STutor vs Sudoku 4000 & Solver
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
STutor
This app assists in solving Sudoku puzzles by offering three levels of hints and employing five logical solving strategies. It allows manual puzzle entry or input via an 81-character string, with options to save, recall, and manage puzzles. The app validates entries against its solution and displays possible numbers for incorrect moves.
- Three levels of hints
- Five logical solving strategies
- Manual puzzle entry
- 81-character string input
- Puzzle saving and management
- Entry validation against solution
- Display of possible numbers
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STutor (for SUDOKU TUTOR) is a no-nonsense sudoku solving APP that can display three level of hints while you are solving a puzzle. There are no AD's; no "in-APP-purchases". Just a program to help you advance your Sudoku solving skills. STUTOR solves puzzles using 5 strategies following a logical sequence of methods. The sequence and methods are described in five (5) HELP screens. STUTOR is most appreciated when it displays clues for solving those pesky Friday/Saturday more advanced puzzles. No more disappointing unsolved puzzles. Puzzles are entered manually in a Sudoku grid or by entering (or pasting) an 81 character string. Puzzles can be saved, recalled, changed, deleted, and reordered in the Archive. Upon pressing any of the bottom buttons (except clr), STUTOR will validate and solve the puzzle. Any subsequent user entries will be compared with the solution. A valid entry is entered into the puzzle. If the entry does not correspond to the solution, all the "possibles" or minis are displayed for that cell. If minis are already displayed, the entered number is removed from the minis. Swiping more that two cells in a row will display minis in the row. Ditto for a column or a group. Swiping through more than two rows, columns or groups will display all minis. The "hint" button toggles between a text only hint and one that also displays a clue on the puzzle. The STEP button displays all hint details and alters the puzzle accordingly.
Sudoku 4000 & Solver
This app offers a vast collection of Sudoku puzzles across four difficulty levels, with a helpful solver feature. It includes tools for note-taking and error correction, plus an auto-save function to preserve your progress.
- 4 difficulty levels
- Hint system
- Notes with auto-fill
- Auto-save
- Undo function
- 19 color themes
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It is a Sudoku with 4 levels (1000 questions each) and solver. Features * 4 difficulty levels * Hint(Get solution from notes) * Notes with auto fill / erase option * Auto-save * Undo * 19 color them
Screenshots
Verdict
The clearest difference is price: Sudoku 4000 & Solver at Free against STutor's $0.99. Sudoku 4000 & Solver also leads on update cadence (every 11 months vs every 28 months) and ratings volume (3 vs 1). STutor's advantage is ads (none vs shown) and rating (5.0 vs 4.7). On review sentiment, 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
Sudoku 4000 & Solver is free to download; STutor costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
STutor holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
STutor ships an update every 28 months, Sudoku 4000 & Solver every 11 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | STutor | Sudoku 4000 & Solver |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 4.7 (3 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 28 months | Every 11 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Robert Carlson | Atsushi Hanai |
Customer experience
STutor
Sudoku 4000 & Solver
In-app purchases
STutor
No in-app purchases
Sudoku 4000 & Solver
No in-app purchases
