# Conversion! vs Factorial Calculator

The clearest difference is ads: Conversion! at none against Factorial Calculator's shown. Factorial Calculator's advantage is iOS requirement (11.0 vs 26.0). On price, update cadence, 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.

Conversion! ships an update every 20 months, Factorial Calculator every 12 months. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Conversion! | 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 | **No** | Yes |
| Update frequency | Every 20 months | **Every 12 months** |
| Monetization | — | Ad-supported |
| Size | 15 MB | 12 MB |
| Requires iOS | 26.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [SDG CODE DOO NIS](https://appshunter.io/developer/1343251532) |

## What reviewers say

### Conversion!

[App page](https://appshunter.io/ios/app/conversion/id1227201297)

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

**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 Conversion! free?

Conversion! 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 Conversion! or Factorial Calculator have ads?

Factorial Calculator shows ads; Conversion! does not.

### Which is updated more often, Conversion! or Factorial Calculator?

Conversion! ships an update every 20 months, and Factorial Calculator every 12 months. Most recently, Conversion! was updated on November 6, 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.*