# Prime Factorization vs ぶしゅプッシュ

The clearest difference is ads: Prime Factorization at none against ぶしゅプッシュ's shown. Prime Factorization also leads on iOS requirement (7.1 vs 14.0). ぶしゅプッシュ's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, 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.

Prime Factorization ships an update every 6 weeks, ぶしゅプッシュ every 2 weeks. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Prime Factorization | ぶしゅプッシュ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (4 ratings)](https://appshunter.io/ios/app/prime-factorization-free-brain-training-game/id1062168263/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 22 MB | 104 MB |
| Requires iOS | **7.1** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [NAKAYUBI CORPORATION](https://appshunter.io/developer/826300169) | [FUKUROU](https://appshunter.io/developer/1603805098) |

## What reviewers say

### Prime Factorization

[App page](https://appshunter.io/ios/app/prime-factorization-free-brain-training-game/id1062168263)

This game challenges you to break down numbers into their prime factors until you reach one. It offers a simple yet engaging way to exercise your brain through number manipulation.

**Highlights:** Number factorization gameplay, Objective: reduce number to 1, Brain training exercises, Simple mechanics

**Features:** macOS Compatibility

**In-app purchases:** none


### ぶしゅプッシュ

[App page](https://appshunter.io/ios/app/id6670146570)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Prime Factorization free?

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

### Is ぶしゅプッシュ free?

ぶしゅプッシュ is free to download, with no in-app purchases.

### Do Prime Factorization or ぶしゅプッシュ have ads?

ぶしゅプッシュ shows ads; Prime Factorization does not.

### Which is updated more often, Prime Factorization or ぶしゅプッシュ?

Prime Factorization ships an update every 6 weeks, and ぶしゅプッシュ every 2 weeks. Most recently, Prime Factorization was updated on October 14, 2026 and ぶしゅプッシュ on October 7, 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.*