Comparison

ECU vs Steer

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

Head to head
About

ECU

Features
Read full description

ECU-18 Manager รจ un'applicazione per la diagnostica e il controllo della centralina ECU-18 installata su irrigatori Casella Macchine Agricole

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
Read full description

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 โ€” then explains it the way an honest mechanic would: in plain language, with no jargon and nothing to upsell you. WHAT YOU GET: โ–  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. โ–  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. โ–  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 โ€” Catalyst System Efficiency Below Threshold". โ–  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. โ–  DASHBOARD LIGHT LIBRARY Every warning light on your dashboard โ€” check engine, ABS, airbag, TPMS, oil, battery โ€” what it actually means, and how urgent it really is. โ–  MAINTENANCE THAT KNOWS YOUR CAR Service intervals based on your VIN and your real mileage, not a generic checklist. Oil changes, filters, brakes, belts. โ–  SAFETY RECALLS We check your VIN against the manufacturer recall database and tell you if your car is affected. โ–  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 โ€” scan, results, AI Mechanic โ€” 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 โ€” $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

ECU2 screens
Steer4 screens

Verdict

The call

The clearest difference is in-app purchases: ECU at none against Steer's 2. ECU also leads on iOS requirement (11.0 vs 26.1). Steer's advantage is update cadence (every 2 months vs every 33 months). On price, ads and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

ECU ships an update every 33 months, Steer every 2 months. The most recent releases landed on October 4, 2026 and October 31, 2026 respectively.

Scorecard3 real differences ยท 5 level
ECU versus Steer: the parameters behind the verdict, then further details
ParameterECUSteer
PriceFreeFree
Positive reviewsโ€”26.7% of reviews
Update frequencyEvery 33 monthsEvery 2 months โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
Monetizationโ€”Freemium
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS11.0 โ€” better26.1
Further details โ€” not scored
Size25 MB26 MB
Age rating4+4+
DeveloperAppleby Italiana SrlSmarters Engineered

In-app purchases

None

ECU

No in-app purchases

2 purchases

Steer

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

Questions

Is ECU free?
ECU is free to download, with no in-app purchases.
Is Steer free?
Steer is free to download, with in-app purchases available.
Do ECU or Steer have ads?
Neither ECU nor Steer shows ads.
Which is updated more often, ECU or Steer?
ECU ships an update every 33 months, and Steer every 2 months. Most recently, ECU was updated on October 4, 2026 and Steer on October 31, 2026.

Other comparisons