Share
Sign Out Button: ProfileScreen button now responds with helpful info
Claustrophobia SOS Banner: Now navigates to SOS screen when tapped
CBT Error State: Module not found now shows helpful message with back button
SOS Navigation: Added SOS to app navigation for direct access

v4.1 - UX & Flow Fixes

PMR Continue Button: Fixed button being hidden by bottom navigation
Luna Clarity: Changed "Tap Luna to begin" to "Tap the circle below to begin"
HomeScreen Luna Hint: Now says "Tap to start breathing" (clearer)
Design System: 27 screens updated with consistent glass cards and colors
Flow Logic Review: Comprehensive audit of all screen navigation
Scroll Padding: Increased padding to ensure buttons visible above tab bar

v4.0 - Icon System Features

60+ SVG Icons: Professional icon library replacing emojis
Zero TypeScript Errors: Full type safety verified (293 → 0)
User Profile: Personalized name in SOS completion ("Great job, [Your Name]!")
RevenueCat Ready: Payment service skeleton for premium subscriptions
21+ Screens Updated: Icons for navigation, health, nature, mood, features
IconProps Interface: Consistent size, color, strokeWidth across all icons
Settings Store: userName field for personalization
Encrypted Storage: Secure data persistence for sensitive info
Icon Categories: Navigation, Actions, Communication, Health, Nature, Mood
Build Verified: Android APK compiles and runs successfully

v3.5 - Design System Features

36 Unified Screens: Every screen now uses centralized design tokens
Semantic Colors: Teal, purple, green, amber, rose, slate palettes
Typography System: 12+ presets from display to caption
30+ SVG Icons: Custom-designed, consistent icon library
Glassmorphism: Frosted glass effects throughout
Spring Animations: Organic, physics-based motion
WCAG 2.1 AA: Full accessibility compliance
8pt Grid: Consistent spacing system
Elevation System: Layered shadows for depth
App Grade: A (93/100) - World-class quality

v3.4 - CBT Program Features

12-Week Program: Evidence-based CBT curriculum in 6 structured modules
Module 1: Understanding Anxiety - 5 lessons on the science of anxiety
Module 2: Thought Awareness - Identify automatic thoughts and patterns
Module 3: Cognitive Restructuring - Challenge and reframe unhelpful thoughts
Module 4: Behavioral Experiments - Test anxious predictions
Module 5: Exposure Techniques - Gradually face fears with confidence
Module 6: Maintenance - Build your personal toolkit for the future
Beautiful UI: Glass-morphism cards, smooth animations, progress rings
Progress Tracking: Day streaks, completion percentages, time spent
Lesson Types: Read, Exercise, Reflection, and Quiz content
Research-Based: Meta-analysis shows Hedge's g = 0.78 for digital CBT

v3.3 - Voice + HRV Features

Voice Guidance: Warm voice speaks during SOS: "I'm here with you", "Breathe in... 4... 3..."
HRV Biofeedback Screen: Train heart-brain coherence with real-time feedback ring
Coherence Training: Research shows 40% anxiety reduction with HRV biofeedback
Resonance Breathing: 6 breaths/min pattern maximizes heart rate variability
320px Breathing Circle: Larger, more visible during crisis (per D.14.6 spec)
Nature Crossfade: Gentle transition to calm scene on completion
Session Stats: Peak coherence, average coherence, HRV tracking
TypeScript Fixes: Resolved all build errors for stable app

v3.2 - Features

Encouraging Words: Rotating words during breathing: "You're doing great", "This will pass", "You are safe"
Bible Verses: If Christianity enabled, shows scriptures: "Cast all your anxiety on him..."
Real "I Need More Help" Options: Not just a loop - 4 meaningful choices
Call Someone: One-tap to call your primary contact when exercises aren't enough
Sound Sanctuary: Jump to frequency therapy for a different approach
Comfort Mode: Luna breathes with you - NO demands, just peaceful presence
Continue Breathing: More cycles (5 instead of 3) with rotating encouragement
Rotating Affirmations: In comfort mode: "You are loved", "This feeling is temporary"

v3.1 - SOS System Rebuilt

5-Phase Progressive Flow: Acknowledgment → Breathing → Grounding → Check-in → Exit
Contacts ALWAYS Visible: One-tap call to Mom/Dad/Friend at bottom
Pre-Written Messages: Text button sends "I'm having a panic attack..." automatically
988 Crisis Line: Prominent one-tap access
Large Text: 48pt phase labels, 72pt countdown - readable during panic
Strong Haptics: Synced with breathing phases

Design Philosophy (D.14.6 Specification)

ONE action per screen: No choices when struggling
Auto-advance: Continues if user doesn't tap
Voice-ready design: Works with eyes closed (haptics)
No red colors: Calming blue/green palette throughout
Zero typing required: Pre-written emergency messages
Loop until better: Not just one 60-second breathing exercise

Previous Features (Still Included)

Sound Sanctuary: Frequency therapy with visual entrainment
4 Sound Sessions: Calm (6 Hz), Focus (10 Hz), Sleep (3 Hz), Brain Health (40 Hz)
App Guide: Comprehensive user manual in Settings
Discovery Tips: Rotating educational hints on Home screen
Luna - Your glowing companion who breathes with you
4-7-8, Box Breathing, and Physiological Sigh patterns
Immersive backgrounds with animated particles
3-option mood check (Calm, Okay, Anxious)
Progress tracking and streaks
Fully offline - no internet required