Nidra: Snore Analyzer

Chitkala Labs

About this app

Nidra records and analyzes your sleep, completely free -- no subscription, no account, no ads, and no cloud upload. Everything happens on your phone.

HOW IT WORKS
Start recording before you fall asleep. Nidra listens through the night and automatically detects snoring using on-device audio analysis (volume + frequency pattern) -- no internet connection or AI cloud service required. Only the moments you actually snore are saved as short clips, not your whole night, so storage stays small and your audio never leaves your device.

WHAT YOU GET EVERY MORNING
- A Snore Score summarizing the night
- An intensity graph showing when and how loud you snored
- Individual snore clips you can play back
- Automatic sleep position detection (back / side / stomach) using your phone's motion sensor
- Trigger tracking -- log alcohol, tiredness, illness, allergies, stress, or a late meal before bed, and see how they correlate with your snoring over time
- A Trends screen with weekly/monthly history
- One-tap PDF night report you can share, e.g. with a doctor
- Optional gentle vibration nudge if snoring stays loud for a while, to encourage a position change without fully waking you

PRIVACY BY DESIGN
- No account or sign-up
- No internet permission used for your data -- nothing is uploaded anywhere
- No ads, no analytics, no tracking
- All recordings and history stay on your device and are excluded from cloud backup
- Delete any night, or all your history, at any time

Nidra is built for anyone who wants to understand their snoring without paying a monthly fee or handing recordings to a third party.

What’s new

Initial public release of Nidra.

- Free, on-device snore recording and analysis -- no account, no ads, no subscription
- Automatic snore detection with an intensity graph and nightly Snore Score
- Sleep position detection, trigger tracking, and weekly trends
- Shareable PDF night reports
- Your audio never leaves your phone