# Cross Math vs Prime Merge

The clearest difference is update cadence: Prime Merge at every 4 days against Cross Math's every 10 days. Cross Math's advantage is iOS requirement (13.0 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

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

Cross Math ships an update every 10 days, Prime Merge every 4 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Cross Math | Prime Merge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (1.3K ratings)](https://appshunter.io/ios/app/cross-math-math-game/id6636473965/reviews)** | — |
| Number of ratings | **1.3K** | — |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 10 days | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 92 MB | 5 MB |
| Requires iOS | **13.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joy Star Games](https://appshunter.io/developer/1762773198) | [ryuya matsuo](https://appshunter.io/developer/1841066123) |

## What reviewers say

### Cross Math

[App page](https://appshunter.io/ios/app/cross-math-math-game/id6636473965)

Engage your mind with a math puzzle game that uses addition, subtraction, multiplication, and division. Progress through increasingly difficult levels, track your performance, and enjoy daily challenges to sharpen your logic and math skills.

**Highlights:** Arithmetic puzzles (add, subtract, multiply, divide), Progressive difficulty levels, Unlimited undo function, In-game hints, Progress statistics, Daily challenges

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Great gameplay and controls
- 💡 Mentally challenging and fun
- 🧠 Helps with math and logical thinking
- 🎮 Enjoyable math game

**What reviewers complain about**

- 🐛 Puzzle errors and unsolvable puzzles
- 🔍 Limited number of expert-level puzzles
- 📢 Excessive ads that are hard to close

**Reported bugs**

- App hanging and crashing when opened multiple times a day
- Ads causing an endless loop and requiring app restart

**Requested features**

- Ability to pay to remove ads
- Option to purchase hints


### Prime Merge

[App page](https://appshunter.io/ios/app/prime-merge/id6792428586)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Cross Math free?

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

### Is Prime Merge free?

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

### Do Cross Math or Prime Merge have ads?

Both Cross Math and Prime Merge show ads.

### Which is updated more often, Cross Math or Prime Merge?

Cross Math ships an update every 10 days, and Prime Merge every 4 days. Most recently, Cross Math was updated on October 30, 2026 and Prime Merge on October 31, 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.*