# PrefixCalc vs コラッツ計算機｜数列シミュレーター

The clearest difference is in-app purchases: PrefixCalc at none against コラッツ計算機｜数列シミュレーター's 1. PrefixCalc also leads on ads (none vs shown) and iOS requirement (12.0 vs 26.2). On price and device support there is nothing between them.

Both are free to download. コラッツ計算機｜数列シミュレーター sells 1 one-off in-app purchase. PrefixCalc asks for nothing beyond the download.

## The numbers

| Metric | PrefixCalc | コラッツ計算機｜数列シミュレーター |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Weekly |
| Size | 28 MB | 5 MB |
| Requires iOS | **12.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YONAGARE LAB](https://appshunter.io/developer/1810986554) | [Kenji Yanase](https://appshunter.io/developer/1865920313) |

## What reviewers say

### PrefixCalc

[App page](https://appshunter.io/ios/app/prefixcalc/id6748650037)

**Features:** macOS Compatibility

**In-app purchases:** none


### コラッツ計算機｜数列シミュレーター

[App page](https://appshunter.io/ios/app/id6766773009)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム | $0.49 | one-time |


## Frequently asked questions

### Is PrefixCalc free?

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

### Is コラッツ計算機｜数列シミュレーター free?

コラッツ計算機｜数列シミュレーター is free to download, with in-app purchases available.

### Do PrefixCalc or コラッツ計算機｜数列シミュレーター have ads?

コラッツ計算機｜数列シミュレーター shows ads; PrefixCalc does not.

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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.*