Comparison

OBDeleven vs D

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OBDeleven

Transform your smartphone into a powerful car diagnostic and customization tool. Easily scan trouble codes, monitor live data, and access advanced features like coding and service functions for a wide range of car brands. Save time and money on car maintenance and personalization.

Highlights
  • Basic OBD2 diagnostics
  • Live data monitoring
  • Advanced diagnostics for licensed brands
  • One-Click Apps for customization
  • Vehicle history and VIN data
  • Maintenance and comfort features
Features
Read full description

More than a scanner – OBDeleven app is your car's everyday diagnostics, customization, and maintenance companion. Read and clear fault codes, monitor live data, and unlock hidden features in your car – no technical skills required. Trusted by over 6 million drivers and officially licensed by Volkswagen Group, BMW Group, Toyota Group, Ford (US models), and Mercedes-Benz, OBDeleven helps you save time and money on car diagnostics, maintenance, and repairs. The OBDeleven app works with OBDeleven 3 and ELM327 devices. ELM327 supports basic OBD2 diagnostics, while OBDeleven 3 unlocks advanced diagnostics, coding, and customization features. OBDELEVEN FEATURES For all car brands: • OBD2 diagnostics: Read and clear engine and transmission fault codes • Live data: Monitor real-time data like engine speed, temperature, and load • Vehicle information: Access VIN data, mileage, and key car details For Volkswagen Group (Audi, Volkswagen, Škoda, SEAT, Cupra), BMW Group (BMW, MINI), Toyota Group (Toyota, Lexus), Ford (US models), Mercedes-Benz: • Advanced diagnostics: Scan all control units and detect issues across your vehicle • Live data: Track detailed real-time data from multiple systems • One-Click Apps: Customize your Audi, Volkswagen, Škoda, SEAT, Cupra, BMW, MINI, Toyota, Lexus, Ford, and Mercedes-Benz with pre-made coding options • Manual coding & adaptations (PRO): Perform coding, long coding, adaptations, and advanced configuration for Volkswagen Group vehicles • Vehicle access: View detailed vehicle information, history, and specifications • Maintenance & driving features: ○ Car health report ○ Trip tracker ○ Maintenance reminders ○ Emissions readiness check ○ Hybrid battery check ○ Car alerts ○ Mileage checks and more GETTING STARTED 1. Plug the OBDeleven device into your car’s OBD2 port 2. Create an account in the OBDeleven app 3. Connect and start diagnosing SUPPORTED VEHICLES Works with most cars using CAN-bus protocol (mainly from 2008 onwards). Full list: https://obdeleven.com/supported-vehicles COMPATIBILITY • OBDeleven 3 device (full functionality) • ELM327 device (basic diagnostics only) • iOS 17.0 or newer LEARN MORE • https://obdeleven.com • https://support.obdeleven.com • https://forum.obdeleven.com Terms and Conditions: https://obdeleven.com/terms-and-conditions Privacy Policy: https://obdeleven.com/privacy-policy Terms of Use (EULA): https://apple.com/legal/internet-services/itunes/dev/stdeula/

