Sudoku World: Friend Challenge is a puzzle app developed by VINDecoded.com.
Download Statistics
Sudoku World: Friend Challenge has been downloaded 43 thousand times. In the last 30 days, the app was downloaded 740 times.
User Ratings
Sudoku World: Friend Challenge is rated 4.38 out of 5 stars. The rating is based on 220 ratings.
App Information
Sudoku World: Friend Challenge is FREE to download. The APK download size is 10.21 MB. The latest version available is 2.74. The last update was on August 29, 2026.
Technical Requirements
Sudoku World: Friend Challenge requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play July 2020.
Description
Same Sudoku. Same rules. Different solver.
Sudoku World turns a timeless logic puzzle into a fair friend challenge. Finish a board, share a link, and let a friend play the same Classic or Killer Sudoku on their schedule. Compare score, time, mistakes, and hints without needing a public profile.
FRIEND CHALLENGES BUILT FOR REAL LIFE
• Share one private link; your friend has seven days to play • Choose whether teaching hints are allowed • Play with no mistake cap or a three-mistake limit • Compare both results under the same scoring rules • Rematch whenever you are ready
RACE A PRIVATE GHOST
Turn on Ghost Race to see the challenger’s recorded pace move across the board. It shares cell locations and timing only, never entered numbers, pencil notes, candidates, or the solution. The final result stays hidden until the puzzle is finished.
DAILY PUZZLES AND WORLD JOURNEY
Build a Daily streak with fresh Classic and Killer boards, or catch up on the previous six days. First wins earn Journey points that unlock eight destination-inspired themes.
12,000+ INCLUDED PUZZLES
Choose Fast, Easy, Medium, Hard, or Expert Classic Sudoku, plus Killer Sudoku from Easy through Expert. Included boards remain available offline after initialization; friend challenges, account continuity, notifications, rankings, and Journey awards require a connection.
TOOLS FOR A THOUGHTFUL SOLVE
• Pencil notes, unlimited undo, and auto-save • Teaching hints that explain the next logical step • Optional auto-check and duplicate highlighting • Personal statistics, best times, and progress
BUILT FOR FOCUS AND CHOICE
Play as a guest, or optionally link Google or Facebook to continue supported progress. Rewarded ads are optional, and full-screen ads never interrupt a puzzle in progress. Review available advertising consent controls from Settings → Privacy choices. Delete your Sudoku World account and synced data directly from Settings whenever you choose.
Whether you are protecting a Daily streak, learning a technique, or settling a friendly rematch, Sudoku World gives every solve somewhere to go.
Recent changes: Improved Daily Challenge rankings and celebrations, with reliability and privacy improvements.
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Comments on Sudoku World: Friend Challenge for Android
★★★★★Denise Branham· Mar 20, 2022
This is for. The 'killer Sudoku" version. I was so happy to find that if I used the "notes button" it didn't keep my last number and put it in on the next block I highlighted. On several OTHER Sudoku game makers this has given me an error. Also, the level of game you choose is more accurate than others. Another plus is I can see all the numbers, even the total for an area WITHOUT my glasses or a magnifier!!! THANK YOU.
★★★★★Thresia Thompson· Oct 30, 2020
If you want to push yourself and keep your brain sharp, you need to play this, Sudoku game. I live it
★★★★★Dianne Kocer· Oct 29, 2020
Allows you to put potential numbers in even if there is a conflict. That is unlike some sudoku puzzles which warn you if there is a conflict. That makes the game much less challenging. This is like a paper puzzle without the hassle.
★☆☆☆☆Janice Mears· Aug 8, 2023
I am spending more time on ads than the game.
★★☆☆☆Brandy Wine· Jan 13, 2021
Only 2 stars because the Sudoku-puzzle is supposed to be the only difficult aspect of this app! Unfortunately, I also found my large hands, trying to navigate this small layout successfully, stole quite a bit of my concentration away from the puzzle. Super frigged annoying when you tap...tap...tap an "8", three times in a row, and a stink'n "9" appears!?!🤬🤯🤮😡... On the good side, 😇 you created an otherwise excellent product! Please, make it LARGER. God bless
★★☆☆☆Chris Smith· Jun 27, 2025
Theme settings are needlessly complicated. Can't get night theme to stick. And how do you get the general UI in dark theme? Frustrating :/
★★☆☆☆LadyRed Oliver· May 20, 2023
Never get to me to what I asked for more adds than correct math answers numbers
Google Play Rankings for Sudoku World: Friend Challenge
This app is not ranked
Technologies used by Sudoku World: Friend Challenge
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