# 確率計算ツール vs 割合計算機

The clearest difference is in-app purchases: 割合計算機 at none against 確率計算ツール's 1. 確率計算ツール's advantage is update cadence (monthly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 確率計算ツール sells 1 in-app purchase, starting at $0.99 per month. 割合計算機 asks for nothing beyond the download.

確率計算ツール ships an update monthly, 割合計算機 every 2 months. The most recent releases landed on October 11, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | 確率計算ツール | 割合計算機 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Size | 7 MB | 5 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Seiya Matsui](https://appshunter.io/developer/1561221635) | [Risako Asai](https://appshunter.io/developer/1671273580) |

## What reviewers say

### 確率計算ツール

[App page](https://appshunter.io/ios/app/id1659266582)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告なしプラン | $0.99 | per month |


### 割合計算機

[App page](https://appshunter.io/ios/app/id6477940610)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 確率計算ツール free?

確率計算ツール is free to download, with in-app purchases available.

### Is 割合計算機 free?

割合計算機 is free to download, with no in-app purchases.

### Do 確率計算ツール or 割合計算機 have ads?

Both 確率計算ツール and 割合計算機 show ads.

### Which is updated more often, 確率計算ツール or 割合計算機?

確率計算ツール ships an update monthly, and 割合計算機 every 2 months. Most recently, 確率計算ツール was updated on October 11, 2026 and 割合計算機 on October 19, 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.*