OBD Fusion vs WalkDD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OBD Fusion
This app connects to your car's OBD2 port via a compatible adapter to read vehicle data. Monitor fuel economy, clear check engine lights, and create custom dashboards for real-time diagnostics and performance tracking.
- Read and clear OBD2 trouble codes
- Customizable real-time dashboards
- Estimate fuel economy
- Performance calculations (0-60, 1/4 mile)
- Real-time data logging and graphing
- Diagnostic report generation
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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.
WalkDD
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WalkDD takes you on a journey through the most beautiful cities and natural landscapes of the Dresden region — on foot, at your own pace. Whether you're exploring the baroque streets of Dresden, the dramatic rock formations of Saxon Switzerland, or the charming villages along the Elbe, WalkDD guides you every step of the way. CURATED WALKING ROUTES Every route is carefully selected and tested. From city walks to nature hikes, each route offers a unique experience with a clear start and finish. INTERACTIVE MAP Follow your route on a detailed interactive map. See your current location in real time and never lose your way. POINTS OF INTEREST Discover highlights along the route — historic buildings, viewpoints, local gems — each with a description to enrich your walk. MULTILINGUAL WalkDD is fully available in English, German, and Dutch. CURRENT ROUTES INCLUDE: • Dresden — Altstadt, Neustadt, Großer Garten, Blaues Wunder • Saxon Switzerland — Bastei, Schrammsteine, Pfaffenstein, Lilienstein, Gohrisch & Papststein, Rauenstein • Pirna, Moritzburg, Radebeul, Pillnitz and more Lace up your shoes and start exploring.
Screenshots
Verdict
The clearest difference is in-app purchases: WalkDD at none against OBD Fusion's 10. WalkDD also leads on price ($3.99 vs $9.99). OBD Fusion's advantage is update cadence (every 2 months vs every 5 months) and chart position (#4 vs unranked). On ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
OBD Fusion costs $9.99 and WalkDD $3.99 up front. OBD Fusion sells 10 one-off in-app purchases. WalkDD asks for nothing beyond the download.
OBD Fusion ships an update every 2 months, WalkDD every 5 months. The most recent releases landed on November 4, 2026 and October 8, 2026 respectively.
| Parameter | OBD Fusion | WalkDD |
|---|---|---|
| Price | $9.99 | $3.99 — better |
| Rating | 4.7 (20K ratings) — better | — |
| Positive reviews | 59.2% of reviews | — |
| Number of ratings | 20K — better | — |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #4 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 59 MB | 45 MB |
| Age rating | 17+ | 4+ |
| Developer | OCTech, LLC | Michel Loehr |
Bugs and requests
OBD Fusion
Reported bugs
4 issues- Randomly disconnects from vehicle
- Fails to detect or read codes on some vehicles
- Gauge values not updating properly in some cases
- Dashboards reset without warning
Requested features
5 requests- Add CarPlay support
- Improve data logging and graphing capabilities
- Expand vehicle compatibility, especially for non-US models
- Allow saving and restoring dashboard configurations
- Provide more detailed diagnostic information
WalkDD
Not enough reviews yet to summarise bugs or requests.
In-app purchases
OBD Fusion
- Ford 2006 Enhanced Diagnostics$14.99
- Toyota 2005 Enhanced Diagnostics$14.99
- Ford 2005 Enhanced Diagnostics$14.99
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- Toyota 2006 Enhanced Diagnostics$14.99
- Toyota 2007 Enhanced Diagnostics$14.99
- Toyota 2008 Enhanced Diagnostics$14.99
- Toyota 2016 Enhanced Diagnostics$14.99
- Toyota 2017 Enhanced Diagnostics$14.99
- Toyota 2021 Enhanced$14.99
- Toyota 2015 Enhanced Diagnostics$14.99
WalkDD
No in-app purchases









