Now available for Android

Know when your
baby is crying

Your phone listens so you don't have to stay awake. Get alerted the moment crying starts — and find out if they're hungry, tired, or in pain.

Coming soon to App Store
Free download Android APK
No data collected
Works offline
Free, always
9:41 ●●● 100%
🍼
CryBaby
Listening
😮
Detected state
Crying — Hungry
480 Hz · rhythmic · 1.4s cadence
Live audio
dominant: 480 Hz · rms: 0.72
Recent events
Crying — Hungry 02:14
Crying — Tired 00:47
Silence 00:03
3 states
Hungry, Tired, Pain — each with distinct audio patterns
0 ms
Network latency — everything runs on your device
60 fps
Audio analysis rate via Web Audio API + requestAnimationFrame
0 bytes
Data uploaded — no backend, no account, no cloud

Features

Works when you're
half asleep

Big text, instant answers, no account, no setup. Open it and it just works — even offline at 3am.

🎙

Real-time mic analysis

Samples audio continuously and runs FFT analysis every frame — no delays, no buffering, no waiting.

📊

Live waveform display

See the audio being captured in real time. Always know the mic is active and actually listening.

🔔

Push notifications

Get alerted the moment crying is detected — even if your screen is off, locked, or the app is in the background.

📋

Cry event log

Timestamped history of every cry event with type and duration. Last 10 events saved to your device.

🎚

Sensitivity slider

Tune detection to match your room. Quiet nursery or noisy household — adjust until false positives vanish.

📱

Installable as an app

Add to your home screen like a native app. Loads instantly, works fully offline. No app store required.

Detection

Knows why they're
crying too

Not just "baby is crying" — it tells you what kind. So you know what to do before you even get to the crib.

😮
Crying — Hungry
Rhythmic, repetitive cry with a steady medium-pitch pattern. The most common nighttime alert.
400–600 Hz  ·  1–2s cadence
😪
Crying — Tired
Whiny and slower, with a rising pitch contour that builds gradually over time.
300–500 Hz  ·  slow rhythm
😣
Crying — Pain
Sudden high-pitch spike with sharp amplitude onset — distinctly different from hunger or tiredness.
>800 Hz  ·  sudden onset
🔇
Silence / Background
No significant cry pattern detected — silence or ambient noise only. No alert fired.
Below threshold

Never miss a cry again

Download for Android

iOS App Store coming soon  ·  See all features