BreatheFirst
Built entirely by Claude AI — from idea to App Store in days of sessions
iOS App Store
Google Play
Web App Live
Apple Watch
Scroll
The Challenge
Zero to App Store
in days of sessions with Claude
What happens when you give Claude a single prompt and let it build a full,
production-ready cross-platform app — with AI coaching, monetization, a backend,
and native iOS/Android builds — without ever leaving the conversation?
"Zero to App Store in days of sessions with Claude."
A few days • One developer • Three platforms • Real revenue
What Claude Built
Every feature.
Every line. One AI.
From the first breathing animation to the App Store metadata, Claude architected,
coded, and shipped a complete wellness application across every major platform.
🫁
Guided Breathing Engine
Box breathing, 4-7-8, and custom rhythms with animated visual guidance and haptic feedback synced to inhale/exhale cycles.
🤖
AI Mood Coach
Powered by the Claude API — real-time emotional check-ins, personalized session recommendations, and adaptive coaching.
📱
Native iOS App
SwiftUI interface, HealthKit integration, background audio, widgets, and full App Store submission with metadata and screenshots.
🤖
Native Android App
Jetpack Compose UI, tested across 18,925 device configurations, Google Play optimized with adaptive icons and store listing.
💰
Full Monetization
Free for everyone. A few Google AdMob ads in the Android app, kept off every breathing, SOS and meditation screen; none on iPhone or the web.
☁️
Backend & API Layer
Node.js/Express backend, user auth, session persistence, webhook handlers, and a real-time sync layer for cross-device state.
⌚
Apple Watch App
Standalone watchOS companion with Digital Crown breathing control, heart rate monitoring, and haptic breathing prompts.
🌐
Web App
Progressive Web App with offline support, responsive design, and feature parity with native apps — live and accessible.
🧩
9 Capacitor Plugins
Custom native bridge plugins for haptics, HealthKit, notifications, audio, admob, payments, and platform-specific APIs.
By the Numbers
The scale of
one conversation.
Every metric below is the output of a single Claude session — no team, no sprints, no standups.
AI Mood Coach
Claude coaching users
through Claude.
BreatheFirst's AI coach is powered by the Claude API — meaning Claude built an app
that uses Claude to coach the people using it. Inception-level meta.
😌
How are you feeling right now?
Your breathing pattern suggests mild tension. I recommend a 4-7-8 session —
four minutes to reset your nervous system. You've done this before and it
helped. Ready to begin?
· Powered by Claude API
Monetization
Free for everyone.
Kept free by ads.
No paywall and no account. The Android app carries a few Google AdMob ads, kept off every
breathing, SOS and meditation screen; the iPhone app and the web app have none.
📺
Google AdMob
A banner on the Android app's home screens, hidden during every session, and at most one full-screen ad a day between sessions.
Android
"
I gave Claude one prompt and walked away with a fully functional
cross-platform wellness app — live on the App Store and Google Play,
and powered by AI. What took teams of developers months, Claude
did in a single conversation. This is the future of building.
E
Enefiok Usoro
Founder, BreatheFirst • Built with Claude
Peer-Reviewed Research
Built on Science.
Not Vibes.
Every BreatheFirst feature is grounded in published, peer-reviewed research. Here are the six studies behind the app — compiled by Claude, Anthropic's AI.
💨
Stanford University · 2023
< 5 sec
to measurably reduce stress
The Physiological Sigh
One double inhale + long exhale produces immediate measurable decreases in heart rate. The fastest stress reset known to neuroscience.
Balban et al. (2023). Cell Reports Medicine, Stanford University.
⬛
Frontiers in Human Neuroscience
4-4-4-4
the pattern used by special forces
Navy SEAL Protocol
Box Breathing activates the prefrontal cortex while suppressing the amygdala's threat response. Used in combat. Proven in crisis.
Zaccaro et al. (2018). Frontiers in Human Neuroscience, 12, 353.
