Sleep Time - Alarm Calculator app icon

Sleep Time - Alarm Calculator

Sleep Efficiently

Oleg Filimonov · ru.olegfilimonov.sleeptime

Not rated yet 1M+ downloads v1.9.3 7.9 MB Android 4.4+ PEGI 3 · Everyone

  • Signature matches the Google Play version Details

At a glance

Latest version
v1.9.3 (26)
Updated
Jul 24, 2026 (3 months ago)
APK size
7.9 MB
Requires
Android 4.4+ (API 19)
CPU support
Any (no native code)
Category
Productivity (app)
Listed since
Feb 19, 2021 (at least)
Permissions
6
Website
olegfilimonov.com
Developer contact
[email protected]

About this APK

Sleep Time - Alarm Calculator is an app by Oleg Filimonov in the Productivity category, listed since at least February 2021. It has no native code, so it runs on any Android processor.

It asks for 6 permissions, none of them sensitive. The app can read the advertising ID that ad and analytics services use.

Description

From the listing uploaded by “appupdater”.

It is recommended to wake up at the end of a sleep cycle. Sleep Time helps you to calculate when to wake up or fall asleep to sleep efficiently and wake up feeling great. Features: - Simple material design build for speed and efficiency - Calculate when to wake up if you go to sleep now or at a certain time - Calculate when to sleep if you want to wake up at a time - Notifications for when to wake up or go to sleep - Factor in time to fall asleep in calculations If you have any feedback or bug report, please contact me using Feedback tab in the app drawer.

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Jul 24, 2026.
  • Certificate issued to “Oleg Filimonov” This is the certificate of the Google Play version.

Store checks and file details

  • Developer signature verified Jul 24, 2026
  • Validated against Google Play Jul 24, 2026
  • Signed byCN=Oleg Filimonov, O=Oleg Filimonov, L=Saint Petersburg, ST=Saint Petersburg, C=07
  • Signing certificate (SHA-1)D5:81:3E:AE:EA:8A:8D:40:40:CA:2A:03:84:9A:3E:FF:D9:85:3B:2D
  • File MD55c3d20a76fdbc3709862bd02c0116c04
  • Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (6)

Sleep Time - Alarm Calculator requests 6 permissions, none of them sensitive.

Required hardware & features

Sleep Time - Alarm Calculator APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Sleep Time - Alarm Calculator APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. After downloading, check that the file's MD5 is 5c3d20a76fdbc3709862bd02c0116c04.

Tags

More Productivity apps