OBD Fusion

OBD Fusion

OCTech, LLC · 4.6 ★ · A$14.99

Screenshots

Description

OBD Fusion is an app for your car that allows you to read OBD2 vehicle data directly from your iPhone or iPad. You can clear your check engine light, create custom dashboards, read diagnostic trouble codes, estimate fuel economy, and much more!

Is your check engine light on? Do you want to monitor fuel economy and usage in your vehicle? Do you want cool looking virtual dashboards on your iPhone or iPad? If so, then OBD Fusion is the app for you! OBD Fusion is used by professional mechanics, do-it-yourself mechanics, and vehicle owners who want to monitor their vehicle and daily driving habits. Drive smarter, improve your fuel economy, and keep your engine healthy!

IMPORTANT NOTE: You must have a Wi-Fi ELM327 compatible adapter or compatible Bluetooth LE adapter such as Veepeak BLE/BLE+ 4.0 adapter, Carista BLE adapter, OBDLink MX+, OBDLink CX, Tonwon BLE adapter, LELink BLE adapter, Viecar BLE adapter, Lonauto adapter, Vgate iCar Bluetooth 4.0, BAST BLE adapter, Kiwi 3/4 to use this app. OBD Fusion is not compatible with generic ELM Bluetooth scan tools. Checkout additional adapters here: https://www.obdsoftware.net/software/obdfusion

OBD Fusion supports all OBD2 and EOBD vehicles sold worldwide. If you're not sure whether your vehicle is OBD2 or EOBD compliant, see this page for more information: https://www.obdsoftware.net/knowledgebase/obd2compliant. OBD Fusion can also connect to some JOBD vehicles that don’t support standard OBD2 protocols.

Electric vehicles (EVs) are not required to have OBD2 diagnostics since they are emissions exempt. If you are interested in using OBD Fusion on an EV, contact us first to inquire about support.

OBD Fusion has a ton of features including:
- Read and clear emissions-related trouble codes (fault codes) and your Check Engine Light (MIL)

- View vital driving information on your CarPlay screen. Note that real-time gauges are not supported by CarPlay, so you can't view your OBD Fusion pages such as dashboards on CarPlay.
- With optional enhanced diagnostic add-ons, you can read and clear enhanced trouble codes on other modules such as ABS, SRS, etc. and read transmission temperature. An enhanced diagnostic add-on is required for this functionality.
- Real-time dashboard display with fully customizable gauges. Create your own dashboards with the gauges that you want to see.
- Performance calculations for 1/4 mile and 0-60 mph track times
- Fuel economy MPG (US and UK), l/100km or km/l calculation
- Full diagnostic report that can be stored and shared
- Real-time graphing of multiple signals
- Real-time data logging and playback
- Multiple trip meters

- Log data to CSV file
- Create custom enhanced PIDs
- Includes some built-in enhanced PIDs for GM vehicles
- Display Boost pressure in real-time
- Display Engine Power and Torque
- Display calculated Air-to-fuel ratio
- Display battery voltage

- Read freeze frame data

- Fully customizable units including English, Imperial, and Metric units

- Over 250 supported PIDs

- Display vehicle information including VIN and calibration ID

- Emissions readiness for each US state. Find out if your car will pass emissions inspection.
- Oxygen Sensor Results (Mode 05)

- On-board Monitoring Tests (Mode 06)

- In-performance Tracking Counters (Mode 09)

- GPS tracking - plot vehicle parameters on a map
- Integrated iCloud and Dropbox functionality
- Available in English, Spanish, French, Italian, German, Czech, Greek, Chinese, and Portuguese
- Manufacturer specific Enhanced Diagnostics are available for certain vehicles through In-App purchases.

  • * Continued use of GPS running in the background can dramatically decrease battery life.

OBD Fusion is brought to you by OCTech, LLC, the makers of TouchScan and OBDwiz.

OBD Fusion is a trademark of OCTech, LLC registered in the U.S.

