Probability theory
Directory of the theory of probability
Kirill Sidorov · com.do_apps.catalog_286
- Signature matches the Google Play version Details
At a glance
- Latest version
- v8.5.4 (805040)
- Updated
- Jan 19, 2026 (9 months ago)
- APK size
- 21 MB
- Requires
- Android 4.4+ (API 19)
- CPU support
- Any (no native code)
- Category
- Books & Reference (app)
- Listed since
- Apr 12, 2021 (at least)
- Permissions
- 10 (4 sensitive)
- Website
- do-apps.com
- Developer contact
- [email protected]
About this APK
Probability theory is an app by Kirill Sidorov in the Books & Reference category, listed since at least April 2021. It has no native code, so it runs on any Android processor.
It asks for 10 permissions, 4 of them sensitive, including precise location, approximate location and read shared storage. The app offers in-app purchases through Google Play.
What's new in v8.5.4
Description
From the listing uploaded by “appupdater”.
Security & authenticity
Signing certificate
- Signature matches the Google Play version Checked by the source store on Jan 19, 2026.
- Certificate issued to “Kirill Sidorov” This is the certificate of the Google Play version.
Store checks and file details
- Developer signature verified Jan 19, 2026
- Validated against Google Play Jan 19, 2026
- Signed byCN=Kirill Sidorov, C=RU
- Signing certificate (SHA-1)97:C0:90:78:45:8E:B0:1D:0D:1D:75:E5:0F:68:C1:E2:65:85:BF:D1
- File MD5a357e931509edcd8beafe60a3a27c41c
- 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 (10)
Probability theory requests 10 permissions, 4 of them sensitive.
- Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Full network access android.permission.INTERNET
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- View network connections android.permission.ACCESS_NETWORK_STATE
Required hardware & features
- Basic touch input android.hardware.faketouch
- Location android.hardware.location
- Wi-Fi android.hardware.wifi
Probability theory 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 Probability theory free?
The APK is free to download, but the app offers in-app purchases through Google Play.
Is the Probability theory 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 a357e931509edcd8beafe60a3a27c41c.
