# 確率計算ツール vs 4 buttons camera

The clearest difference is in-app purchases: 4 buttons camera at none against 確率計算ツール's 1. 4 buttons camera also leads on update cadence (every 2 weeks vs monthly). 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. 4 buttons camera asks for nothing beyond the download.

確率計算ツール ships an update monthly, 4 buttons camera every 2 weeks. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 確率計算ツール | 4 buttons camera |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 7 MB | 37 MB |
| Requires iOS | **15.0** | 15.8.3 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seiya Matsui](https://appshunter.io/developer/1561221635) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## 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 |


### 4 buttons camera

[App page](https://appshunter.io/ios/app/4-buttons-camera/id6502266902)

**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 4 buttons camera free?

4 buttons camera is free to download, with no in-app purchases.

### Do 確率計算ツール or 4 buttons camera have ads?

Both 確率計算ツール and 4 buttons camera show ads.

### Which is updated more often, 確率計算ツール or 4 buttons camera?

確率計算ツール ships an update monthly, and 4 buttons camera every 2 weeks. Most recently, 確率計算ツール was updated on September 10, 2026 and 4 buttons camera on September 17, 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.*