OBD Fusion
by OCTech, LLC
- Travel
- Paid
- Rating
- 4.7
- 19.5K ratings · US storefront
- Top 65%among 74 Travel apps
- Last update
- Jul 16, 2026
- Version 7.4.0
- Size
- 62 MB
- Category
- Travel
- Tracked since
- Oct 9, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
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.
What’s new
Release notes for the latest version, as written by the developer.
- 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.
Rank history
Daily position in the Belize charts. #1 is at the top.
- Best rank
- #1
- Current rank
- #1
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
76/100
Not flagged as small & simple
- Developer size100% · 25
Developer: 1 app on the charts
- Audience size0% · 20
Ratings: 19,539
- App size60% · 10
Size: 62 MB
- Price model100% · 15
Price model: paid
- Demand proof100% · 30
Best rank #1, 154 countries
An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2
How the score worksVersion history
- 7.4.0LatestReleased Jul 16, 2026