# ZKBio Partner vs Error Decoder AI

The clearest difference is in-app purchases: ZKBio Partner at none against Error Decoder AI's 2. ZKBio Partner also leads on iOS requirement (15 vs 17.6). Error Decoder AI's advantage is update cadence (fortnightly vs monthly). 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. ZKBio Partner asks for nothing beyond the download.

ZKBio Partner ships an update monthly, Error Decoder AI fortnightly. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ZKBio Partner | Error Decoder AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Size | 134 MB | 55 MB |
| Requires iOS | **15** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ZKTeco Inc.](https://appshunter.io/developer/955313767) | [Thomas Enevoldsen](https://appshunter.io/developer/1840489157) |

## What reviewers say

### ZKBio Partner

[App page](https://appshunter.io/ios/app/zkbio-partner/id6741745010)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is ZKBio Partner free?

ZKBio Partner is free to download, with no in-app purchases.

### Is Error Decoder AI free?

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

### Do ZKBio Partner or Error Decoder AI have ads?

Neither ZKBio Partner nor Error Decoder AI shows ads.

### Which is updated more often, ZKBio Partner or Error Decoder AI?

ZKBio Partner ships an update monthly, and Error Decoder AI fortnightly. Most recently, ZKBio Partner was updated on October 12, 2026 and Error Decoder AI on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*