Comparison

Sudoku Kids vs Mathstack

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Sudoku Kids

This game introduces children aged 4 and up to the logic of Sudoku with a simplified 4x4 grid. It offers rewards for correct solutions and features unlockable levels to playfully enhance attention and concentration. The experience is ad-free and free of in-app purchases, focusing on success without time pressure.

Highlights
  • Simplified 4x4 Sudoku grid
  • Rewards for correct solutions
  • Unlockable levels with new tasks
  • Promotes attention and concentration
  • Ad-free and no in-app purchases
  • No time pressure
  • Visual representations
Features
Read full description

Sudoku Kids is a Sudoku game for children ages 4 and up. It's a small Sudoku starting with four rows and columns. There is a reward for every correct solution. The game has several levels with different tasks that can be unlocked. The game playfully promotes attention, perception and concentration in your child. No advertising, no in-app purchases. Just let yourself be surprised! Great animations, new graphics, every game is solvable and motivating. Your child will recognize logical connections and plays successfully, without time pressure. Train your skills! This app is self-explaining, without words. Simple visual representations, fun for small and large, young and old.

About

Mathstack

A unique number puzzle game where you stack cards to form sequences. Strategically use temporary slots to clear the board and uncover hidden cards. Offers three difficulty levels for a tailored challenge.

Highlights
  • Sequence building gameplay
  • Strategic card stacking
  • Temporary slot management
  • Three difficulty levels
  • Uncover hidden cards
Features
Read full description

Mathstack - Sequence Puzzle Love number puzzles? This one's different. Stack your way to victory by building sequences from 1 to 15 (or 15 to 1) across five colorful stacks to clear the board. The catch? There are more cards than space on the board. Think ahead, use your temporary slots wisely, and plan your moves to uncover the cards you need. Three difficulty levels to match your mood: - Easy (1-5) for a quick brain break - Medium (1-10) for a solid challenge - Hard (1-15) for number-crunching pros Simple to learn. Tricky to master. Impossible to put down. Terms of Service: https://hazerim.com/terms-of-service/ Privacy Policy: https://hazerim.com/mathstack/privacy-policy/

Screenshots

Sudoku Kids4 screens
Mathstack4 screens

Verdict

The call

The clearest difference is price: Mathstack at Free against Sudoku Kids's $1.99. Mathstack also leads on rating (5.0 vs 3.0) and update cadence (every 11 days vs every 120 months). Sudoku Kids's advantage is in-app purchases (none vs 3) and ads (none vs shown). On ratings volume, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Mathstack is free to download; Sudoku Kids costs $1.99 up front. Mathstack sells 3 in-app purchases, starting at $1.99 per 7 days. Sudoku Kids asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Mathstack holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

Sudoku Kids ships an update every 120 months, Mathstack every 11 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard6 real differences · 4 level
Sudoku Kids versus Mathstack: the parameters behind the verdict, then further details
ParameterSudoku KidsMathstack
Price$1.99Free — better
Rating3.0 (2 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings2 — better1
Update frequencyEvery 120 monthsEvery 11 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size17 MB31 MB
Age rating4+12+
DeveloperCHHBHazerim Interactive Entertainment, UAB

In-app purchases

None

Sudoku Kids

No in-app purchases

3 purchases

Mathstack

Subscriptions2
  • No Ads (Weekly)3 Days trial$1.997 Days
  • No Ads (Monthly)$5.991 Month
One-time1
  • No Ads (Lifetime)$19.99

Questions

Is Sudoku Kids free?
Sudoku Kids costs $1.99, with no in-app purchases.
Is Mathstack free?
Mathstack is free to download, with in-app purchases available.
Which has better reviews, Sudoku Kids or Mathstack?
Mathstack is rated higher. Sudoku Kids averages 3.0 out of 5 from 2 ratings, while Mathstack averages 5.0 from 1 ratings.
Do Sudoku Kids or Mathstack have ads?
Mathstack shows ads; Sudoku Kids does not.
Which is updated more often, Sudoku Kids or Mathstack?
Sudoku Kids ships an update every 120 months, and Mathstack every 11 days. Most recently, Sudoku Kids was updated on November 1, 2026 and Mathstack on October 30, 2026.

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