Duck's Island vs Count Up! Calc
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Duck's Island
Engage in quick, soothing gameplay sessions with adorable ducks. Challenge wild ducks, power up your team, and decorate your island with collected rewards. Enjoy offline play and a unique duck choice system.
- Quick play sessions (< 5 minutes)
- Soothing duck animations
- Offline play supported
- Challenge wild ducks and bosses
- Duck power-up system
- Home screen decoration with miniatures
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This game is recommended for people looking for a game like this! - Want to play a little during your free time? ⇒ One play session is less than 5 minutes. - Want to be soothed by cute movements? ⇒ Be soothed by the playful movements of the ducks. - Want to play without worrying about data usage? ⇒ You can play even in airplane mode! Duck's Island - Ducks and wild ducks are different!! - Ducks and wild ducks are the same? I won't accept that! - Challenge the wild duck-inhabited island and defeat the boss! Defeat the final boss to earn rewards. As you challenge higher levels, they get stronger! - Wild ducks are tough. Strengthen your ducks with power-ups! The Duck Choice System always forces you to choose from three options. Your choice is the key to victory! (Don't worry, the weapon is a water gun.) - Add a touch of relaxation to your home screen with miniatures Place the rewards (miniature) you bring home on your island to create a relaxing space. Be soothed by the sight of ducks relaxing on the miniature island. Will you be able to claim the title of Number One Duck?!
Count Up! Calc
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[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 in-app purchases: Count Up! Calc at none against Duck's Island's 4. Count Up! Calc also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.0 vs 15.0). On price, ads 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. Duck's Island sells 4 one-off in-app purchases. Count Up! Calc asks for nothing beyond the download.
Duck's Island ships an update every 2 months, Count Up! Calc every 3 weeks. The most recent releases landed on August 20, 2026 and August 17, 2026 respectively.
| Parameter | Duck's Island | Count Up! Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (3 ratings) — better | — |
| Positive reviews | 93.3% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 126 MB | 275 MB |
| Age rating | 4+ | 4+ |
| Developer | new game style | MICHIKO MATSUMOTO |
In-app purchases
Duck's Island
- Unlock levels 6 and above$1.99
- Expand the home$1.99
- Owned widgets 99$1.99
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- Four companions$1.99
Count Up! Calc
No in-app purchases
Questions
Is Duck's Island free?
Is Count Up! Calc free?
Do Duck's Island or Count Up! Calc have ads?
Which is updated more often, Duck's Island or Count Up! Calc?
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