Comparison

Chess.clock vs CalculatorZ

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

Head to head
About

Chess.clock

Features
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Take your chess games to the next level with the chess clock app. Precision timing for beginners and grandmasters alike! Features: Easy to use: An intuitive design that gets you straight into the game. Customizable timers: Choose from classic modes (e.g., Fischer, Bronstein, or delay) or create your own. Elegant design: A minimalist interface with clear displays โ€“ perfect for blitz, rapid, or tournament games. Sound and vibration feedback: Stay on top of the clock with every second. Dark mode support: Perfect for long evening games. This chess clock app is built for chess enthusiasts โ€“ simple enough for beginners, yet flexible enough for professionals. Download the app now and elevate your game!

About

CalculatorZ

Features
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CALCULATORZ: A MATH PUZZLE WITH A TWIST Can you reach the target number using a calculator with limited buttons? CalculatorZ turns everyday arithmetic into a fun number puzzle where every choice matters. Each round presents a target number. Use the available digits and mathematical operations to build a calculation that matches it. Reach the target to earn points and keep challenging yourself. THE CHALLENGE - Reach the target number using the calculator keypad. - Choose between different difficulty levels. - Adapt when some number or operation keys are disabled. - Earn points for correct solutions. - Check the Top Scores screen and try to beat your best result. EASY TO LEARN, TRICKY TO MASTER At first, the answer might seem obvious. But what if the number you need is unavailable? What if the operation you planned to use is locked? Find another route to the same target and put your mental arithmetic to the test. A FRESH TAKE ON NUMBER PUZZLES CalculatorZ combines familiar calculator controls with mathematical problem-solving. Instead of simply answering a question, you have to work out which available numbers and operations will get you to the right result. DIFFERENT LEVELS, NEW CHALLENGES Choose your difficulty and put your calculation skills to the test. With fewer available keys, even a simple target can become a tricky puzzle. CHALLENGE YOUR BEST SCORE Every successful calculation counts. Keep solving, build your score, and use the Top Scores screen to see how far you've progressed. WHO IS CALCULATORZ FOR? Whether you enjoy math games, number puzzles, logic challenges, or quick brain-training sessions, CalculatorZ offers a playful way to work with numbers. HOW TO PLAY 1. Look at the target number. 2. Check which digits and operators are available. 3. Build a mathematical expression using the calculator. 4. Match the target to score points. 5. Keep going and try to beat your previous result. Think of a solution. Tap the keys. Hit the target. How high can you score? Play CalculatorZ and take on your next math challenge!

Screenshots

Chess.clock4 screens
CalculatorZ4 screens

Verdict

The call

The clearest difference is ads: Chess.clock at none against CalculatorZ's shown. Chess.clock also leads on update cadence (every 3 months vs every 7 months). CalculatorZ's advantage is iOS requirement (15.0 vs 26.2). On price, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Chess.clock ships an update every 3 months, CalculatorZ every 7 months. The most recent releases landed on October 15, 2026 and October 22, 2026 respectively.

Scorecard3 real differences ยท 3 level
Chess.clock versus CalculatorZ: the parameters behind the verdict, then further details
ParameterChess.clockCalculatorZ
PriceFreeFree
Update frequencyEvery 3 months โ€” betterEvery 7 months
AdsNo โ€” betterYes
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS26.215.0 โ€” better
Further details โ€” not scored
Size2 MB131 MB
Age rating4+4+
DeveloperLukas Paul HeringMekouar Ilyas

In-app purchases

None

Chess.clock

No in-app purchases

None

CalculatorZ

No in-app purchases

Questions

Is Chess.clock free?
Chess.clock is free to download, with no in-app purchases.
Is CalculatorZ free?
CalculatorZ is free to download, with no in-app purchases.
Do Chess.clock or CalculatorZ have ads?
CalculatorZ shows ads; Chess.clock does not.
Which is updated more often, Chess.clock or CalculatorZ?
Chess.clock ships an update every 3 months, and CalculatorZ every 7 months. Most recently, Chess.clock was updated on October 15, 2026 and CalculatorZ on October 22, 2026.

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