Sudoku Solver (en) vs + &
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sudoku Solver (en)
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Dear Sudoku Friend You've found a Sudoku in a Newspaper, that is driving you mad, because it seems to be unsolvable? You want to participate on prize competition found in various Magazines and Newspapers, but you don't have the time to solve each and everyone manually? You have created your own Sudoku and want to check if it can be solved? Then this is your Application. Our 'Sudoku Solver' delivers the requested solution within seconds, just enter the known numbers into the grid and have it solved. If you like you may solve the Sudoku on the device itself using the 'play-mode'. Once you see the solution you can transfer it, where ever needed ;-)
+ &
A strategic puzzle game with a Zen-like feel. Combine numbers based on their color and value to achieve the highest score. Save multiple games simultaneously and unlock special abilities as you progress.
- Strategic number addition and subtraction
- Save and manage multiple games
- Unlockable number swapping ability
- Customizable board and UI colors
- Zen-like gameplay experience
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This is a special game, a bit Zen a bit strategic, take your time but not too much. The rules are two: 1) equal numbers on background of equal color are added 2) different numbers on background of different color are subtracted Tap two numbers, the result will take the place of the second. Make the highest score you can. - you can save the current game and start a new one, so that you can play up to 9 games at the same time. - when you exceed 500 points, you'll be able to swap the numbers of two quartets of different color, dragging one over the other. - customize the colors of the board with 351 different combinations - you can also change the user interface color, light or dark
Screenshots
Verdict
The clearest difference is update cadence: Sudoku Solver (en) at weekly against + &'s every 10 months. + &'s advantage is iOS requirement (12.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Sudoku Solver (en) sells 3 one-off in-app purchases and + & sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Sudoku Solver (en) ships an update weekly, + & every 10 months. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.
| Parameter | Sudoku Solver (en) | + & |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Weekly — better | Every 10 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | xis int. ag | Marco Locatelli |
In-app purchases
Sudoku Solver (en)
- Levels$0.99
- Solverstrategies$1.99
- Complete Version$1.99
+ &
- Change The Number$0.99









