Comparison

MODI Mobile Diagnostics vs Steer

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

Head to head
About

MODI Mobile Diagnostics

Features
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MODI is a next-generation mobile diagnostic interface, designed and developed by Abrites. Manufactured by the highest standards in the industry, it has been created with automotive enthusiasts in mind, giving you a vast variety of diagnostic and customization options. MODI allows you to tap into the full potential of your vehicle by unlocking coding functions for your car. Main functionalities: β€’ Vehicle diagnostics β€’ Reading and clearing diagnostic trouble codes β€’ Live data displayed in a graph and table view β€’ Module scan β€’ Coding and customization options β€’ Health Report With MODI, you can read and clear diagnostic trouble codes from your car. A β€œCheck Engine” light popped up on your dashboard and your vehicle is now in emergency mode? Not a problem - with MODI, you can perform diagnostics review the trouble code, clear it, drive your car to the nearby mechanic, or continue your journey! You’ve just collected your car from the service shop and noticed that the service intervals are not reset. With MODI in your glove box, this is not an issue anymore - now you can reset the service intervals on your car all by yourself, quickly and easily. We are officially introducing our newest feature: Health Report. Planning a family trip? With our Health Report feature, you can scan all modules on your vehicle, review the registered trouble codes and understand the state of your car. This will point you to potential problems you may face during your upcoming trip so that you can plan a visit to your mechanic. This feature has the potential to spare you costly roadside assistance and repair bills. With MODI, you are getting much, much more. Coding Features*: BMW β€’ Unlock the β€œM” logo and change other visual elements on the instrument cluster and HUD β€’ Enable full-screen Apple Carplay β€’ Enable/disable the engine Start-Stop system VAG β€’ Enable needle sweep and lap time on the instrument cluster and HUD β€’ Change the startup screen on the instrument cluster/HUD β€’ Enable/disable side-mirror folding and opening on vehicle lock/unlock β€’ Enable wireless Apple Carplay (if the wired function is supported) Peugeot/Citroen β€’ Configure DRL β€’ Enable/disable side-mirror folding and opening on vehicle lock/unlock *The coding features are available only on supported car brands and models. The MODI hardware is Bluetooth-enabled and works with the designated MODI app, available in the Apple Store. You need less than 3 minutes to install your MODI on your car and start using it. How It Works: 1. Connect MODI to your car using the OBD2 port. 2. Download the MODI app on your phone from the App Store. 3. Open the MODI app, select your car brand and access the features and configurations of your car. No in-app purchases or subscriptions are required while you are using MODI. What does this mean for you? You will no longer have to worry about recurring charges, and you will have access to all features of the app without having to pay extra. This will make it easier for you to use MODI and get the most out of it. Have you ever wanted to unlock the full potential of your car? With MODI, you can do just that!

About

Steer

Transform your smartphone into a powerful OBD2 diagnostic tool. Read and clear fault codes, monitor real-time performance metrics, and test your vehicle's acceleration and emissions. Compatible with a wide range of car brands and OBD2 scanners.

Highlights
  • Universal OBD2 scanner compatibility
  • Read and erase fault codes
  • Real-time performance metrics
  • Acceleration and performance testing
  • Emission compliance checks
  • Supports various car brands
Features
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Your car has been trying to tell you something. Steer translates it. Plug the Steer sensor into the port under your steering wheel and the app reads what your car already knows β€” then explains it the way an honest mechanic would: in plain language, with no jargon and nothing to upsell you. WHAT YOU GET: β–  AI MECHANIC Ask anything about your car and get a straight answer. Send a photo of a warning light, a leak on the driveway or a part you don't recognize, or just describe the noise it makes. It knows your exact car and your latest scan. β–  ONE NUMBER, 0 TO 100 Your Steer Score answers "how is my car right now?". No trouble codes to look up, no tables to read. Watch it move over time. β–  PROBLEMS IN PLAIN LANGUAGE Every issue comes with what it means, whether it is safe to keep driving, and what the repair usually costs. Not "P0420 β€” Catalyst System Efficiency Below Threshold". β–  DEEP SCAN 21 systems and 126 live parameters, across every module your car will talk to. Start it, lock your phone, and get a notification when it is done. β–  DASHBOARD LIGHT LIBRARY Every warning light on your dashboard β€” check engine, ABS, airbag, TPMS, oil, battery β€” what it actually means, and how urgent it really is. β–  MAINTENANCE THAT KNOWS YOUR CAR Service intervals based on your VIN and your real mileage, not a generic checklist. Oil changes, filters, brakes, belts. β–  SAFETY RECALLS We check your VIN against the manufacturer recall database and tell you if your car is affected. β–  EVERY OBD2 CAR SINCE 1996 80 makes and thousands of models, 1996 to 2026. TRY IT BEFORE YOU BUY Open the app and tap "Try a real scan". You get the whole experience on a demo car β€” scan, results, AI Mechanic β€” with no sensor, no account and no card. WHAT YOU NEED Steer works with the Steer OBD2 sensor, available at steer.so. It is not compatible with third-party adapters. MEMBERSHIP Free forever: live codes, battery alerts and basic diagnosis. Steer Plus unlocks the unlimited AI Mechanic, full explanations for every issue, predictive maintenance and every car in the household β€” $99/year with a 14-day free trial, or $14.99/month. Terms of Use: https://steer.so/terms Privacy Policy: https://steer.so/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

MODI Mobile Diagnostics4 screens
Steer4 screens

Verdict

The call

The clearest difference is in-app purchases: MODI Mobile Diagnostics at none against Steer's 2. MODI Mobile Diagnostics also leads on update cadence (monthly vs every 6 months) and iOS requirement (15.6 vs 26.1). On price, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Steer sells 2 in-app purchases, starting at $9.99 per month. MODI Mobile Diagnostics asks for nothing beyond the download.

UpkeepUpdate frequency

MODI Mobile Diagnostics ships an update monthly, Steer every 6 months. The most recent releases landed on September 21, 2026 and September 2, 2026 respectively.

Scorecard3 real differences Β· 5 level
MODI Mobile Diagnostics versus Steer: the parameters behind the verdict, then further details
ParameterMODI Mobile DiagnosticsSteer
PriceFreeFree
Positive reviewsβ€”40.0% of reviews
Update frequencyMonthly β€” betterEvery 6 months
AdsNoNo
In-app purchasesNo β€” betterYes
Monetizationβ€”Freemium
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.6 β€” better26.1
Further details β€” not scored
Size66 MB25 MB
Age rating4+4+
DeveloperMODI Abrites Ltd.Smarters Engineered

In-app purchases

None

MODI Mobile Diagnostics

No in-app purchases

2 purchases

Steer

Subscriptions2
  • OBD2 Pro$9.991 Month
  • OBD2 Pro$19.991 Year

Questions

Is MODI Mobile Diagnostics free?
MODI Mobile Diagnostics is free to download, with no in-app purchases.
Is Steer free?
Steer is free to download, with in-app purchases available.
Do MODI Mobile Diagnostics or Steer have ads?
Neither MODI Mobile Diagnostics nor Steer shows ads.
Which is updated more often, MODI Mobile Diagnostics or Steer?
MODI Mobile Diagnostics ships an update monthly, and Steer every 6 months. Most recently, MODI Mobile Diagnostics was updated on September 21, 2026 and Steer on September 2, 2026.

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