# 確率計算ツール vs Gacha Luck Tracker

The clearest difference is in-app purchases: Gacha Luck Tracker at none against 確率計算ツール's 1. Gacha Luck Tracker also leads on ads (none vs shown). 確率計算ツール's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence 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. Gacha Luck Tracker asks for nothing beyond the download.

確率計算ツール ships an update monthly, Gacha Luck Tracker every 5 weeks. The most recent releases landed on October 27, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 確率計算ツール | Gacha Luck Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 5 weeks |
| Size | 7 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Seiya Matsui](https://appshunter.io/developer/1561221635) | [kondo ryohei](https://appshunter.io/developer/6795023035) |

## 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 |


### Gacha Luck Tracker

[App page](https://appshunter.io/ios/app/gacha-luck-tracker/id6801412074)

**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 Gacha Luck Tracker free?

Gacha Luck Tracker is free to download, with no in-app purchases.

### Do 確率計算ツール or Gacha Luck Tracker have ads?

確率計算ツール shows ads; Gacha Luck Tracker does not.

### Which is updated more often, 確率計算ツール or Gacha Luck Tracker?

確率計算ツール ships an update monthly, and Gacha Luck Tracker every 5 weeks. Most recently, 確率計算ツール was updated on October 27, 2026 and Gacha Luck Tracker on October 21, 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.*