SleepTracker: Watch or Phone

Free forever — no in-app purchases, no catch. Missing a feature from a paid app? Tell me and I'll build it. A gift back to the AI era.

SleepTracker records your sleep automatically with an Apple Watch — or with just your iPhone on the mattress — and turns the night into a clear picture of your stages, heart rate, and recovery. No setup, no account, nothing to configure.

Every feature is unlocked for everyone, permanently. There is no premium tier, no paywall, and no ads — not hidden somewhere in the app, and not planned for a later version.

HOW IT WORKS • Wear an Apple Watch to bed and open the app — sleep stages, heart rate, HRV, and breathing sync straight from Apple Health • No watch? Set your iPhone on the mattress and tap Track Sleep with iPhone — it uses movement and sound to estimate your night • Numbers match the Apple Health app exactly, down to the minute

WHAT YOU GET • Sleep rings that show Sleep, Quality, and Deep at a glance • Full stage breakdown — Deep, REM, Light, and Awake • Bedtime, wake time, time to fall asleep, and sleep efficiency • Readiness, Sleep Fuel, and Recovery scores built from your real HRV • Heart rate, HRV, SpO2, and respiratory rate with Apple Watch • A smart alarm that wakes you in a lighter stage near your target time • Sleep consistency, trends, history, and a calendar of every night • Tags for caffeine, late meals, workouts, and stress, so you can see what actually changes your sleep

WHY IT WILL STAY THIS WAY This is not a trial, and it is not a growth strategy. The app runs entirely on your device: there are no servers to pay for, no company behind it, no investors expecting a return, and no ad or analytics code quietly earning money off you. Nothing here needs a subscription to survive, so nothing here will ever get locked.

I built SleepTracker for myself, in a year when AI finally made building something like this genuinely achievable for one person. Giving it away is the point — my way of putting something back into that.

YOUR DATA NEVER LEAVES YOUR PHONE Sleep and health data is read from Apple Health only after you allow it. Microphone audio is analyzed on your device and is never recorded, stored, or uploaded. There is no account to create, no profile to sell, and no server for anything to be sent to.

TELL ME WHAT TO BUILD See something in another sleep app that you wish this one had? Email mark@vibecode.review. I read every message and I build what people actually ask for — that is how most of this app got here.

Sleep better by understanding your nights, automatically.