# ERC Unlocker vs 出場アラーム Studio

The clearest difference is in-app purchases: 出場アラーム Studio at none against ERC Unlocker's 2. 出場アラーム Studio also leads on update cadence (every 4 days vs every 6 weeks). ERC Unlocker's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 26.0). On price and ads there is nothing between them.

Both are free to download. ERC Unlocker sells 2 one-off in-app purchases. 出場アラーム Studio asks for nothing beyond the download.

ERC Unlocker ships an update every 6 weeks, 出場アラーム Studio every 4 days. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ERC Unlocker | 出場アラーム Studio |
| --- | --- | --- |
| 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 | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 7 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Zeeshan Ahmad](https://appshunter.io/developer/1320755442) | [Junichiro Tokiyoshi](https://appshunter.io/developer/1894481041) |

## 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 |


### 出場アラーム Studio

[App page](https://appshunter.io/ios/app/studio/id6781116389)

**In-app purchases:** none


## Frequently asked questions

### Is ERC Unlocker free?

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

### Is 出場アラーム Studio free?

出場アラーム Studio is free to download, with no in-app purchases.

### Do ERC Unlocker or 出場アラーム Studio have ads?

Neither ERC Unlocker nor 出場アラーム Studio shows ads.

### Which is updated more often, ERC Unlocker or 出場アラーム Studio?

ERC Unlocker ships an update every 6 weeks, and 出場アラーム Studio every 4 days. Most recently, ERC Unlocker was updated on October 29, 2026 and 出場アラーム Studio on October 31, 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.*