oj_helper is an open-source (GPL-3.0-only) Android app by Kano07. The APK we host is 23 MB, it needs Android 5.0 or newer, and it declares 5 permissions.
The file on this page is oj_helper 2.2.0, 23.37 MB, and it installs on Android 5.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time com.example.oj_helper entered the site, and published both the file's SHA-256 and the certificate's fingerprint above so you can check the download yourself. That comparison says the file was not repackaged by someone else; it is not a review of what the app does.
The manifest inside the APK declares 5 permissions, including access to phone state. Android asks you to approve those the first time the app needs them.
Its licence is GPL-3.0-only. We took this build from F-Droid, and the source for this exact version is linked below.
F-Droid, who build and sign this package, flag it: it relies on a network service that is not open source. We pass that on as they recorded it — we have not tested the app ourselves.
We do not show a star rating or an install count for this page: we have no measured figure for either, and a number we cannot source is worth less than an empty field.
- Version
- 2.2.0
- Size
- 23.37 MB
- Requires Android
- API 21
- Package
- com.example.oj_helper
- Signature checked on
- Sep 20, 2026
- Where this file came from
- F-Droid
- Licence
- GPL-3.0-only
- Source code
- Source for this version
File SHA-256: dc499451f430cb43673b6b42a76560edb4fecdb4e1da56b2682e4b3080939ffc
Signing certificate (SHA-256): 9678c10cd02ead2a8d50cb14ca706c7979d6649b7dd36c25f90ee2d3315a36cd
We check that this file carries the same signing certificate as earlier releases of the same package. That shows the APK was not repackaged by someone else — it is not a security review of the app.
Declared permissions
- READ_PHONE_STATE
- INTERNET
- ACCESS_NETWORK_STATE
- ACCESS_WIFI_STATE
- com.example.oj_helper.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
