Quit the habit. Keep your privacy.
HourZero is your private companion for breaking a harmful habit — or building a better one. Daily accountability, journaling, craving tools, and calm guidance in your hardest moments. Everything stays on your device. Always.
No accounts · No servers · No tracking
- 🔒 100% offline
- 🚫 No accounts or servers
- 🧠 On-device AI
- 🆔 Face ID lock
Built around what actually makes change stick
Recovery is rarely about willpower alone. HourZero gives you four things that make change last.
A clear reason why
Your personal motivation, referenced throughout the app when it matters most.
Daily visibility
See your streak, sober days, and cravings survived at a glance.
A plan for cravings
One-tap SOS tools for the critical few minutes an urge is at its peak.
A record to learn from
Check-ins and journals reveal the patterns behind your cravings.
Everything you need, one tap away
Daily check-in
A 20-second pulse-check — mood, craving and stress levels, on-track or not — that powers your insights.
Recovery journal
Free-form writing with moods, tags, and search. Speak instead of type with on-device voice dictation.
Craving tracker
Log intensity, trigger, and outcome in seconds — and turn a hard moment into useful data.
Emergency SOS
Guided breathing and urge-surfing to ride out the wave until it crests and passes.
Grounding exercise
Step-by-step sensory anchoring that pulls your mind back into the present.
Streaks & heatmap
Current streak, longest streak, total sober days, and a 30-day heatmap — without all-or-nothing pressure.
Achievements
Badges that mark real milestones, giving you nearer wins to aim for.
On-device AI companion
A supportive guide for reflection and tough moments — running entirely on your phone.
Apple Watch & widgets
Your streak on your wrist and home screen; an urge-surfing timer on the Lock Screen and Dynamic Island.
Track more than one journey at a time — each keeps its own streak, check-ins, cravings, and journal.
See HourZero in action
A calm, focused interface for your hardest moments — and your proudest milestones.
On-device AI companion 
Guided breathing for cravings 
Grounding exercises 
Streaks & 30-day heatmap 
Milestone achievements 
Recovery journal 
20-second daily check-in
Private by design — even the AI
HourZero is fully offline. Your journals, cravings, check-ins, and conversations are stored only on your device. No accounts, no servers, no analytics, no tracking.
When you use the AI companion or personalized content, the model runs directly on your phone — your words are never sent anywhere. That's why it keeps working in airplane mode. Your data leaves the device only when you choose to export it.
- No accounts to create
- No data ever transmitted
- On-device AI, no subscription
- Face ID app lock
- Export your data anytime
This is supportive, not medical, care
HourZero is a supportive tool built on established behavioral techniques. It is not a doctor, therapist, or emergency service, and does not diagnose conditions or give medical advice. If you're struggling with your health, mental health, or thoughts of harming yourself, please contact a qualified professional or your local emergency services right away.
Frequently asked questions
Yes — completely. The app, including its AI features once the model is downloaded, runs without any internet connection.
No. There are no accounts, servers, or analytics. Data leaves your device only if you choose to export it.
No. Every feature works without AI, using hand-written content. The AI is an optional enhancement you control in Settings.
Yes. Use the menu on the Home dashboard to start and switch between multiple journeys.