Comparison

Ultimate Sudoku App vs Crack the Code 4 Watch

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

Head to head
About

Ultimate Sudoku App

Features
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The ultimate sudoku app Features: - Multiple difficulty levels - Smart hints & notes - Multiple languages - Stopwatch to track your time The integrated SAT solver ensures that each new sudoku is truly random and feels different from the previous one, while at the same time giving the ability to provide sudokus with more than one single solution

About

Crack the Code 4 Watch

Features
Read full description

Crack the Code 4 Watch Can you crack the code? Test your logic and deduction skills with Crack the Code 4 Watch, a classic code-breaking game designed for Apple Watch. Enjoy two timeless puzzle games: Mastermind and Bulls and Cows, perfect for quick brain challenges on the go Two Games, One Challenge • Mastermind: Guess the secret code using color feedback. Every attempt brings you closer to the solution. • Bulls and Cows: A number-based deduction game where bulls mean correct digits in the right place and cows mean correct digits in the wrong place. Solve it in as few moves as possible. Designed for Apple Watch • Quick, fun, and challenging logic puzzles • Play anytime, anywhere—right from your wrist • Minimalist interface optimized for small screens Think fast, strategize smart, and crack the code. Download Crack the Code 4 Watch now and put your logic to the test.

Screenshots

Ultimate Sudoku App4 screens

Verdict

The call

The clearest difference is price: Ultimate Sudoku App at Free against Crack the Code 4 Watch's $0.99. Ultimate Sudoku App also leads on update cadence (every 6 days vs every 6 weeks). On ads, in-app purchases, 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

Ultimate Sudoku App is free to download; Crack the Code 4 Watch costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Ultimate Sudoku App ships an update every 6 days, Crack the Code 4 Watch every 6 weeks. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.

Scorecard2 real differences · 4 level
Ultimate Sudoku App versus Crack the Code 4 Watch: the parameters behind the verdict, then further details
ParameterUltimate Sudoku AppCrack the Code 4 Watch
PriceFree — better$0.99
Update frequencyEvery 6 days — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS16.4 — better16.6
Further details — not scored
Size40 MB1 MB
Age rating4+4+
DeveloperMichele YinBolo mobile, Inc

In-app purchases

None

Ultimate Sudoku App

No in-app purchases

None

Crack the Code 4 Watch

No in-app purchases

Questions

Is Ultimate Sudoku App free?
Ultimate Sudoku App is free to download, with no in-app purchases.
Is Crack the Code 4 Watch free?
Crack the Code 4 Watch costs $0.99, with no in-app purchases.
Do Ultimate Sudoku App or Crack the Code 4 Watch have ads?
Neither Ultimate Sudoku App nor Crack the Code 4 Watch shows ads.
Which is updated more often, Ultimate Sudoku App or Crack the Code 4 Watch?
Ultimate Sudoku App ships an update every 6 days, and Crack the Code 4 Watch every 6 weeks. Most recently, Ultimate Sudoku App was updated on October 9, 2026 and Crack the Code 4 Watch on October 4, 2026.

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