Legacy Store

OBD Fusion
  • Category: Travel
  • First released: June 2, 2013
  • Versions: 7 archived
  • Installable: 6 of 7
  • Availability: Still on the App Store ↗
  • Seller: OCTech, LLC

Requirements: Compatible with iPhone and iPod touch. Requires iOS 9.0 or later.

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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.

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To install apps directly onto this device, it must be jailbroken with AppSync installed.
4.3.0 (1096)
Requires iOS 9.0+
59.4 MB · Watch app Encrypted Install Download
5.31.0 (1289)
Requires iOS 12.0+
27.8 MB Install Download
6.7.0 (1334)
Requires iOS 15.0+
November 20, 2024
39.2 MB Install Download
6.8.0 (1337)
Requires iOS 15.0+
January 14, 2025
39.6 MB Install Download
6.9.0 (1340)
Requires iOS 15.0+
February 21, 2025
39.6 MB Install Download
6.10.0 (1345)
Requires iOS 15.0+
May 8, 2025
40.0 MB Install Download
6.11.0 (1347)
Requires iOS 15.0+
June 24, 2025
40.8 MB Install Download

Bundle Size Over Time

Bundle size over time39.2 MB — November 20, 2024. 39.6 MB — January 14, 2025. 39.6 MB — February 21, 2025. 40.0 MB — May 8, 2025. 40.8 MB — June 24, 202510.2 MB20.4 MB30.6 MB40.8 MB39.2 MB — November 20, 202439.6 MB — January 14, 202539.6 MB — February 21, 202540.0 MB — May 8, 202540.8 MB — June 24, 2025Nov 2024Jun 2025

Chart History

Top Paid View chart ›
Peaked at #95 (July 23, 2019) · 1 archived capture · Jul 2019
Top Paid · Travel · iPad View chart ›
Peaked at #1 (June 30, 2021) · 27 archived captures · Jun 2021 – Sep 2021
Top Paid · Travel View chart ›
Peaked at #3 (July 1, 2021) · 27 archived captures · Jun 2021 – Sep 2021
Top Grossing · Travel · iPad View chart ›
Peaked at #5 (June 30, 2021) · 27 archived captures · Jun 2021 – Sep 2021
Top Grossing · Travel View chart ›
Peaked at #13 (July 16, 2021) · 27 archived captures · Jun 2021 – Sep 2021

Archived Reviews

8 of 25
Great App
     
by Mathwiz12345 · February 7, 2026

Works plug-and-play with my Bluetooth adapter for 3.0L Duramax. Custom PIDs pull slip RPM, EGT, trans temp, boost, oil pressure, plus emissions stuff like DEF level, DPF soot load, regen status—essential for towing. Community PID files and forums make setup easy.

Love it
     
by Drag Drive Repeat · June 12, 2026

Use it each time I drive my LS swapped C10

Wonderful app, one request
     
by Jake freed · February 14, 2026

I used this app to create a drive analysis script that runs through shortcuts, I currently have to auth through Dropbox and download files before I can use them in the script locally If there was a shortcut action to export the csv of the last data logs that would be amazing. Regardless this is an amazing app for what it does.

No Dashboard CarPlay integration
     
by WCAU74 · June 24, 2026

The app haves a lot of configuration tools and great dashboards, however it is not worth the purchase as the Apple CarPlay integration is terrible. You cannot monitor the information setup in dashboards with Apple CarPlay and that makes this a 2 star purchase. If the app had dashboard display for CarPlay, it would be well worth the $10 purchase price.

Mazda Extended Support is terrible
     
by Phinky · May 13, 2026

They don’t tell you what extended PIDs are supported until after you pay $15 for the license. I paid to get information to diagnose my AC issues on a 2019 3, and none of the relevant PIDs are even available through this app. No option for a refund.

Great app!
     
by Rayray.650 · March 6, 2026

Love this app

Not worth it
     
by Rain City Music · January 15, 2026

So I downloaded this, it’s a little bit clunky getting it to work with iOS. And then I find out that Nissans are not included in the program. You can upgrade of course for another $75 if you want a template/macro that is only updated up to 2021. So I don’t recommend it.

NOT the same as OBD Fusion
     
by itunes-comment · April 21, 2026

They advertise wrongly that the “OBD Fusion” paid app “contains the same functionality” as this free OBDLink app. Far from it. Explain that there are significant differences where both apps may be required. You got my money for your MX+ hardware over this misleading point. But no high rating.

Period reviews recovered from Apple's customer-review feeds via the Wayback Machine.