# ERC Unlocker vs KRA System

The clearest difference is in-app purchases: KRA System at none against ERC Unlocker's 2. KRA System also leads on iOS requirement (12.4 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. ERC Unlocker sells 2 one-off in-app purchases. KRA System asks for nothing beyond the download.

## The numbers

| Metric | ERC Unlocker | KRA System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (8 ratings)](https://appshunter.io/ios/app/erc-unlocker-erc-calculator/id1347685769/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 56.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 18 MB |
| Requires iOS | 15.6 | **12.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zeeshan Ahmad](https://appshunter.io/developer/1320755442) | [KAIHO INDUSTRY CO., LTD.](https://appshunter.io/developer/1672920600) |

## What reviewers say

### ERC Unlocker

[App page](https://appshunter.io/ios/app/erc-unlocker-erc-calculator/id1347685769)

This utility app calculates ERC codes required for certain car audio and navigation systems after power interruptions. It offers a simple process to regain access to multimedia features by entering your device's serial number.

**Highlights:** Fast ERC code calculation, Supports wide range of audio units, Simple instructions, Convenient and quick access, Customer support

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get 1 ERC Code | $9.99 | one-time |
| Get 1  68 Series ERC Code | $19.99 | one-time |


### KRA System

[App page](https://appshunter.io/ios/app/kra-system/id6766750680)

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

**In-app purchases:** none


## Frequently asked questions

### Is ERC Unlocker free?

ERC Unlocker is free to download, with in-app purchases available.

### Is KRA System free?

KRA System is free to download, with no in-app purchases.

### Do ERC Unlocker or KRA System have ads?

Neither ERC Unlocker nor KRA System shows ads.

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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.*