# Bubble Sudoku — Daily color puzzles that teach > Color-based Sudoku puzzles with educational hints and daily challenges. (iPhone/iPad app by Pop Logic Studios LLC.) - Source: https://appshunter.io/ios/app/bubble-sudoku/id6813743178 (this page in markdown: same URL + `.md`) - Developer: [Pop Logic Studios LLC](https://appshunter.io/developer/6813743180) - Category: Games, Board, Puzzle - Price: Free with in-app purchases - Rating: 5.00/5 from 4 App Store ratings - Age rating: 4+ - Requires: iOS 15.1 · 54 MB - Languages: American English, French (France), German (Germany), Japanese, Brazilian Portuguese, European Spanish - Released: 2026-10-05 - Data updated: 2026-10-31 - Monetization: free with in-app purchases ## What is Bubble Sudoku? Sudoku, played in color. Bubble Sudoku uses the rules you already know, with nine colorful bubbles in place of numbers 1 through 9. Every row, column, and block holds all nine colors, once each. The same sudoku logic, but color makes it feel new. When you get stuck, the app teaches you instead of just filling the cell. HINTS THAT TEACH A hint names the technique that solves the cell, then explains it in plain language. Every step animates on your live board. You see which bubbles rule out which colors, and why only one can go in that cell. Hints always walk you through the easiest technique available, so you learn as you play. 15 TECHNIQUE LESSONS, AND GROWING The library runs from Full House and Obvious Single up to Pointing Pairs, Hidden Triples, X Wing, and Swordfish. Every lesson walks through a real board one step at a time, so you can see the position before and after the move. Read them any time, not just when you are stuck. FAIR DIFFICULTY LEVELS Easy, Medium, Hard, and Expert are graded by the techniques a board actually requires. Every puzzle is designed to be solved using the techniques the app teaches. No board asks you to guess. NOTHING HERE RUSHES YOU Hide the timer and the clock leaves the board. Turn Auto Check Mistakes off and a wrong bubble will not cost you a life, so a puzzle can never end before you are ready. Sound, vibration, and the completion wave each have their own setting, so you can make the game as quiet as you want. There are no leaderboards and no other players. The only record you are up against is your own. YOUR BOARD IS ALWAYS WAITING Play for two minutes while you wait, or for an hour on the couch. Your board saves itself, and it is exactly where you left it when you come back. There is no account and no sign-up, and the puzzles work offline. DAILY CHALLENGES, TROPHIES, AND BADGES A new challenge arrives every day on the calendar. Finish a full month and you earn that month’s trophy. Badges track the rest, from your first Expert win to a perfect game solved with no hints. Every trophy and badge is drawn by hand. SETTINGS FOR HOW YOU PLAY Notes, Undo, and Erase. Auto Check Mistakes flags the wrong bubble as you place it, and Highlight Identical lights up every cell holding the color you picked. Two input styles: tap a cell and then a bubble, or tap a bubble and then the cells. Light and dark mode, or set it to Auto to mirror your phone. Colorblind Symbols adds a distinct symbol to every bubble color, so no move on the board depends on telling colors apart. Detailed statistics for every difficulty, so you can see where you are getting faster. Whether this is your first sudoku or your ten-thousandth, Bubble Sudoku will leave you a little sharper. Your first puzzle is ready when you are. Bubble Sudoku is free, with ads. Bubble Sudoku Plus is a one-time purchase that removes them and makes hints unlimited. It never expires. Bubble Sudoku was designed and built by one person. The puzzle engine, the fifteen lessons, and every hand-drawn trophy and badge. Owned and operated by Pop Logic Studios, a one-woman studio. ## Key features - Color-based Sudoku gameplay - Interactive hints that teach techniques - 15 technique lessons - Fair difficulty levels (Easy to Expert) - Offline play - Daily challenges, trophies, and badges - Customizable settings for gameplay ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Bubble Sudoku Plus | $9.99 | one-time | ## Is Bubble Sudoku safe? Not enough ratings yet to assess Bubble Sudoku. ## Is Bubble Sudoku legit? Bubble Sudoku has limited verification signals. The AppsHunter Legitimacy Score for Bubble Sudoku is 58 out of 100 points across 7 verification signals from App Store and developer data. ## Frequently asked questions about Bubble Sudoku ### Does Bubble Sudoku have ads? Yes, Bubble Sudoku contains advertisements. There is a premium version, Bubble Sudoku Plus, available as a one-time purchase that removes ads and offers unlimited hints. ### How does Bubble Sudoku teach techniques? When you get stuck, Bubble Sudoku provides hints that name the technique, explain it clearly, and animate the solution on your live board. This allows you to learn as you play. ### What are the difficulty levels in Bubble Sudoku? Bubble Sudoku features Easy, Medium, Hard, and Expert difficulty levels. These are graded based on the specific techniques required to solve each puzzle. ### Can I play Bubble Sudoku offline? Yes, Bubble Sudoku works offline. Your game progress is saved automatically, and you can play for as little as two minutes or for longer sessions without needing an internet connection. ### What kind of daily content does Bubble Sudoku offer? Bubble Sudoku provides a new challenge every day on its calendar. Completing a full month earns you that month's trophy, and various badges are awarded for achievements like winning an Expert game or solving a perfect game without hints. ### What are the customization options in Bubble Sudoku? You can customize settings like Notes, Undo, Erase, Auto Check Mistakes, and Highlight Identical. Input styles, light/dark mode, and colorblind symbols are also available to tailor the experience. ### Is Bubble Sudoku suitable for all ages? Bubble Sudoku has an age rating of 4+, making it suitable for younger players. The game's logic and colorful presentation are designed to be accessible and engaging. ### How often is Bubble Sudoku updated? The latest version of Bubble Sudoku is 1.1.0, last updated on October 25, 2026. The game is actively developed, with the technique lesson library growing. ## Version history (last 2 releases) ### 1.1.0 — 2026-10-25 Updates and improvements for user experience. ### 1.0 — 2026-10-05 No release notes. ## Apps similar to Bubble Sudoku | App | Rating | Price | Category | | --- | --- | --- | --- | | [DotLink Connect Color Dots](https://appshunter.io/ios/app/dotlink-connect-color-dots/id6793929195) | — | Free | Games | | [Facet: Gem Art Coloring](https://appshunter.io/ios/app/facet-gem-art-coloring/id6782476999) | 5.0 (5) | Free | Games | | [FishDoku: No Ads Sudoku Game](https://appshunter.io/ios/app/fishdoku-no-ads-sudoku-game/id6808062577) | 5.0 (7) | Free | Games | | [Princess Coloring Offline](https://appshunter.io/ios/app/princess-coloring-offline/id6747383237) | — | Free | Games | | [Cube It Together](https://appshunter.io/ios/app/cube-it-together/id6740765168) | — | Free | Games | | [Tap Flow: Block Out](https://appshunter.io/ios/app/tap-flow-block-out/id6757078184) | — | Free | Games | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-31.*