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.
OBD Fusion with Vepeak adapter allows you to read and clear codes, monitor real-time stats, and log vehicle performance for your Toyota Corolla 2020
Read before you buy!
druhslawek
You will be well advised to read thoroughly all the information regarding this app as well as interfaces compatible with it, otherwise you’ll end up being able to read your car’s speed, revs and some-such, but not much more. Certainly not be able to clear any codes, which seems to be the primary reason for buying it. So don’t rush, read first.Fine, so months after I bought a compatible interface and realized I still couldn’t do much without spending more money!, I went ahead and bought the in-app extra module supposedly designed specifically for my car model. Did it finally allow me to clear the fault message? Yep... from the app, which now says there are no fault messages. But not from the dashboard, where it’s still proudly lit up in red. Waste of money!!!
Developer Response
Thank you for taking the time to leave a review, but what you are saying is not accurate. You can read and clear codes with our app. The PIDs that you’ll be able to read depend on what your vehicle supports, and most vehicles support much more than speed and RPM. As always, please feel free to reach out to us with any questions and we would be happy to help.
No Advantage over OBDLink (Except CarPlay) and a UI Bug – OBDLink MX+
Sebastian#
It’s an OBDLink clone, apart from CarPlay — I don’t see any real differences, yet the app is paid. Additionally, I encountered an issue when setting values that determine the decimal point position: it was impossible to exit the context menu, and only force-closing the app helped. This can be worked around by adding a new display without changing the decimal formatting; after doing so, the issue no longer occurs during subsequent edits. There is also no Volvo-specific adaptation — I would expect to find all working PIDs in one place instead of spending time researching which ones work and which do not.
Great working App
Mist.ar
Everythink works Well, one of the best obd2 apps on store, worth Every single 0,01$.
• Added enhanced diagnostics for 2026 Ford vehicles. Use the vehicle editor to check support for your vehicle.
• Added some additional Manufacturer PIDs for GM vehicles.
• Made improvements to the Trip Statistics page.
• Multiple bug fixes and improvements.
Version 7.4.0
The developer, OCTech, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
User Content
Identifiers
Usage Data
Diagnostics
Privacy practices may vary based, for example, on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Size
62.1 MB
Category
Travel
Compatibility
Requires iOS 15.0 or later.
iPhone Requires iOS 15.0 or later.
iPad Requires iPadOS 15.0 or later.
iPod touch Requires iOS 15.0 or later.
Apple Vision Requires visionOS 1.0 or later.
Location
This app may use your location even when it is not open, which can decrease device battery life.
