# Solve 24 vs Four Square

The clearest difference is in-app purchases: Four Square at none against Solve 24's 1. Four Square also leads on update cadence (daily vs every 5 days) and iOS requirement (16.0 vs 26.0). Solve 24's advantage is device support (3 vs 1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Solve 24 sells 1 one-off in-app purchase. Four Square asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Solve 24 against 5.0 for Four Square. Both are backed by a comparable volume of ratings — 11 and 5 respectively.

Solve 24 ships an update every 5 days, Four Square daily. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Solve 24 | Four Square |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (11 ratings)](https://appshunter.io/ios/app/solve-24-math-puzzles/id1561419381/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/four-square-reaction-game/id6484319772/reviews)** |
| Number of ratings | **11** | 5 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 67 MB | 15 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hamdouchi Interactive, LLC](https://appshunter.io/developer/306208255) | [Elo Book LLC](https://appshunter.io/developer/1724284871) |

## What reviewers say

### Solve 24

[App page](https://appshunter.io/ios/app/solve-24-math-puzzles/id1561419381)

Challenge your brain with arithmetic puzzles. Use basic operations to reach 24 with four numbers. Features multiple game modes, including time trial and two-player face-off, for endless mental exercise.

**Highlights:** Arithmetic puzzle solving, Multiple difficulty levels, Time trial mode, Two-player face-off mode, Endless unique problems, Intuitive interface

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Hints | $0.99 | one-time |


### Four Square

[App page](https://appshunter.io/ios/app/four-square-reaction-game/id6484319772)

Test your reflexes in this quick-reaction game. Tap solid squares and avoid blank ones within a 15-second time limit. It's a simple yet challenging test of speed and accuracy.

**Highlights:** Tap solid squares, Avoid blank squares, 15-second time limit, Simple controls, Reaction test

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Solve 24 free?

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

### Is Four Square free?

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

### Which has better reviews, Solve 24 or Four Square?

Four Square is rated higher. Solve 24 averages 4.9 out of 5 from 11 ratings, while Four Square averages 5.0 from 5 ratings.

### Do Solve 24 or Four Square have ads?

Neither Solve 24 nor Four Square shows ads.

### Which is updated more often, Solve 24 or Four Square?

Solve 24 ships an update every 5 days, and Four Square daily. Most recently, Solve 24 was updated on October 25, 2026 and Four Square on October 24, 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.*