❤️
Frontiers in Psychology
4.5–6
breaths/min for peak HRV
Heart Rate Variability
Breathing at resonance frequency maximizes HRV — the most validated biomarker of stress resilience. BreatheFirst shows you the proof in real time.
Lehrer & Gevirtz (2014). Frontiers in Psychology, 5, 756.
🧠
European Journal of Social Psychology
66 days
to form an automatic habit
The 66-Day Foundation
Forget 21 days. Clinical research shows 66 days is the real threshold for automatic habit formation. Our milestone system is built around this exact window.
Lally et al. (2010). European Journal of Social Psychology, 40(6), 998–1009.
🔵
European Respiratory Society
3x
faster nervous system shift
Multi-Sensory Design
Audio alone leaves the visual cortex wandering. BreatheFirst pairs haptics with visual breathing to capture full attentional bandwidth and accelerate calm.
Russo et al. (2017). Breathe, 13(4), 298–309.
🌍
World Health Organization
600M
people living with anxiety worldwide
You Are Not Alone
600 million people navigate anxiety daily. Fewer than 25% receive support. Breathing is the fastest proven method to signal safety — no prescription needed.
World Health Organization (2017). Global Health Estimates, Geneva.
Research compiled and verified by Claude · Anthropic · 2026
Peer-Reviewed Research
Built on Science.
Not Vibes.
Every BreatheFirst feature is grounded in published, peer-reviewed research. Six studies. Compiled and verified by Claude, Anthropic's AI.
💨
Stanford University · 2023
< 5 sec
to measurably reduce stress
The Physiological Sigh
One double inhale + long exhale produces immediate measurable decreases in heart rate. The fastest stress reset known to neuroscience.
Balban et al. (2023). Brief structured respiration practices enhance mood. Cell Reports Medicine, Stanford.
⬛
Frontiers in Human Neuroscience
4-4-4-4
pattern used by special forces
Navy SEAL Protocol
Box Breathing activates the prefrontal cortex while suppressing the amygdala's threat response. Used in combat. Proven in crisis.
Zaccaro et al. (2018). Frontiers in Human Neuroscience, 12, 353.
❤️
Frontiers in Psychology
4.5–6
breaths/min for peak HRV
Heart Rate Variability
Breathing at resonance frequency maximizes HRV — the most validated biomarker of stress resilience. BreatheFirst shows you real-time proof.
Lehrer & Gevirtz (2014). Frontiers in Psychology, 5, 756.
🧠
European Journal of Social Psychology
66 days
to form an automatic habit
The 66-Day Foundation
Forget 21 days. Clinical research shows 66 days is the real threshold for automatic habit formation. Our milestone system is built around this window.
Lally et al. (2010). European Journal of Social Psychology, 40(6), 998.
🔵
European Respiratory Society
3×
faster nervous system shift
Multi-Sensory Design
Audio alone leaves the visual cortex wandering. BreatheFirst pairs haptics with visual breathing to capture full attentional bandwidth and accelerate calm.
Russo et al. (2017). Breathe, 13(4), 298–309.
🌍
World Health Organization
600M
people living with anxiety globally
You Are Not Alone
600 million people navigate anxiety daily. Fewer than 25% receive support. Breathing is the fastest proven method to signal safety — no prescription needed.
World Health Organization (2017). Global Health Estimates, Geneva.
Research compiled and verified by Claude · Anthropic · 2026
Available Now
Download BreatheFirst
Free on iPhone, Android and the web.
Free · No account needed
Peer-Reviewed Research
Built on Science.
Not Vibes.
Every BreatheFirst feature is grounded in published, peer-reviewed research. Here are the six studies behind the app — compiled by Claude, Anthropic's AI.
💨
Stanford University · 2023
< 5 sec
to measurably reduce stress
The Physiological Sigh
One double inhale + long exhale produces immediate measurable decreases in heart rate. The fastest stress reset known to neuroscience.
