STutor vs CountJack
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.
CountJack
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Play blackjack and practice card counting like a pro with CountJack. Test your skills in the classic game of 21, practice Hi-Lo counting, enjoy detailed statistics to track your progress, and customize the casino rules to suit your style. Explore our shop offering a variety of tables and cards. Why CountJack? - Unique card counting trainer with multiple difficulty levels, which will be a challenge even for professional players. - Adjustable casino settings to fit your needs. - Exhaustive statistics allow you to monitor your progress. - A fancy shop with a variety of content that you can buy using in-game currency. - No annoying ads. All ads in the game are optional, so they won't disrupt your enjoyment of the process. Get CountJack for the ultimate blackjack experience!
Screenshots
Verdict
The clearest difference is price: CountJack at Free against STutor's $0.99. CountJack also leads on update cadence (every 2 days vs every 28 months). STutor's advantage is in-app purchases (none vs 5) and ads (none vs shown). On 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
CountJack is free to download; STutor costs $0.99 up front. CountJack sells 5 one-off in-app purchases. STutor asks for nothing beyond the download.
STutor ships an update every 28 months, CountJack every 2 days. The most recent releases landed on September 21, 2026 and May 16, 2026 respectively.
| Parameter | STutor | CountJack |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 28 months | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.1 |
| Further details — not scored | ||
| Size | 2 MB | 64 MB |
| Age rating | 4+ | 17+ |
| Developer | Robert Carlson | Andrey Seleznev |
In-app purchases
STutor
No in-app purchases
CountJack
- 1 coin$0.99
- 5 coins$1.99
- 20 coins$2.99
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- 50 coins$3.99
- 100 coins$4.99
Questions
Is STutor free?
Is CountJack free?
Do STutor or CountJack have ads?
Which is updated more often, STutor or CountJack?
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