DeltaSleep Android

DeltaSleep

Open-source sleep & snore tracker. Fully offline, no accounts, no data shared

Features & Capabilities

DeltaSleep tracks your sleep phases and snoring — entirely on your device. No
internet connection is ever used. No account required. No data leaves your phone.

WHAT IT DOES
• Detects sleep phases (Awake, Light, Deep) using your phone's movement sensor
• Detects and logs snore events with adjustable sensitivity
• Shows a nightly hypnogram so you can see how you slept
• Exports your data as CSV or JSON — your data stays yours

PRIVACY BY DESIGN
DeltaSleep has no INTERNET permission. It is physically incapable of sending
data anywhere. No analytics. No crash reporting. No telemetry. Everything is
stored in an encrypted local database in your phone's private storage.

HOW TO USE
Place your phone face-down on your mattress, tap Start, and go to sleep. Tap
Stop in the morning to see your results. That's it.

OPEN SOURCE
DeltaSleep is free and open-source software licensed under GPLv3. The full
source code is available on GitHub. You can audit exactly what it does.

PERMISSIONS EXPLAINED
• Microphone — used only for snore detection while the session is active.
Raw audio is never saved.
• Foreground Service — keeps the tracker running reliably while you sleep.
• Notifications — shows the persistent "recording" notification required by
Android for foreground services.

No location. No contacts. No calendar. No network.

User Growth & Download Statistics

App
By:
Nicolai Tufar
Downloads:
-
Version:
0.1.9 Last updated: 2026-06-08
Version code:
10
Creation date:
2026-06-08
Publisher country:
MD MD
Permissions:
  • android.permission.RECORD_AUDIO Very high risk
  • android.permission.FOREGROUND_SERVICE Low risk
  • android.permission.FOREGROUND_SERVICE_DATA_SYNC Low risk
  • android.permission.POST_NOTIFICATIONS Low risk
  • com.android.vending.CHECK_LICENSE Safe
  • io.github.ntufar.deltasleep.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Size:
2.25MB
Email:
nt*****@gmail.com
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Google Play Store
Data ingested on:
2026-06-11
Compare stats and ranking:

Ranking

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.
Developed by:
Nicolai Tufar
Google Play Store
https://play.google.com/store/apps/details?id=io.github.ntufar.deltasleep
Email:
nt*****@gmail.com
Website:
https://ntufar.github.io/DeltaSleep/

Best DeltaSleep Alternatives

Here are some Android apps that are similar to DeltaSleep: