Sleep stages
See every stage of your night
A clear timeline of Awake, REM, Light, and Deep — alongside your sleep score, time asleep, and efficiency. Understand your nightly patterns and wake up refreshed.
For iPhone · Private by design
Sleep better.
Privately.
Sleepr analyses your sleep on-device with AI. Your audio never leaves your phone — and you wake up with a clearer picture of how you slept.
- On-device AI
- No audio uploads
- No account needed
- Free to download
What Sleepr does
Everything you need for better nights
Four screens, one calm picture of your sleep — built around what actually happens while you rest.
Sleep recordings
Hear what happens while you sleep
Sleepr listens on-device and surfaces the moments that matter — snore clips, sleep talking, and quiet nights. Replay the night events and discover what you never knew.
Daily routine
Build better habits, one night at a time
Small, science-backed habits add up. Track caffeine cut-offs, morning sunlight, screen-free wind-downs, and a consistent bedtime — then watch your streak grow.
Smart alarm
Wake up at the right moment
Set a smart wake window and Sleepr nudges you awake during a lighter phase of your cycle — so mornings feel gentle instead of jarring.
On-device intelligence
Your own sleep AI,
running on your iPhone.
Sleepr listens with a custom machine-learning model that identifies the sounds and patterns of your night — and it all happens locally, on your device. Your audio never touches a server.
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A model built for sleep
Sleepr's own machine-learning model was trained to recognise the specific sounds of a night — snoring, sleep talking, coughing, and movement — not generic audio.
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Inference on your device
Every sound is classified in real time by your iPhone's Neural Engine. No servers, no round-trips — it even works in airplane mode.
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Audio is never stored or sent
The microphone stream is analysed and immediately discarded. There is no recording to upload, leak, or subpoena — only the labels you see.
Our privacy promise
- No audio recordings ever leave your iPhone
- No account required to start tracking
- No third-party analytics on your sleep data
- Open about exactly what syncs — and only when you choose
The Sleepr difference
Your microphone stays on your phone.
Most sleep apps upload your audio for analysis. Sleepr doesn't. Every snore, cough, and movement is processed in real time on-device — there is no audio recording to upload, leak, or subpoena. The only thing leaving your phone is the sleep summary you choose to sync.
Private by design, by the numbers
Built around your privacy
Private
100%
Analysis on your device
Always
0
Audio files ever uploaded
No account
Free
To download & start tracking
Optional
Pro
AI coach & advanced trends
Why people switch
Built for better nights
Private by design
On-device microphone analysis. Audio is processed in real time on your iPhone and never uploaded to any server.
Smart event detection
Detects snoring, talking, coughs, and movement throughout the night — without sending audio anywhere.
Somnus, your AI sleep coach
Chat with an AI coach that understands your patterns and helps you build better habits, night after night.
Trends, streaks & friends
Watch sleep trends across weeks, months, and years. Climb leagues with friends as your streak grows.
Good to know
Questions, answered
Is my audio really private?
Yes. All microphone analysis happens on-device in real time. The audio stream is classified and immediately discarded — there is no recording to upload, leak, or subpoena. Only the labelled summary you see is kept.
Does Sleepr work without internet?
Yes. Tracking and on-device detection run entirely on your iPhone's Neural Engine, so it keeps working even in airplane mode. Only the sleep summary you choose to sync ever uses the network.
Do I need an Apple Watch?
No wearable required. Sleepr uses your iPhone's microphone and motion sensors — just place your phone near your bed before you sleep.
Is Sleepr free?
Sleepr is free to download and track your sleep. Sleepr Pro unlocks the Somnus AI coach and advanced long-term trends.
Ready to sleep better?
Free to download. Sleepr Pro unlocks the AI coach and advanced trends.
Download on the App Store