# Engine Link HD -OBD II vehicle monitor & diagnosis

> OBD-II vehicle monitor and diagnostics tool for iPad. (iPhone/iPad app by K SOLUTION LLC.)

- Source: https://appshunter.io/ios/app/engine-link-hd-obd-ii-vehicle-monitor-and-diagnosis/id621127225 (this page in markdown: same URL + `.md`)
- Developer: [K SOLUTION LLC](https://appshunter.io/developer/289670447)
- Category: Utilities, Sports
- Price: $6.99
- Rating: 5.00/5 from 1 App Store ratings · 20 written reviews indexed
- Age rating: 4+
- Requires: iOS 7.0 · 9 MB
- Languages: English
- Released: 2013-03-22
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/engine-link-hd-obd-ii-vehicle-monitor-and-diagnosis/id621127225/reviews.md

## What is Engine Link HD?

The only iOS app does custom PID, now supports Torque custom PID file. EngineLink will turn your iPad into vehicle / car performance / diagnostics tool and scanner that uses an OBD II WIFI adapter or a low Energy Bluetooth adapter (LELink, Carista, Viecar) to connect to your OBD2 engine management / ECU. 

BENEFITS: 
* Emission Test. 
* See what your car is doing in real-time. 
* Read and clear OBD fault codes. 
* Display car performance and sensor data. 
* Customizable gauges, showing only the data you were interested in 
* Top Ranked Car App 
* No in-app purchase and No subscription fees! 
__________________ 


FEATURES: 
+ Show and reset a DTC / CEL / fault code (current code, pending code and history code) like a scan tool 
+ Graph data 
+ MPG widget to plot real time fuel efficiency 
+ Heads up display / HUD mode for night time driving (mirror the display on your vehicle's windshield) 
+ Can read Transmission Temperatures (vehicle dependant) 
+ Horsepower/HP & Torque / acceleration 
+ Boost / vacuum gauge 
+ Engine speed / Engine RPM / Engine Load /Coolant / Fuel Tank 
+ Customizable dashboard 
+ Full configurable GUI with user choice of dial gauge, bar gauge, plot gauge, digital gauge, and on-off gauge as display elements 
+ Full custom PID support. 
+ Formula support. 
+ Preloaded GM and Ford PID libraries 
+ Preloaded standard PID library and Prius PID libraries . 
+ User can add more libraries within the app or by using iTunes File Sharing 
+ Multiple ECU support. Non-CAN, 11-bit CAN, and 29-bit CAN ECU bus types 
+ Multiframe data support 
+ Background color option 
+ Email user log function (access by long pressing custom PID screen) 
+ Multiple PID formula support 
+ Save and load layout
+ 0-60MPH and 0-100kM/h timer and 1/4 timer.
__________________ 

EngineLink supports all OBD-II and EOBD compliant vehicles sold worldwide. If in doubt check with your manufacturer first or look for 'OBD2' on written on a big white label in your engine bay. 

The app needs an ELM compatible Wi-Fi or Bluetooth Low Energy (for iPad3 and later) adapter to work. 

You can check Developer WebSite for Adapter Guide: http://www.outdoor-apps.com/enginelink.html

*** If you have Bluetooth OBD adaptor, please contact support@ksolution.org for instruction before you purchase this app. 

Drop us an email for any suggestions/questions you may have at support@ksolution.org. We will answer.

*** Our email address ends with org. Please use the correct address to ensure timely response.

## Key features

- Real-time vehicle data monitoring
- Read and clear OBD fault codes
- Customizable gauges and dashboard
- MPG widget and fuel efficiency tracking
- Heads-up display (HUD) mode
- Supports custom PID and multiple ECUs

## Recent user reviews (10 of 20)

All indexed reviews: https://appshunter.io/ios/app/engine-link-hd-obd-ii-vehicle-monitor-and-diagnosis/id621127225/reviews.md

### 5/5 — Great for custom PID

*2019-01-23, version 6.5*

I chose this app to see custom PIDs for my Bolt. Easy to use and very clean, clear presentation. Customer support is extremely responsive and accommodating.

