# ERYA vs JT606 Calibration Tool

The clearest difference is iOS requirement: ERYA at 11.0 against JT606 Calibration Tool's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ERYA ships an update every 2 months, JT606 Calibration Tool every 3 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ERYA | JT606 Calibration Tool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 75 MB | 13 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杰军 张](https://appshunter.io/developer/1477600847) | [SHENZHEN JOINT TECHNOLOGY CO.,LTD](https://appshunter.io/developer/1070842011) |

## What reviewers say

### ERYA

[App page](https://appshunter.io/ios/app/erya/id1477600848)

**Features:** macOS Compatibility

**In-app purchases:** none


### JT606 Calibration Tool

[App page](https://appshunter.io/ios/app/jt606-calibration-tool/id6446422488)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ERYA free?

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

### Is JT606 Calibration Tool free?

JT606 Calibration Tool is free to download, with no in-app purchases.

### Do ERYA or JT606 Calibration Tool have ads?

Neither ERYA nor JT606 Calibration Tool shows ads.

### Which is updated more often, ERYA or JT606 Calibration Tool?

ERYA ships an update every 2 months, and JT606 Calibration Tool every 3 months. Most recently, ERYA was updated on October 29, 2026 and JT606 Calibration Tool on October 27, 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.*