# Numbertopia vs Synthesis24

The clearest difference is iOS requirement: Numbertopia at 13.5 against Synthesis24's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Numbertopia ships an update every 5 months, Synthesis24 every 3 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Numbertopia | Synthesis24 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/numbertopia/id1536525498/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 11 MB | 49 MB |
| Requires iOS | **13.5** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Tabledox Technology Co., Limited](https://appshunter.io/developer/1448361669) | [杰超 杨](https://appshunter.io/developer/1364053114) |

## What reviewers say

### Numbertopia

[App page](https://appshunter.io/ios/app/numbertopia/id1536525498)

This educational game challenges players to use arithmetic operations on a set of cards to reach a target number. It features both pre-set levels and randomly generated puzzles, encouraging strategic thinking and advanced math skills.

**Highlights:** Reach target numbers with arithmetic operations, Level-based puzzles with unlockable stages, Randomly generated puzzles, Multiple solutions for puzzles, Star rewards for progress and solutions

**In-app purchases:** none


### Synthesis24

[App page](https://appshunter.io/ios/app/synthesis24/id1606353407)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Numbertopia free?

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

### Is Synthesis24 free?

Synthesis24 is free to download, with no in-app purchases.

### Do Numbertopia or Synthesis24 have ads?

Neither Numbertopia nor Synthesis24 shows ads.

### Which is updated more often, Numbertopia or Synthesis24?

Numbertopia ships an update every 5 months, and Synthesis24 every 3 months. Most recently, Numbertopia was updated on October 24, 2026 and Synthesis24 on October 9, 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.*