# Freematics Emulator

> Control Freematics OBD-II Emulators via BLE to adjust PIDs, DTCs, and VIN. (iPhone/iPad app by Shanghai Han Yu Information Technologies Co., Ltd..)

- Source: https://appshunter.io/ios/app/freematics-emulator/id931166528 (this page in markdown: same URL + `.md`)
- Developer: [Shanghai Han Yu Information Technologies Co., Ltd.](https://appshunter.io/developer/931166527)
- Category: Utilities
- Price: Free
- Rating: 1.00/5 from 5 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 6.0 · 2 MB
- Languages: English
- Released: 2014-11-18
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/freematics-emulator/id931166528/reviews.md

## What is Freematics Emulator?

Freematics Emulator is a utility to control Freematics OBD-II Emulator via BLE.

Function:
* Adjust OBD-II PIDs, DTC and VIN etc for Freematics OBD-II Emulator in real time. More detail for Freematics OBD-II Emulator , please visit http://freematics.com/pages/products/freematics-obd-emulator-mk2/
* Scan Freematics OBD-II Emulator and connect the one you select
* Add and remove knob for different PIDs easily

## Key features

- Real-time OBD-II PID adjustment
- DTC and VIN modification
- BLE connection to emulators
- Customizable PID knobs
- Emulator scanning and selection

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/freematics-emulator/id931166528/reviews.md

### 1/5 — Crash on app start

*2024-04-15*

This app crashes on app start

### 1/5 — Crashes on launch.

*2021-06-08*

Garbage. Crashes on application start.

### 1/5 — Crashes upon seeing the OBD Emulator

*2021-04-23*

The app just exits immediately when the Freematics OBD Emulator MK2 is powered on.

### 1/5 — Broken and missing features

*2017-10-03*

Setting DTC does not work. Cannot find documentation to determine if this is user error 

Ignition toggle does not work

"Edit your knobs" only supports a subset of OBD-II options

Overall not very useful.

## Frequently asked questions about Freematics Emulator

### What is Freematics Emulator used for?

Freematics Emulator is a utility designed to control Freematics OBD-II Emulators. It allows users to adjust parameters like PIDs, DTCs, and VIN in real-time via Bluetooth Low Energy.

### How do I connect Freematics Emulator to my OBD-II device?

The app can scan for available Freematics OBD-II Emulators via BLE. Once found, you can select the desired emulator from the list to establish a connection.

### Can I customize the data displayed in Freematics Emulator?

Yes, Freematics Emulator allows you to add and remove 'knobs' for different PIDs. This feature helps in easily managing and accessing specific data points relevant to your testing needs.

### What devices is Freematics Emulator compatible with?

Freematics Emulator is available for iPhone and iPad devices. It supports iOS versions compatible with its latest update.

### Is Freematics Emulator free to use?

Yes, Freematics Emulator is available for free. There are no in-app purchases or subscription fees associated with its use.

### Does Freematics Emulator have ads?

No, Freematics Emulator does not contain advertisements. It is a completely ad-free utility.

### When was Freematics Emulator last updated?

The latest version of Freematics Emulator was released on July 13, 2015. The app was initially released on November 18, 2014.

### What is the age rating for Freematics Emulator?

Freematics Emulator has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions.

## Version history (last 3 releases)

### 1.2 — 2015-07-13

This app has been updated by Apple to display the Apple Watch app icon.

1. Fix connecting issue on the new BLE module
2. Connect the first found emulator automatically when app start up
3. Update all the PID value on the UI after connected
4. Add two new bus protocols
5. Add new mode 07/0A mode DTC
6. Add ignition on/off support
7. Use friendly protocol name instead of UART AT command name
8. Other minor changes

### 1.1 — 2014-11-24

1. it also works for iphone now 
2. Make device scan more stable
3. Fix: the wrong value is show on knob sometimes

### 1.0 — 2014-11-17

No release notes.

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## More apps by Shanghai Han Yu Information Technologies Co., Ltd.

- [Freematics Controller](https://appshunter.io/ios/app/freematics-controller/id1587433407)

All apps by Shanghai Han Yu Information Technologies Co., Ltd.: https://appshunter.io/developer/931166527

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*