# Prime Checker vs 因数分解特訓《初級編》

The clearest difference is device support: Prime Checker at 4 against 因数分解特訓《初級編》's 2. 因数分解特訓《初級編》's advantage is iOS requirement (7.1 vs 12.4). On price, review sentiment, 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.

## The numbers

| Metric | Prime Checker | 因数分解特訓《初級編》 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/prime-checker/id389112910/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **95.8% of reviews** | 91.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | — |
| Monetization | Free | — |
| Size | 3 MB | 3 MB |
| Requires iOS | 12.4 | **7.1** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Heart Solutions, Inc.](https://appshunter.io/developer/389112913) | [SATORU MATSUSHITA](https://appshunter.io/developer/918757672) |

## What reviewers say

### Prime Checker

[App page](https://appshunter.io/ios/app/prime-checker/id389112910)

This app performs advanced mathematical calculations for numbers, including integer factorization, Euler's totient function, and solving specific Diophantine equations. It utilizes advanced algorithms for factorization and primality testing.

**Highlights:** Integer factorization, Euler's totient function, Primitive root calculation, Diophantine equation solver, Primality testing

**Features:** macOS Compatibility

**In-app purchases:** none


### 因数分解特訓《初級編》

[App page](https://appshunter.io/ios/app/id918757673)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Prime Checker free?

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

### Is 因数分解特訓《初級編》 free?

因数分解特訓《初級編》 is free to download, with no in-app purchases.

### Do Prime Checker or 因数分解特訓《初級編》 have ads?

Neither Prime Checker nor 因数分解特訓《初級編》 shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*