# びっくりアプリ vs Spot Diff Creator with AI

The clearest difference is price: Spot Diff Creator with AI at Free against びっくりアプリ's $1.99. Spot Diff Creator with AI also leads on update cadence (every 2 days vs every 4 months). びっくりアプリ's advantage is in-app purchases (none vs 4) and iOS requirement (14.2 vs 18.5). On ads and device support there is nothing between them.

Spot Diff Creator with AI is free to download; びっくりアプリ costs $1.99 up front. Spot Diff Creator with AI sells 4 one-off in-app purchases. びっくりアプリ asks for nothing beyond the download.

びっくりアプリ ships an update every 4 months, Spot Diff Creator with AI every 2 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | びっくりアプリ | Spot Diff Creator with AI |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/id1508282901/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 20 MB | 19 MB |
| Requires iOS | **14.2** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Yusaku Fujita](https://appshunter.io/developer/1506740830) | [Yuto Inagaki](https://appshunter.io/developer/1733484400) |

## What reviewers say

### びっくりアプリ

[App page](https://appshunter.io/ios/app/id1508282901)

**Features:** macOS Compatibility

**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 びっくりアプリ free?

びっくりアプリ costs $1.99, 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 びっくりアプリ or Spot Diff Creator with AI have ads?

Both びっくりアプリ and Spot Diff Creator with AI show ads.

### Which is updated more often, びっくりアプリ or Spot Diff Creator with AI?

びっくりアプリ ships an update every 4 months, and Spot Diff Creator with AI every 2 days. Most recently, びっくりアプリ was updated on October 24, 2026 and Spot Diff Creator with AI on October 24, 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.*