# Error Decoder AI vs AI~Diffuser

The clearest difference is in-app purchases: AI~Diffuser at none against Error Decoder AI's 2. AI~Diffuser also leads on iOS requirement (13.0 vs 17.6). Error Decoder AI's advantage is update cadence (fortnightly vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Error Decoder AI sells 2 in-app purchases, starting at $6.99 per 7 days. AI~Diffuser asks for nothing beyond the download.

Error Decoder AI ships an update fortnightly, AI~Diffuser every 3 months. The most recent releases landed on September 16, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Error Decoder AI | AI~Diffuser |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Size | 55 MB | 58 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Enevoldsen](https://appshunter.io/developer/1840489157) | [Guangzhou Lanmei Computer Technology Co., Ltd.](https://appshunter.io/developer/989104097) |

## What reviewers say

### Error Decoder AI

[App page](https://appshunter.io/ios/app/error-decoder-ai/id6754816374)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited error code decodes. | $6.99 | per 7 days |
| Unlimited error code decodes | $24.99 | per month |


### AI~Diffuser

[App page](https://appshunter.io/ios/app/aidiffuser/id6757913113)

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

**In-app purchases:** none


## Frequently asked questions

### Is Error Decoder AI free?

Error Decoder AI is free to download, with in-app purchases available.

### Is AI~Diffuser free?

AI~Diffuser is free to download, with no in-app purchases.

### Do Error Decoder AI or AI~Diffuser have ads?

Neither Error Decoder AI nor AI~Diffuser shows ads.

### Which is updated more often, Error Decoder AI or AI~Diffuser?

Error Decoder AI ships an update fortnightly, and AI~Diffuser every 3 months. Most recently, Error Decoder AI was updated on September 16, 2026 and AI~Diffuser on September 19, 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.*