# 2357P vs Number Master

The clearest difference is update cadence: Number Master at every 2 weeks against 2357P's every 15 months. Number Master also leads on iOS requirement (13.0 vs 17.0). 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.

2357P ships an update every 15 months, Number Master every 2 weeks. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 2357P | Number Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/2357p/id957233368/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 1 MB | 63 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Yuantong Lu](https://appshunter.io/developer/884739279) | [Nguyen Pham Tuan Hoang](https://appshunter.io/developer/1722632422) |

## What reviewers say

### 2357P

[App page](https://appshunter.io/ios/app/2357p/id957233368)

A simple number-based game where players decompose and compose numbers using prime bases 2, 3, 5, and 7. Aim to achieve higher scores and compete on the Game Center leaderboard.

**Highlights:** Number decomposition, Number composition, Prime number bases (2, 3, 5, 7), Score-based gameplay, Game Center leaderboard integration

**In-app purchases:** none


### Number Master

[App page](https://appshunter.io/ios/app/number-master-brain-training/id6753109959)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 2357P free?

2357P is free to download, with no in-app purchases.

### Is Number Master free?

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

### Do 2357P or Number Master have ads?

Neither 2357P nor Number Master shows ads.

### Which is updated more often, 2357P or Number Master?

2357P ships an update every 15 months, and Number Master every 2 weeks. Most recently, 2357P was updated on October 24, 2026 and Number Master on October 14, 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.*