### 5/5 — Enginelink

*2016-04-06, version 5.1*

I bought the LELink adapter and app last year when my Check engine light came on in my Ford Fusion.
Plugged in the adapter and ran the app on my iPad, looked up the code and bought a fuel canister valve that is on the front of the engine. After replacing the valve, I reset the light that has never come on again.
I emailed the support team regarding the app for my iPhone and they sent a code to install it.  
Saved about $200.00 using this simple to use tool. Saved time and coins. No regrets.

### 5/5 — Works perfectly!

*2016-01-31, version 5.1*

I use with the iCar wifi interface. The app sets up automatically and works great.

### 1/5 — Doesn't work, waste of money

*2015-12-21, version 5.1*

Bought the exact adapter it told me to, didn't work. What a waste of money.

### 2/5 — Potential is there

*2015-09-25, version 5.0*

There is potential there, but doesn't tell me much for my 2003 Honda Odyssey

### 4/5 — Very useful, but still has room to grow.

*2015-03-20, version 4.2*

I find the customizable feature very useful.  Some features do not work, I don't know if it is the reader or the app.  That said, it does >85% of what I want.  Oh the Hud feature is awesome for the early morning/pre-sun up.  A detailed owners manual would be nice though.

### 1/5 — crashes with custom PIDs

*2015-01-30, version 4.2*

custom PIDs added to the screen seem never to work (do not update with live data).  after adding a few the app crashes and will not work again until I delete and reinstall it

### 2/5 — doesn't work well

*2014-12-20, version 4.2*

This successfully connected to the recommended BT LE adapter, and sometimes showed approximately correct RPM.

Frequently the gauges would just stop working and show a constant value with no error message.

The email logs function did nothing.

I'm going to contact support.

### 1/5 — Not Bluetooth compatible

*2014-04-10, version 3.4*

Not working no help from site waste of money don't buy

### 2/5 — No funciona bien en ipad

*2013-10-16, version 3.4*

Compre esta aplicación para usarla en mi iPad, pero no me funcionan todos sus componentes, parece como sí el software no bajó completo.

## Frequently asked questions about Engine Link HD

### What is Engine Link HD?

Engine Link HD is an iOS application that transforms your iPad into a vehicle performance and diagnostics tool. It connects to your car's ECU via an OBD II adapter to display real-time data and read/clear fault codes.

### Does Engine Link HD have ads?

The provided data does not indicate the presence of advertisements in Engine Link HD. It is described as having no in-app purchases or subscription fees.

### How much does Engine Link HD cost?

Engine Link HD is a paid application priced at $6.99. There are no additional in-app purchases or subscription fees required to use its features.

### What devices does Engine Link HD support?

Engine Link HD is designed for iPads. It requires an ELM compatible Wi-Fi or Bluetooth Low Energy adapter to function.

### How often is Engine Link HD updated?

The latest version of Engine Link HD is 6.5, which was last updated on April 26, 2017. Users can check the developer's website for potential future updates.

### What kind of data can Engine Link HD display?

Engine Link HD can display a wide range of vehicle data including engine RPM, coolant temperature, fuel tank level, horsepower, torque, boost/vacuum, and transmission temperatures (vehicle dependent). It also supports custom PIDs for specific data points.

### Can Engine Link HD help with emission tests?

Yes, Engine Link HD can assist with emission tests by allowing you to read and clear OBD fault codes, which are often related to emission system issues.

### What is the user sentiment for Engine Link HD?

Engine Link HD has a highly positive user sentiment, indicated by its rating of 5.0 stars from 1 rating. This suggests users are very satisfied with its functionality and performance.

## Version history (last 1 release)

### 6.5 — 2017-04-26

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

Improve Bluetooth communication.

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All apps by K SOLUTION LLC: https://appshunter.io/developer/289670447

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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.*