425 reviews
Content rating
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Screenshot image
Screenshot image

About this game

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
Updated on
Jun 2, 2021

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
425 reviews
Junk Mail
November 11, 2020
Great app. I really appreciate the dark theme. Please consider adding a switch for it in settings, that offers a switch for the mode, on the game face. Users would be able to one-click toggle it, while non-users wouldn't see an intrusion. Also, please improve the highlighted box tool. The yellow highlight over black surface is much more difficult to link together visually, so I'm not using dark mode yet but I want to. Thx =)
3 people found this review helpful
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A Google user
December 27, 2018
Love the fact that this app requires no permissions and would gladly even pay for it. Downside is on the two hardest settings, many times the puzzles are not solvable without guessing after getting so far. Even with adding notations, you essentially need to remember when you started guessing and then if you guessed wrong, hit undo until you started the guess and then change it. IMO, it takes the fun out of it.
10 people found this review helpful
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Kyle Senk
December 18, 2022
Best Sudoku app on the Play Store. No ads, 3 different modes with 4 different difficulties, there's a dark mode, and I can see all my stats. I just focus on how I play without being interrupted. I would honestly pay more for this app if I could because it is worth the time for any beginners out there. Just top notch.
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What's new

Fixed daily sudokus not being displayed in the correct order