# 西日本特急効果音 vs Spot Diff Creator with AI

The clearest difference is in-app purchases: 西日本特急効果音 at none against Spot Diff Creator with AI's 4. 西日本特急効果音 also leads on ads (none vs shown) and iOS requirement (13.0 vs 18.5). Spot Diff Creator with AI's advantage is update cadence (every 2 days vs every 6 weeks). On price and device support there is nothing between them.

Both are free to download. Spot Diff Creator with AI sells 4 one-off in-app purchases. 西日本特急効果音 asks for nothing beyond the download.

西日本特急効果音 ships an update every 6 weeks, Spot Diff Creator with AI every 2 days. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 西日本特急効果音 | Spot Diff Creator with AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Size | 27 MB | 19 MB |
| Requires iOS | **13.0** | 18.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yuta Wakamatsu](https://appshunter.io/developer/1482594118) | [Yuto Inagaki](https://appshunter.io/developer/1733484400) |

## What reviewers say

### 西日本特急効果音

[App page](https://appshunter.io/ios/app/id6747906864)

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

**In-app purchases:** none


### Spot Diff Creator with AI

[App page](https://appshunter.io/ios/app/spot-diff-creator-with-ai/id6767998994)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 points | $0.49 | one-time |
| 15 points | $1.99 | one-time |
| 35 points | $3.99 | one-time |
| 80 points | $5.99 | one-time |


## Frequently asked questions

### Is 西日本特急効果音 free?

西日本特急効果音 is free to download, with no in-app purchases.

### Is Spot Diff Creator with AI free?

Spot Diff Creator with AI is free to download, with in-app purchases available.

### Do 西日本特急効果音 or Spot Diff Creator with AI have ads?

Spot Diff Creator with AI shows ads; 西日本特急効果音 does not.

### Which is updated more often, 西日本特急効果音 or Spot Diff Creator with AI?

西日本特急効果音 ships an update every 6 weeks, and Spot Diff Creator with AI every 2 days. Most recently, 西日本特急効果音 was updated on September 21, 2026 and Spot Diff Creator with AI 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.*