# Math 24 vs calYc

The clearest difference is in-app purchases: calYc at none against Math 24's 4. calYc also leads on ads (none vs shown). Math 24's advantage is update cadence (every 6 weeks vs every 20 months) and iOS requirement (10.0 vs 18.0). On price and device support there is nothing between them.

Both are free to download. Math 24 sells 4 one-off in-app purchases. calYc asks for nothing beyond the download.

Math 24 ships an update every 6 weeks, calYc every 20 months. The most recent releases landed on September 22, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Math 24 | calYc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.1K ratings)](https://appshunter.io/ios/app/math-24-mental-math-cards/id1274499822/reviews)** | — |
| Number of ratings | **2.1K** | — |
| Positive reviews | 76.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 20 months |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 7 MB |
| Requires iOS | **10.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Peikun Duan](https://appshunter.io/developer/1240254007) | [Lorenz Markus* Binggeli*](https://appshunter.io/developer/1741207030) |

## What reviewers say

### Math 24

[App page](https://appshunter.io/ios/app/math-24-mental-math-cards/id1274499822)

This app offers a classic arithmetic puzzle where players combine four numbers using basic operations to reach 24. It features progressive difficulty levels, a timed challenge mode, and integration with Game Center for leaderboards and achievements.

**Highlights:** Combine four numbers to make 24, Addition, subtraction, multiplication, division, Stage mode with 300 levels, Speed mode for timed challenges, Game Center leaderboards and achievements, Help button for difficult questions

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 12 Tips | $1.39 | one-time |
| Remove Ads | $2.39 | one-time |
| 20 Tips | $2.39 | one-time |
| 20 Tips + Remove Ads | $3.99 | one-time |

**What reviewers like**

- 🚀 Fun and challenging
- 👍 Helps improve math skills
- 👍 Great brain training
- 👍 Convenient and accessible

**What reviewers complain about**

- 🙄 Too many ads
- 🐛 Bugs and issues with ads
- 🙄 Levels too difficult

**Reported bugs**

- Incorrect solutions provided
- Ads not working properly
- Syncing issues across devices

**Requested features**

- Add negative numbers and more features
- Option to favorite/save questions
- Difficulty levels (easy, medium, hard)


### calYc

[App page](https://appshunter.io/ios/app/calyc/id6496866433)

**In-app purchases:** none


## Frequently asked questions

### Is Math 24 free?

Math 24 is free to download, with in-app purchases available.

### Is calYc free?

calYc is free to download, with no in-app purchases.

### Do Math 24 or calYc have ads?

Math 24 shows ads; calYc does not.

### Which is updated more often, Math 24 or calYc?

Math 24 ships an update every 6 weeks, and calYc every 20 months. Most recently, Math 24 was updated on September 22, 2026 and calYc on May 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*