# 確率計算ツール vs まわるーだ

The clearest difference is in-app purchases: まわるーだ at none against 確率計算ツール's 1. まわるーだ also leads on iOS requirement (13.0 vs 15.0). 確率計算ツール's advantage is update cadence (monthly vs every 2 months). On price, ads and device support 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. まわるーだ asks for nothing beyond the download.

確率計算ツール ships an update monthly, まわるーだ every 2 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 確率計算ツール | まわるーだ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Size | 7 MB | 42 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Seiya Matsui](https://appshunter.io/developer/1561221635) | [Kyosuke Takahashi](https://appshunter.io/developer/1393537221) |

## 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 |


### まわるーだ

[App page](https://appshunter.io/ios/app/id6449165978)

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

**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 まわるーだ free?

まわるーだ is free to download, with no in-app purchases.

### Do 確率計算ツール or まわるーだ have ads?

Both 確率計算ツール and まわるーだ show ads.

### Which is updated more often, 確率計算ツール or まわるーだ?

確率計算ツール ships an update monthly, and まわるーだ every 2 months. Most recently, 確率計算ツール was updated on October 27, 2026 and まわるーだ on October 25, 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.*