# ERC Unlocker vs JSS遠隔監視

The clearest difference is review sentiment: ERC Unlocker at 56% against JSS遠隔監視's 0%. ERC Unlocker also leads on update cadence (every 6 weeks vs every 4 months). JSS遠隔監視's advantage is in-app purchases (none vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ERC Unlocker sells 2 one-off in-app purchases. JSS遠隔監視 asks for nothing beyond the download.

ERC Unlocker ships an update every 6 weeks, JSS遠隔監視 every 4 months. The most recent releases landed on October 29, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | ERC Unlocker | JSS遠隔監視 |
| --- | --- | --- |
| 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** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 8 MB | 112 MB |
| Requires iOS | **15.6** | 16.3 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zeeshan Ahmad](https://appshunter.io/developer/1320755442) | [Japan Security System](https://appshunter.io/developer/1434044763) |

## 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 |


### JSS遠隔監視

[App page](https://appshunter.io/ios/app/jss/id1571446359)

This utility app allows users to remotely monitor and control Japan Security System's network security devices from their smartphones. View live and recorded footage, control PTZ cameras, and manage device settings from anywhere.

**Highlights:** Live and recorded video playback, Wide-angle camera distortion correction, PTZ camera control, Video image capture, Calendar search and playback, Device management

**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 JSS遠隔監視 free?

JSS遠隔監視 is free to download, with no in-app purchases.

### Do ERC Unlocker or JSS遠隔監視 have ads?

Neither ERC Unlocker nor JSS遠隔監視 shows ads.

### Which is updated more often, ERC Unlocker or JSS遠隔監視?

ERC Unlocker ships an update every 6 weeks, and JSS遠隔監視 every 4 months. Most recently, ERC Unlocker was updated on October 29, 2026 and JSS遠隔監視 on October 11, 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.*