Sudoku (PFA)

Privacy Friendly Sudoku Game

SECUSO Research Group · org.secuso.privacyfriendlysudoku

Not rated yet 50K+ downloads v3.2.4 5 MB Android 4.2+ PEGI 3 · Everyone

Download APK 5 MB All versions

Same certificate as the other version checked Details

At a glance

Latest version: v3.2.4 (19)
Updated: Apr 23, 2025 (1 year ago)
APK size: 5 MB
Requires: Android 4.2+ (API 17)
CPU support: Any (no native code)
Category: Puzzle (game)
Listed since: Feb 22, 2021 (at least)
Permissions: 4
Website: secuso.org
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Sudoku (PFA) is a game by SECUSO Research Group in the Puzzle category, listed since at least February 2021. It has no native code, so it runs on any Android processor.

It asks for 4 permissions, none of them sensitive. It asks for the same permissions as version 3.2.3.

What's new in v3.2.4

Disables level generation on the lower difficulties of the new 16x16 sudoku. Adds indicator on how many levels are available.

Description

From the listing uploaded by “appupdater”.

Privacy Friendly Sudoku is a logic puzzle game. The goal is to fill the complete board with numbers. Every number may only occur once in every column, row and subsection. Privacy Friendly Sudoku has three different game modes: 1. a 6x6 game field with 2x3 subsections 2. a 9x9 game field with 3x3 subsections 3. a 12x12 game field with 3x4 subsections For each game mode there are four different difficulty levels, that are not measured by the number of set values but rather by the solving strategies needed to solve the game. The generator always tries to provide a game that has the minimum amount of set values, that are needed to solve the game. Our Privacy Friendly App differs from other applications with respect to two aspects: 1. The Privacy Friendly Sudoku App does not use any permission. 2. The Privacy Friendly Sudoku App completely relinquishes advertisement. Many other free apps in the Google Play Store dazzle annoying advertising and also shortens battery life. You can reach us via Twitter - @SECUSOResearch (https://twitter.com/secusoresearch) Mastodon - @SECUSO_Research@bawü.social (https://xn--baw-joa.social/@SECUSO_Research/) Job opening - https://secuso.aifb.kit.edu/english/Job_Offers_1557.php

Version history

2 versions are listed, going back to v3.2.3.

v3.2.4 LATEST Apr 23, 2025 5 MB TRUSTED v3.2.3 Apr 23, 2025 4.9 MB TRUSTED

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Certificate issued to “Philipp Rack” Not the developer's name (“SECUSO Research Group”). Names in certificates can't be verified, so this alone proves nothing.
Same certificate as the other version checked

Store checks and file details

Developer signature verified Apr 23, 2025
Signed byCN=Philipp Rack
Signing certificate (SHA-1)CE:01:A6:12:18:B9:7A:C4:DE:AA:75:DA:4E:5A:FB:DA:05:9D:FF:20
File MD565532b1f752f307884654e7f108ff053
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 (1 other version compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (4)

Sudoku (PFA) requests 4 permissions, none of them sensitive.

Foreground service special use android.permission.FOREGROUND_SERVICE_SPECIAL_USE
Internal broadcast protection (app-defined) org.secuso.privacyfriendlysudoku.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Run foreground services android.permission.FOREGROUND_SERVICE

Required hardware & features

Basic touch input android.hardware.faketouch

Sudoku (PFA) APK: questions and answers

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

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is the Sudoku (PFA) APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. It is signed with the same certificate as the other version checked. After downloading, check that the file's MD5 is 65532b1f752f307884654e7f108ff053.