336 hours. That's how long it takes to break free from nicotine — completely and permanently.

336 is a cold turkey quit smoking and vaping app built on clinical science, not motivational fluff. Every hour of your 14-day detox is mapped with real pharmacological data: what nicotine is doing in your body, what withdrawal symptoms to expect, and when they typically peak and fade.

No nicotine replacement. No patches. No gum. No gimmicks.

This app is for people who are done. You quit, and 336 tracks your body's recovery hour by hour.

How it works

• Tap "I Quit Now" and your 336-hour countdown begins
• Each hour shows clinical data: nicotine blood levels, carbon monoxide clearance, receptor recovery, and neurotransmitter normalization
• Track your progress through 4 distinct phases of withdrawal and recovery
• The Battle Map gives you a bird's-eye view of all 14 days — see how far you've come and what's ahead

The four phases

Phase 1 — Acute Withdrawal (Hours 1-72). Nicotine leaves your blood within 48 hours. Carbon monoxide clears in 24. These are the hardest hours, and 336 walks you through every one.

Phase 2 — Peak Symptoms (Days 4-7). Cravings often peak while your body is already healing. Lung cilia begin regenerating. Circulation improves measurably.

Phase 3 — Turning Point (Days 8-10). Withdrawal symptoms typically drop. Most cravings last under 3 minutes. Your brain is rewiring.

Phase 4 — Consolidation (Days 11-14). Nicotinic receptors downregulate toward baseline.

SOS breathing

When a craving hits, the SOS button launches a 60-second guided breathing exercise based on paced-breathing research. No articles to read, no community posts — just breathe.

Built for quitters

• Supports vaping, cigarettes, pouches, and other nicotine products
• 336 hourly clinical updates
• Smart notifications that match your current withdrawal phase
• OLED-black interface designed for midnight cravings
• No account required — your quit date stays on your device
• Free to start. Optional subscription: 336 Weekly ($9.99/week, 3-day free trial) or 336 Annual ($99.99/year) unlocks unlimited retries and premium audio briefings.

336 is a cessation aid. It is not a medical device. It does not sell, promote, or glorify tobacco or nicotine products. If you have a medical condition or are pregnant, consult a healthcare professional before attempting cessation.

Privacy: https://quit336.com/privacy
Terms: https://quit336.com/terms
Support: https://quit336.com/support

336: Quit Smoking Vape Tracker