Comparison

Diag vs BimmerObd

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

Head to head
About

Diag

This diagnostic software package is designed for BMW vehicles. It requires the MaxiAP200 main program to function. Access detailed vehicle diagnostics and information.

Highlights
  • BMW vehicle diagnostics
  • Requires MaxiAP200
  • Diagnostic software package
  • Vehicle information access
Features
Read full description

Diagnostic software package for BMW vehicles, which requires to work with the main program MaxiAP200 together.

About

BimmerObd

Transform your phone into a car diagnostic tool with a compatible OBD-II adapter. Read trouble codes, view live sensor data, and access an offline library for code explanations. Perform service resets and generate PDF reports for your vehicle's records.

Highlights
  • Read and clear trouble codes
  • Offline code library with explanations
  • Live sensor data display
  • Battery health monitoring
  • Readiness and freeze frame data
  • Service resets and guides
  • PDF report generation
  • Multi-vehicle garage
Features
Read full description

Turn your phone into a capable car diagnostic tool. Connect a standard, compatible Wi-Fi OBD-II adapter and read what your vehicle's computer is really reporting — trouble codes, live sensor data, readiness monitors and more. WHAT YOU CAN DO - Read and clear trouble codes. Scan the engine and other control modules for current, pending and permanent diagnostic trouble codes, then clear them after a repair. - Understand every code. A built-in offline library explains what each code means, its likely causes, common symptoms, suggested fixes and a typical repair cost range. No internet connection needed. - Watch live data. Real-time engine speed, vehicle speed, coolant and intake temperature, engine load, throttle position, fuel trims, airflow, timing and more on smooth custom gauges and charts. - Check battery health. Follow charging voltage with clear resting, cranking and charging readouts. - Readiness and freeze frame. See which emissions monitors are ready before an inspection, and view the sensor snapshot captured when a fault was set. - Service resets and guides. Step-by-step guidance for common maintenance procedures. - Reports. Save any scan and export a clean PDF to share with a workshop or keep for your records. - Garage. Store several vehicles and switch between them in a tap. - Knowledge base. Plain-language articles that explain codes, monitors and how the whole system works. COMPATIBILITY Works with most vehicles that support the OBD-II standard — generally cars and light trucks sold from 1996 onward in North America, and from 2001 (petrol) or 2004 (diesel) onward in Europe. Real-time features require a compatible Wi-Fi OBD-II adapter, sold separately by third parties. Demo Mode needs no hardware at all. PRIVATE BY DESIGN Everything runs on your device. No accounts, no sign-ups, no ads and no tracking. Your vehicle data, code lookups and reports stay on your phone. A NOTE This is an independent product and is not affiliated with, endorsed by or associated with any vehicle manufacturer or adapter maker. Diagnostic information is provided for guidance only — always confirm any repair with a qualified technician. Subscription Information: . Payment will be charged to your Apple ID upon purchase confirmation. . Subscriptions automatically renew unless canceled at least 24 hours before the current period ends. . Renewal charges occur within 24 hours before the current period ends. . Manage or cancel subscriptions in your App Store account settings. . If a free trial is offered, unused portions will be forfeited upon subscription purchase. Privacy Policy: https://doc-hosting.flycricket.io/lntm-s-privacy-policy/4d4e0876-516c-428c-b630-4e9ccd29f174/privacy Terms & Conditions: https://doc-hosting.flycricket.io/lntm-s-terms-conditions/635273cf-17ef-4330-ba8b-00940c49d9eb/terms

Screenshots

Diag4 screens
BimmerObd4 screens

Verdict

The call

The clearest difference is rating: BimmerObd at 5.0 against Diag's 2.8. BimmerObd also leads on update cadence (every 2 days vs every 2 months). Diag's advantage is in-app purchases (none vs 3) and ratings volume (23 vs 1). 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. BimmerObd sells 3 in-app purchases, starting at $8.99 per 7 days. Diag asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

BimmerObd holds the better App Store score, 5.0 against 2.8. That said, the two scores are not equally well evidenced: Diag has 23 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Diag ships an update every 2 months, BimmerObd every 2 days. The most recent releases landed on November 4, 2026 and October 28, 2026 respectively.

Scorecard6 real differences · 4 level
Diag versus BimmerObd: the parameters behind the verdict, then further details
ParameterDiagBimmerObd
PriceFreeFree
Rating2.8 (23 ratings)5.0 (1 ratings) — better
Positive reviews9.1% of reviews—
Number of ratings23 — better1
Update frequencyEvery 2 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size582 MB5 MB
Age rating4+4+
DeveloperAutel Intelligent Technology Co., Ltd.Nguyen Tra My Le

In-app purchases

None

Diag

No in-app purchases

3 purchases

BimmerObd

Subscriptions3
  • Premium Membership Weekly$8.997 Days
  • Premium Membership Monthly3 Days trial$19.991 Month
  • Premium Membership Yearly$49.991 Year

Questions

Is Diag free?
Diag is free to download, with no in-app purchases.
Is BimmerObd free?
BimmerObd is free to download, with in-app purchases available.
Which has better reviews, Diag or BimmerObd?
BimmerObd is rated higher. Diag averages 2.8 out of 5 from 23 ratings, while BimmerObd averages 5.0 from 1 ratings.
Do Diag or BimmerObd have ads?
Neither Diag nor BimmerObd shows ads.
Which is updated more often, Diag or BimmerObd?
Diag ships an update every 2 months, and BimmerObd every 2 days. Most recently, Diag was updated on November 4, 2026 and BimmerObd on October 28, 2026.

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