About

D

Features
Read full description

D-SYNC ECU is the ultimate calibration platform for Mercedes-AMG and Mercedes-Benz owners who demand more from their vehicles. Unlock your car's full potential — D-SYNC delivers a seamless, wireless tuning experience straight from your phone. No laptop, no cables, no dealer. SUPPORTED ENGINES • M177 4.0L V8 BiTurbo — C63 S, E63 S, S63, GT 63 S, GLE 63 S, GLC 63 S, and more • M178 4.0L V8 BiTurbo — AMG GT / GT S / GT C / GT R / Black Series • M276 3.0L V6 BiTurbo — C43, E43, E450, GLC43, GLE43, S400, and more • M157 / M278 5.5L & 4.7L V8 BiTurbo — S63, CLS63, GLE63, GLS63, ML63, E63, and more • M133 2.0L Turbo — CLA45, A45, GLA45 (Gen 1 / 1.5) • M256 3.0L Turbo inline-six — E53, CLS53, GT53, GLE53 and 450 models PLUS TRANSMISSION TUNING AND CPC TUNING • 9G-TRONIC (VGS-NAG3) — write calibrations directly to the 9-speed transmission controller • CPC NG - write customized calibrations to a replaced CPC NG module. Compatible control units: Bosch MED17.7.5 · MED17.7 V6LA · MED40AMG · MED17.7 (M157/M278) · Bosch MG1 (M256) · VGS-NAG3 (9G) · CPCNG HIGH-SPEED DATA LOGGING • Ready-made logging presets per engine, plus build-your-own profiles (up to 20 channels) • Boost, intake temps, knock, AFR/lambda, timing and 70+ parameters in real time • Auto-records your pull and saves it as a CSV tagged by VIN, date and time • Powerful viewer — multi-channel overlay, drag-to-read cursor, time-axis zoom and stacked view • One-tap cloud sharing so your tuner can refine the calibration LIVE HUD Turn your phone into a full-screen instrument cluster while you log. Big, glanceable gauges with per-cylinder knock and misfire, camshaft timing, and automatic over-limit alerts — portrait or landscape, with dedicated layouts per engine. Display only: it never touches your recording. EXHAUST POP & BANG TUNER (AMG only) Dial in custom exhaust pops & bangs on OTS tunes — presets plus advanced control, applied at flash. DTC DEACTIVATION Deactivate diagnostic trouble codes across all firmware versions, applied at flash. VEHICLE CODING (beta) Activate hidden features and adjust factory coding — including W205 brake/model coding and AMG 63 exhaust-flap coding. Supported coding is listed at d-syncworks.com. CONTROL-UNIT REPLACEMENT & CLONING (beta) Clone-write the next-generation Common Powertrain Controller (CPC NG), including control-unit replacement. AIRMATIC SUSPENSION CONTROL (beta) Dial in ride height on supported AIRMATIC chassis — AMG GLE/GLS (W167), S-Class (W222) and E-Class (W213). Save your favorite stances and recall them in a tap. ON-BOARD DIAGNOSTICS Read and clear fault codes with plain-language descriptions, right from the app. BUILT FOR AMG Every detail is engineered around the Mercedes platform — automatic ECU identification, per-vehicle configuration, and a tuner ecosystem that speaks your language. WHAT YOU NEED • D-SYNC D1 Bridge — WiFi hardware adapter (sold separately at d-syncworks.com) • A supported Mercedes-AMG / Mercedes-Benz listed above • A D-SYNC account and license Questions or support? Visit d-syncworks.com Note: M256 flashing requires a one-time bench unlock before wireless flashing is available. ** This racing product is for competition, closed-course use only. *** Use of this software may void portions of your vehicle's factory warranty. Some items may not be legal for on-highway use. D-SYNC makes no guarantees as to the legality of any parts used on highway vehicles and accepts no responsibility for compliance with your vehicle's factory warranty.

Screenshots

OBDeleven4 screens
D4 screens

Verdict

The call

The clearest difference is in-app purchases: D at none against OBDeleven's 10. D also leads on update cadence (every 5 days vs fortnightly) and iOS requirement (15.0 vs 17.0). OBDeleven's advantage is chart position (#124 vs unranked). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OBDeleven sells 10 in-app purchases, starting at $69.99 per year. D asks for nothing beyond the download.

UpkeepUpdate frequency

OBDeleven ships an update fortnightly, D every 5 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 7 level
OBDeleven versus D: the parameters behind the verdict, then further details
ParameterOBDelevenD
PriceFreeFree
Rating4.3 (1.6K ratings) — better—
Positive reviews14.1% of reviews—
Number of ratings1.6K — better—
Update frequencyFortnightlyEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#124 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size252 MB43 MB
Age rating4+4+
DeveloperOBDeleven UABLUN LIU

Bugs and requests

OBDeleven

Reported bugs

3 issues
  • App crashes on login
  • Inability to change vehicle type
  • Functionality breaks after updates

Requested features

3 requests
  • Restore free access to core features
  • Improve compatibility with more vehicle makes/models
  • Add more diagnostic and coding capabilities

D

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

OBDeleven

Subscriptions2
  • PRO plan$69.991 Year
  • ULTIMATE plan$239.991 Year
One-time8
  • 10 Credits$3.99
  • 100 Credits$29.99
  • 1000 Shadowing Credits$34.99
Show 5 more
  • PRO plan subscription$69.99
  • 500 Credits$90.99
  • 5000 Shadowing Credits$139.99
  • ULTIMATE plan subscription$239.99
  • 10000 Shadowing Credits$269.99
None

D

No in-app purchases

Questions

Is OBDeleven free?
OBDeleven is free to download, with in-app purchases available.
Is D free?
D is free to download, with no in-app purchases.
Do OBDeleven or D have ads?
Neither OBDeleven nor D shows ads.
Which is updated more often, OBDeleven or D?
OBDeleven ships an update fortnightly, and D every 5 days. Most recently, OBDeleven was updated on November 7, 2026 and D on November 5, 2026.

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