Developer

OCTech, LLC

Developer ID: 650684935

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What's New

Version 7.2.0 · 12 Apr 2026

• Added enhanced diagnostics for 2025 and 2026 Mazda vehicles. • Added support for state displays to user-defined PIDs. A state display is a textual value that's mapped to a numeric value (e.g. 0 = "Off", 1 = "On"). • Added support for state displays to digital gauges. • Digital gauges can now be rectangular and are no longer restricted to being square. • Made improvements to distance calculations and added a distance calculation method preference. • Multiple bug fixes and improvements.

Ratings & Reviews

App Store

4.6

704 ratings

N/A downloads

Google Play

4.0

3,042 ratings

100,000+ downloads

5★
63%
4★
12%
3★
6%
2★
1%
1★
17%

Recent Reviews

Lggg168

App Store

Compatible OBD

Hi. Can someone point me in right direction to a scanner that works with this app, mine isn’t connecting to the car

18 May 2026

sam chafin

Google Play

keeps disconnecting from Bluetooth OBD2 dongle, have used this app for many years but now all the sudden it keeps disconnecting from the dongle. they don't go works with other OBD2 apps but for some reason it quit working with this one. it will connect I'll start to try to read codes and then it disconnects every time. makes it unusable.

18 May 2026

Stephen Yabut

Google Play

⭐⭐⭐⭐ (4/5) OBD Fusion is an excellent technical diagnostic app for monitoring my 2008 Toyota Prius, paired via a Veepeak OBDCheck BLE. It can be finicky to connect if booted in the wrong sequence. It has a steep learning curve and a complex interface. Tracking hybrid data points like block voltages or inverter temps requires a paid "Enhanced Diagnostics" add-on. Still, as a scientist, I find the unlocked tracking resolution and logging granularity to be an excellent analytical value!

16 May 2026

Brent Moser

Google Play

this app is identical to OBDLink that comes with your Bluetooth OBD Link interface . Don't bother

13 May 2026

Shawn Schoenherr

Google Play

I'm using a cheap little plug in to the OBD connector called Dicknos Elm327 mini Bluetooth that I got for 8 bucks from Amazon for two of them and it works better than any other cheap scanner it's a 100% upgrade because now I can monitor the cooling temperature sensor the O2 readings the maff and map readings as well as the catalyst and the EVAP system while all the car is running and it's accurate great app it was worth the $5 thank you

29 Apr 2026

Chris a Quality guy

Google Play

can not see kia transmission fluid temperature

18 Apr 2026

b$&m

App Store

Won’t read a commode

Won’t read a vy commodore

11 July 2025

Melfyaus

App Store

CarPlay PIDs

Absolutely love this app. Highly configurable plus you can view the data on CarPlay. The developer is responsive to emails and suggestions, and may just offer to add features to meet your specific needs. Do yourself a favour and take a look at it.

3 June 2024

Rixta 250

App Store

Best overall for my use

Ive tried all of them. I have a 2024 Toyota and whilst it’s not listed they have the same model as a 2021 which is when my model changed. I paid extra for the Toyota enhancement diagnostics and everything was listed and ready. Simple clear readouts and not overwhelming to change the gauges etc. I wish I knew about this before any previous purchases. Make sure you have one of their supported adapters. I use the Kiwi3. I’ve never written a review so I felt compelled after this. Yes it costs money. Yes the enhancements for certain models cost money. But you get what you pay for and there seems to be regular support on updates for this app unlike many others I highly recommend it. I’ve deleted all the other apps like dash command that was just a pain to setup nicely but that’s just me

3 June 2024

Stu Mur

App Store

Deceitful. $15 gets you a toy app. Then pay WAY more for anything useful.

Just another dodgy business model to access your wallet. Do yourself a favour - just head STRAIGHT to CAR SCANNER PRO and download that - FAR superior to this. You figure the $15 download fee will give you enhanced diagnostics.. only to find it gets you almost nothing - just the simplistic app with nothing advanced to fix your car with. Pay much more for those as ‘options’, and that’s IF your car is supported, which mine wasn’t. So I just wasted $15. That’s a big zero from me. For the win: just get the FANTASTIC Car Scanner Pro app.

15 Feb 2024

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