Sudoku (PFA)

SECUSO Research Group

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

Ratings and reviews

The best that I found. No ads, great clean user interface. I have one feature request that would make this even better. At a point where I am forced to guess, I would like to be able to do a marker. If later I come across am impossibility, I would like to be able to say "undo to last marker". With multiple markers, this would allow multiple levels of guess work.

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.

I've been using this app since 2016. It's the best Sudoku game I've come across yet. No ads, no internet access needed. Unlimited games, choose your difficulty level, it works flawlessly. Highly recommend! 2021 update. Now the numbers change from blue to green as each number is completely solved. I love this enhancement. My clearing time is definitely helped by this improvement. Thanks to the devs. I didn't think you could improve on an already awesome game but you did. Still my favorite sudoku!

What's new

Fixes a bug leading to crashes on Android 7.