# MultiCounter vs コラッツ計算機｜数列シミュレーター

The clearest difference is in-app purchases: MultiCounter at none against コラッツ計算機｜数列シミュレーター's 1. MultiCounter also leads on ads (none vs shown) and update cadence (every 2 days vs weekly). 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. MultiCounter asks for nothing beyond the download.

MultiCounter ships an update every 2 days, コラッツ計算機｜数列シミュレーター weekly. The most recent releases landed on August 22, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | MultiCounter | 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 | **Every 2 days** | Weekly |
| Size | 0 MB | 5 MB |
| Requires iOS | **18.2** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hirofumi Iwashita](https://appshunter.io/developer/1587869541) | [Kenji Yanase](https://appshunter.io/developer/1865920313) |

## What reviewers say

### MultiCounter

[App page](https://appshunter.io/ios/app/multicounter/id6742705280)

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

**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 MultiCounter free?

MultiCounter 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 MultiCounter 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; MultiCounter does not.

### Which is updated more often, MultiCounter or コラッツ計算機｜数列シミュレーター?

MultiCounter ships an update every 2 days, and コラッツ計算機｜数列シミュレーター weekly. Most recently, MultiCounter was updated on August 22, 2026 and コラッツ計算機｜数列シミュレーター on September 22, 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.*