Balban et al. (2023). Cell Reports Medicine, Stanford University.
⬛
Frontiers in Human Neuroscience
4-4-4-4
the pattern used by special forces
Navy SEAL Protocol
Box Breathing activates the prefrontal cortex while suppressing the amygdala's threat response. Used in combat. Proven in crisis.
Zaccaro et al. (2018). Frontiers in Human Neuroscience, 12, 353.
❤️
Frontiers in Psychology
4.5–6
breaths/min for peak HRV
Heart Rate Variability
Breathing at resonance frequency maximizes HRV — the most validated biomarker of stress resilience. BreatheFirst shows you the proof in real time.
Lehrer & Gevirtz (2014). Frontiers in Psychology, 5, 756.
🧠
European Journal of Social Psychology
66 days
to form an automatic habit
The 66-Day Foundation
Forget 21 days. Clinical research shows 66 days is the real threshold for automatic habit formation. Our milestone system is built around this exact window.
Lally et al. (2010). European Journal of Social Psychology, 40(6), 998–1009.
🔵
European Respiratory Society
3x
faster nervous system shift
Multi-Sensory Design
Audio alone leaves the visual cortex wandering. BreatheFirst pairs haptics with visual breathing to capture full attentional bandwidth and accelerate calm.
Russo et al. (2017). Breathe, 13(4), 298–309.
🌍
World Health Organization
600M
people living with anxiety worldwide
You Are Not Alone
600 million people navigate anxiety daily. Fewer than 25% receive support. Breathing is the fastest proven method to signal safety — no prescription needed.
World Health Organization (2017). Global Health Estimates, Geneva.
Research compiled and verified by Claude · Anthropic · 2026
Peer-Reviewed Research
Built on Science.
Not Vibes.
Every BreatheFirst feature is grounded in published, peer-reviewed research. Six studies. Compiled and verified by Claude, Anthropic's AI.
💨
Stanford University · 2023
< 5 sec
to measurably reduce stress
The Physiological Sigh
One double inhale + long exhale produces immediate measurable decreases in heart rate. The fastest stress reset known to neuroscience.
Balban et al. (2023). Brief structured respiration practices enhance mood. Cell Reports Medicine, Stanford.
⬛
Frontiers in Human Neuroscience
4-4-4-4
pattern used by special forces
Navy SEAL Protocol
Box Breathing activates the prefrontal cortex while suppressing the amygdala's threat response. Used in combat. Proven in crisis.
Zaccaro et al. (2018). Frontiers in Human Neuroscience, 12, 353.
❤️
Frontiers in Psychology
4.5–6
breaths/min for peak HRV
Heart Rate Variability
Breathing at resonance frequency maximizes HRV — the most validated biomarker of stress resilience. BreatheFirst shows you real-time proof.
Lehrer & Gevirtz (2014). Frontiers in Psychology, 5, 756.
🧠
European Journal of Social Psychology
66 days
to form an automatic habit
The 66-Day Foundation
Forget 21 days. Clinical research shows 66 days is the real threshold for automatic habit formation. Our milestone system is built around this window.
Lally et al. (2010). European Journal of Social Psychology, 40(6), 998.
🔵
European Respiratory Society
3×
faster nervous system shift
Multi-Sensory Design
Audio alone leaves the visual cortex wandering. BreatheFirst pairs haptics with visual breathing to capture full attentional bandwidth and accelerate calm.
Russo et al. (2017). Breathe, 13(4), 298–309.
🌍
World Health Organization
600M
people living with anxiety globally
You Are Not Alone
600 million people navigate anxiety daily. Fewer than 25% receive support. Breathing is the fastest proven method to signal safety — no prescription needed.
World Health Organization (2017). Global Health Estimates, Geneva.
Research compiled and verified by Claude · Anthropic · 2026
Available Now
Download BreatheFirst
Free on iPhone, Android and the web.
Free · No account needed