# f(x) vs 素因数分解キングダム

The clearest difference is update cadence: 素因数分解キングダム at weekly against f(x)'s monthly. 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.

f(x) ships an update monthly, 素因数分解キングダム weekly. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | f(x) | 素因数分解キングダム |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Size | 77 MB | 55 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Ryo Matsumoto](https://appshunter.io/developer/1725054568) | [Yuta Matsuda](https://appshunter.io/developer/1788852960) |

## What reviewers say

### f(x)

[App page](https://appshunter.io/ios/app/fx/id6475749250)

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

**In-app purchases:** none


### 素因数分解キングダム

[App page](https://appshunter.io/ios/app/id6740195589)

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

**In-app purchases:** none


## Frequently asked questions

### Is f(x) free?

f(x) is free to download, with no in-app purchases.

### Is 素因数分解キングダム free?

素因数分解キングダム is free to download, with no in-app purchases.

### Do f(x) or 素因数分解キングダム have ads?

Neither f(x) nor 素因数分解キングダム shows ads.

### Which is updated more often, f(x) or 素因数分解キングダム?

f(x) ships an update monthly, and 素因数分解キングダム weekly. Most recently, f(x) was updated on October 25, 2026 and 素因数分解キングダム on October 30, 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.*