# OBD-II Command Diagnostic — Car Doctor Scanner

> Wireless OBD2 car diagnostics and performance monitoring tool. (iPhone/iPad app by 纯圣 刘.)

- Source: https://appshunter.io/ios/app/obd-ii-command-diagnostic/id1335337783 (this page in markdown: same URL + `.md`)
- Developer: [纯圣 刘](https://appshunter.io/developer/551352265)
- Category: Utilities
- Price: $4.99
- Rating: 1.00/5 from 2 App Store ratings · 35 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 4 MB
- Languages: English
- Released: 2018-01-22
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/obd-ii-command-diagnostic/id1335337783/reviews.md

## What is OBD?

WiFi & Bluetooth OBD2 car diagnostics & monitoring tool and highly capable automotive scanner in your pocket! Turns your iPhone/iPod into an advanced display for your engine data. See what your car is doing in realtime, get OBD fault codes, car performance, sensor data and more! 

Reveal vehicle problems before visiting the garage! Used by professional mechanics, auto enthusiasts, and everyday vehicle owners who want to know more about how their vehicle is operating and how their vehicle can be fixed if the Check Engine Light comes on.

DISCLAIMER:  OBD-II Commands requires a compatible third party hardware interface, purchased separately, to communicate with the vehicle. It support both WiFi and Bluetooth OBD Adapters.

OBD-II Commands supports all OBD-II and EOBD compliant vehicles sold worldwide. Please verify that your vehicle is OBD-II/EOBD compliant:
• USA: All cars and light trucks manufactured since 1996 (OBD2)
• EU, Gasoline: Registered in the EU after 1 January 2001 (EOBD)
• EU, Diesel: Registered in the EU after 1 January 2004 (EOBD)

Features:
- Easy to use
- Scan For Trouble Codes
- Freeze Frame Data
- No Wires! Communicates with your vehicle wirelessly
- engine speed
- corrected vehicle speed
- open/closed loop
- boost/vacuum combo gauge
- acceleration (and braking)
- torque
- inst. fuel economy
- avg fuel economy
- avg fuel economy over 3 time periods
- distance to empty
- time to empty
- fuel level %
- fuel remaining in tank
- fuel flow rate gauge
- timing (spark advance)
- engine coolant temp.
- intake air temp.
- ambient air temp.
- manifold absolute pressure
- mass air flow
- fuel trims, short and long term
- percent engine load
- catalyst temp.
- fuel pressure
- lambda gauge
- air/fuel ratio
- distance travelled
- fuel consumed
- avg fuel economy
- fuel cost
- elapsed time
- drive time
- average carbon dioxide emission rate
- total carbon dioxide emission
- start date & time
- number of fillups
- avg fuel flow rate
- avg driving speed
- avg trip speed
- avg boost/vacuum
- avg engine speed
- max acceleration
- max engine power and torque at wheels
- number of stops
- max fuel flow rate
- max speed
- idle time
- max boost/vacuum
- max engine speed
- max braking acceleration
- max engine torque
- % distance travelled while not in gear
- % distance travelled in each gear
- % distance travelled in non-optimal gear
- % time spent while not in gear
- % time spent in each gear
- % time spent while in a non-optimal gear

Please Note:
Please note that this App does NOT work with Bluetooth 2.x or 3.x adapters. This is a hardware limitation which can't be changed. If your are using Bluetooth adapter, please ensure your bluetooth OBD adapter is Bluetooth 4.0 or newer.

We will support and continually develop this app to make it perfect! Hold your breath for exciting new features!

## Key features

- Wireless OBD2 diagnostics
- Real-time engine data display
- Scan and clear trouble codes
- Performance monitoring
- Wireless communication
- Extensive sensor data

## Recent user reviews (10 of 35)

All indexed reviews: https://appshunter.io/ios/app/obd-ii-command-diagnostic/id1335337783/reviews.md

### 1/5 — Don’t buy waste of money

*2022-07-06, version 2.3*

This app does not work need my money back

### 1/5 — Does not work

*2020-09-02*

Car had the errors and this app did not pick and i paid for the application. Free apps shows the errors. Just download the auto doctor app instead.

### 1/5 — No good

*2019-11-23*

I don’t remember what I paid but it was too much. Does not work. Tells me the check engine light is off but it is definitely on. Free version of auto doctor works much better.

### 1/5 — App issue

*2019-09-12, version 2.3*

This app won’t work  . It’s not connecting 
Wondering if I can get a refund

### 1/5 — Doesn’t work not at all

*2019-07-16, version 2.3*

I want my money back waste of time app

### 1/5 — Useless

*2019-05-09, version 2.3*

Useless useless useless useless useless useless useless useless

### 1/5 — Disapointing

*2019-03-21, version 2.3*

Not worth it.

### 1/5 — Doesn’t work with Bluetooth

*2019-03-13*

The app cannot connect to Bluetooth, it is useless for me. I didn’t find any way to get support from developer. If I don’t get a refund I will initiate dispute from the credit card.

### 1/5 — Won’t connect

*2019-02-04, version 2.3*

The app won’t connect to my obd device, it’s an ELM Bluetooth

### 1/5 — Please refund app doesn’t work

*2018-12-29*

Would not connect with Bluetooth

## Frequently asked questions about OBD

### What does the OBD-II Command Diagnostic app do?

This app turns your smartphone into an advanced automotive scanner. It allows you to monitor your car's engine data in real-time, read and clear OBD fault codes, and track various performance metrics wirelessly.

### What are the key features of this car diagnostic app?

Key features include wireless communication with your vehicle via WiFi or Bluetooth OBD2 adapters, real-time display of engine speed, vehicle speed, fuel economy, and numerous sensor data points. It also allows you to scan for trouble codes and view freeze frame data.

### How much does the OBD-II Command Diagnostic app cost?

The application is a paid app. You will need to purchase the app itself. Additionally, a compatible third-party OBD2 hardware interface (WiFi or Bluetooth adapter) must be purchased separately to communicate with your vehicle.

### What vehicles are compatible with this app?

The app supports all OBD-II and EOBD compliant vehicles sold worldwide. This includes cars and light trucks manufactured in the USA since 1996, and gasoline vehicles registered in the EU after January 1, 2001, and diesel vehicles registered in the EU after January 1, 2004.

### Can I use any Bluetooth OBD adapter with this app?

No, the app does not work with older Bluetooth 2.x or 3.x adapters due to hardware limitations. If you are using a Bluetooth adapter, please ensure it is Bluetooth 4.0 or newer for compatibility.

## Version history (last 4 releases)

### 2.3 — 2019-01-25

- Improve Bluetooth and Wifi connectivity stability
- Add support to latest iOS version
- Enhancement

### 2.2 — 2018-10-01

- Support new iOS version and new iOS devices
- performance enhancement

### 2.1 — 2018-06-12

-Add new metric support: Fahrenheit and MPH.
-Optimize the wifi/bluetooth connection.

### 2.0 — 2018-01-22

No release notes.

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All apps by 纯圣 刘: https://appshunter.io/developer/551352265

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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 2026-06-10.*