Sleep Cycle: Sleep Tracker v2.1.2141-release
APK · 31.4 MB · version code 2141 · Android 4.1+ · uploaded Nov 22, 2025
- Signature matches the Google Play version Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v4.26.06-production, uploaded Oct 4, 2026 — about 10 months after this one.
- Size: this file is 31.4 MB; the latest is 141.1 MB (109.7 MB larger).
- Android: this version needs Android 4.1+; the latest needs Android 9+. Use this one if your device runs an older Android release.
- The latest version asks for 21 more permissions: Access adservices ad id, Access adservices attribution, Approximate location, View Wi-Fi connections, Activity recognition, Run foreground services, Foreground service data sync, Foreground service location….
File information
- Version
- v2.1.2141-release (2141)
- Uploaded
- Nov 22, 2025
- Size
- 31.4 MB
- Requires
- Android 4.1+ (API 16)
- CPU support
- ARM 32-bit, ARM 64-bit
- Screen
- Small screens and larger
- MD5
- 5f062a90827b5664f8110b1fd0f17ffe
- Signing certificate (SHA-1)
- 50:98:A0:8E:67:3B:DB:91:79:B0:DF:DC:37:23:E7:C7:5D:27:D0:41
- Signed by
- CN=Northcube AB, OU=Unknown, O=Northcube AB, L=Unknown, ST=Unknown, C=SE
- File name
- com-northcube-sleepcycle-2141-72466160-5f062a90827b5664f8110b1fd0f17ffe.apk
- Package
- com.northcube.sleepcycle
- Downloads (all versions)
- 10M+
- Age rating
- PEGI 3 · Everyone
What's new in v2.1.2141-release
INTRODUCING SNORE DETECTION
About a third of all adults snore. Despite getting a full night’s sleep, they don’t know why they’re tired, annoyed, anxious or feel sleep deprived. That’s what poor sleep does to you, and snoring is part of poor sleep. Sleep Cycle now detects and track if and when you snore. This new feature will help you figure out if snoring is one of the reasons you don't feel like you're getting enough sleep, and help you track progress should you decide to tackle it.
Permissions (9)
This version requests 9 permissions, 1 of them sensitive.
- Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
- Control vibration android.permission.VIBRATE
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- Google Play license check com.android.vending.CHECK_LICENSE
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Nov 22, 2025.
- Certificate issued to “Northcube AB” This is the certificate of the Google Play version.
- Same certificate as the 4 other versions checked
Store checks
- Developer signature verified Nov 22, 2025
- Validated against Google Play Nov 22, 2025
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (4 other versions compared). AAPKs doesn't scan files itself.
How to install Sleep Cycle: Sleep Tracker on Android 4.1+
You'll need about 62.8 MB of free space.
- Download the APK — tap Download APK above (31.4 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap com-northcube-sleepcycle-2141-72466160-5f062a90827b5664f8110b1fd0f17ffe.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 5f062a90827b5664f8110b1fd0f17ffe. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open Sleep Cycle: Sleep Tracker — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 4.1+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for ARM 32-bit, ARM 64-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.