Einstein's Riddle is an open-source (GPL-3.0-only) Android game by Sidhant. The APK we host is 8.2 MB, it needs Android 7.0 or newer, and it declares 1 permission.
The file on this page is Einstein's Riddle 1.0.4, 8.18 MB, and it installs on Android 7.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time com.sidhant.einsteinriddle 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 game does.
The manifest declares 1 permission, none of which cover contacts, location, SMS, the camera or the microphone.
Its licence is GPL-3.0-only. We took this build from F-Droid, and the source for this exact version is linked below.
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
- 1.0.4
- Size
- 8.18 MB
- Requires Android
- API 24
- Package
- com.sidhant.einsteinriddle
- Signature checked on
- Sep 17, 2026
- Where this file came from
- F-Droid
- Licence
- GPL-3.0-only
- Source code
- Source for this version
File SHA-256: 21c7d2dbfaa48e79c9e429730b0e43c2431b5f79d17aadf4233507b5586a4c1d
Signing certificate (SHA-256): 18046aeee9d44a9f6d61947fcefceb6dee6cd24067b7a7a9c39c1fe730552a8c
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
- com.sidhant.einsteinriddle.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Screenshots
