# PrimeCalc vs Factorial Calculator

The clearest difference is update cadence: PrimeCalc at every 5 weeks against Factorial Calculator's every 12 months. 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.

PrimeCalc ships an update every 5 weeks, Factorial Calculator every 12 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | PrimeCalc | Factorial Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/factorial-calculator/id6741139916/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 5 weeks** | Every 12 months |
| Monetization | — | Ad-supported |
| Size | 12 MB | 12 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yutaka Nakao](https://appshunter.io/developer/1303008060) | [SDG CODE DOO NIS](https://appshunter.io/developer/1343251532) |

## What reviewers say

### PrimeCalc

[App page](https://appshunter.io/ios/app/primecalc-modprime-factor/id1332239791)

**Features:** macOS Compatibility

**In-app purchases:** none


### Factorial Calculator

[App page](https://appshunter.io/ios/app/factorial-calculator/id6741139916)

Easily compute the factorial of any whole number with this straightforward utility. Designed for simplicity and ease of use, it provides a quick way to get factorial results.

**Highlights:** Calculate factorials, Whole number input, Easy to use interface, Quick results

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PrimeCalc free?

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

### Is Factorial Calculator free?

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

### Do PrimeCalc or Factorial Calculator have ads?

Both PrimeCalc and Factorial Calculator show ads.

### Which is updated more often, PrimeCalc or Factorial Calculator?

PrimeCalc ships an update every 5 weeks, and Factorial Calculator every 12 months. Most recently, PrimeCalc was updated on November 2, 2026 and Factorial Calculator on November 4, 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.*