Sandwich Sudoku
Board · Paid · 4.9 out of 5 from 128 ratings
Hand-crafted Sudoku puzzles with a mathematical twist where you sum numbers "sandwiched" between 1 and 9.
Ask the finder — grounded in real reviews:
GenreBoard
PricePaid
Difficultyhard
Ad intensitynone
In-app-purchase pressurenone
Typical sessionlong
DeveloperNick Carney
Rating4.9 out of 5 from 128 ratings
What players like
- Hand-crafted puzzles by World Sudoku Championship competitors
- Well-designed interface with multiple marking tools (colors, corner/center pencil marks)
- Difficulty scaling from easy to extremely challenging
- Hints written by puzzle designers Mark and Simon
- 100 unique puzzles with variety in strategy requirements
Common complaints
- Hints are sometimes cryptic and lack detailed step-by-step explanations
- Corner and center pencil marks change together instead of independently
- No difficulty level indicator when resuming a puzzle
- Battery drain from inefficient Unity engine implementation
- Fixed puzzle list with no progression tracking across devices or iPad orientation lock
What real reviews say
★★★★ I’m hooked! I’m spending way too much time on these, but having a blast! I wish the corner and center pencil marks were separate like they are on classic sudoku app. In this app, if you change one, the other changes too. Might as well not pretend they have different functions.
★ Not Worth It There’s a fixed list of puzzles that don’t seem to be in any particular order, so there’s no way to set up a difficulty or do new puzzles. The interface is completely inscrutable; just a bunch of unlabeled buttons with meaningless symbols. This is clearly a quickly hacked together Unity project me
★★★★★ Give us more puzzles!! The mechanics of this app are beyond fantastic. The puzzles range from rudimentary to challenging. The array of settings provided are plentiful to accommodate any sudoku solver’s needs. I hope they some day create a sequel to the Sandwich Sudoku app!!! I tried the chess sudoku and was let down
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Data: Apple App Store, as of 2026-07-10. Last updated 2026-07-10.