One vs Count Up! Calc
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
One
Read full descriptionHide full description
Experience the thrill of stimulating your brain with our new One-Stroke Puzzle Game! Simple yet profound, dive into the fun of one-stroke puzzles with this exciting game. - Enjoy One-Stroke Fun**: Draw with just a swipe of your finger in this simple, intuitive puzzle game. Play anywhere, anytime. - Abundant Stages**: With over 1000 stages available, you'll never run out of challenges and endless fun. - Beginner-Friendly**: Equipped with a comprehensive hint system, even puzzle game novices can play with confidence and gradually improve. - Challenge the Highest Difficulty**: The most difficult stages are among the toughest in puzzle games! It's a perfect opportunity to test your wits and skills to the fullest. This game is designed for all puzzle enthusiasts, from adults to children, beginners to advanced players. Use your brain and enjoy the easy-to-play yet intellectually stimulating one-stroke puzzles, making your free time more fulfilling.
Count Up! Calc
Read full descriptionHide full description
[A Fun New Math Game Appears!] Controls are a breeze: just tap the moving math symbols! Calculate repeatedly to reach the goal number. Even though it's a math puzzle, you can grab items and choose from 3 power-ups. Do that, and you can control the math exactly how you want! Before you know it, you might just get completely obsessed! [How to Play] Touch the math symbols moving across the screen! That symbol will then calculate the two numbers in the center. Calculating creates new numbers and symbols, so touch them again to calculate with your previous answer. The appearing numbers and symbols are random, so there's no single set answer! Calculate over and over to create your target number. If your calculated number is a "Multiple of 10" (10, 20...), "Ends in 7" (7, 17...), or has "Matching digits" (11, 22...), you can get an item, or "Keep" a symbol in the top right corner to use whenever you want! There's also plenty of support during the game! Check the "Next" display for upcoming symbols and numbers. Use the "Shuffle" button to change your Next items! When the screen is full of the same symbol, an item appears that lets you summon that symbol later. If the screen gets cluttered with items, use the bottom left buttons to toggle the display or shake them up. [Game Modes] There are two game modes: "Calc30", a light mode where you calculate to make 30, and "Calc-Trip!", where you make multiple numbers in any order you like. In "Calc-Trip!", 3 choices appear every time you make a number! You can power up by changing numbers, symbols, or getting items. As you advance through stages, special gimmicks trigger when certain numbers are made. Sometimes it makes your next moves harder to read, and sometimes it makes them easier. Challenge yourself with all kinds of calculations! [Recommended for] Highly recommended even if you're not good at math! You don't need to get the right answer on the first try here! Use items, calculate repeatedly, and you might just become a math pro?! And of course, highly recommended for those who already love math! Pick the right power-ups, overcome the gimmicks, and aim for a new clear-turn record! The tutorial (for Calc30 mode) comes in a quick Short version, as well as a detailed Long version. It also supports a wide range of 13 languages, and lets you switch between region-specific symbols like × and *, or ÷ and /. Math is a universal language—let's all enjoy it together! Come fall down the fun math rabbit hole!
Screenshots
Verdict
The clearest difference is update cadence: Count Up! Calc at every 4 weeks against One's every 5 months. On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
One ships an update every 5 months, Count Up! Calc every 4 weeks. The most recent releases landed on October 9, 2026 and October 13, 2026 respectively.
| Parameter | One | Count Up! Calc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 4 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 138 MB | 273 MB |
| Age rating | 4+ | 4+ |
| Developer | RieveldtGames | MICHIKO MATSUMOTO |
In-app purchases
One
No in-app purchases
Count Up! Calc
No in-app purchases









