Comparison

Autmet | OBD2 Scanner vs ProMasters Only

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

Head to head
About

Autmet | OBD2 Scanner

This diagnostic tool connects to your vehicle's OBD data via a Bluetooth device. It allows you to read various ECU data and supports common OBD-II protocols.

Highlights
  • Reads vehicle ECU data
  • Bluetooth OBD device compatible
  • Supports OBD-II protocols
  • Diagnostic tool
Read full description

Autmet puts the core of a professional scan tool in your pocket. Connect an OBD-II adapter, read the codes your car has already recorded, and get a plain-language answer: what it means, what likely caused it, and whether it's safe to keep driving. ■ Read and clear trouble codes Read stored, pending and permanent trouble codes. Clear them and turn off the check engine light in one tap. Works on US vehicles from 1996, European petrol from 2001 and diesel from 2004 — if it has an OBD-II port, it works. ■ 11,000+ trouble codes, 100,000+ explanations Not a bare code-to-text lookup. Our database holds over 11,000 distinct trouble codes and more than 104,000 explanations across 62 brands — Toyota, Volkswagen, BMW, Mercedes-Benz, Ford, Chevrolet, Honda, Nissan, Hyundai, Peugeot, Renault, Porsche and more. The same P0301 can mean different things on different vehicles, so we index by brand, model, year and engine. You get the explanation for your car, not a generic template. ■ AI insight: causes and consequences, not just codes Every code comes with a readable explanation of likely causes and the real risk of continuing to drive. Codes are grouped automatically by powertrain, chassis, body and network, so you see at a glance where the problem sits. Generate a full diagnostic report to save or send to your mechanic — walk in informed. ■ Live data RPM, speed, coolant temperature, intake pressure, oxygen sensors, fuel trim and more, on customisable gauges and graphs. Switch metric/imperial in one tap (km/h ↔ mph, °C ↔ °F, kPa ↔ psi). The whole page refreshes together, so every value comes from the same moment. ■ Check emissions readiness before the test Confirm every readiness monitor is set before you drive to the inspection station — and save yourself a wasted trip. ■ Freeze frame and Mode 6 A snapshot of exactly what the engine was doing when the fault occurred, plus on-board monitor results with test limits for oxygen sensors, catalyst and more — so you can tell "already failed" from "about to fail". ■ Vehicle info and multi-car garage Reads your VIN automatically to identify the vehicle. Keep every car in the household in its own profile, each with its own diagnostic history. ■ Six languages English, 简体中文, Deutsch, Español, Français, Italiano — the interface and all 100,000+ code explanations are fully localised, not partial machine output. — What you need — An ELM327-compatible OBD-II Bluetooth adapter (such as VEEPEAK), sold separately. Plug it into the port under your dashboard and pair.

About

ProMasters Only

This app provides diagnostic tools and information specifically for Ram ProMaster vans. It offers real-time gauge monitoring, trouble code explanations, and a repair log, requiring a separate OBD dongle purchase.

Highlights
  • Trouble code reader with explanations
  • Real-time gauge monitoring (Voltage, Oil Pressure, Coolant Temp, etc.)
  • Transmission fluid temperature gauge
  • Oil change and repair log book
  • Repair shop finder
  • Technical library with videos
  • Fluids and consumables specifications
Features
Read full description

Welcome to the ProMasters Only App version 2.0. This is a phone or tablet app written specifically for the Ram ProMaster. Covers Promaster 1500, 2500, and 3500 all years. App requires hardware purchase of an OBD dongle ($15-30 on Amazon). Approved dongles and links to them are in the demonstration video: https://youtu.be/XWhNLE6Peno New and Improved for 2.0: * Gauge Alarms * One-touch Login * Wake Lock * Heads Up Display Mode * Gauge explanation videos * Oil Change/Repair log book * Repair Shop Finder * Technical Library of videos covering ALL topics * Fluids and Consumables Specs This app features a trouble code reader, and if any of the common codes for ProMaster come up it provides a link for a detailed explanation of that code, what causes it, and how to fix it. Gauges for Voltage, Oil Pressure, Coolant Temperature, Engine power, and Fuel trims. Plus the ALL IMPORTANT Transmission fluid temperature gauge - monitoring transmission temps may save your transmission! Note: transmission temp gauge does not work on 2022-later vans, but is not as important on those newer transmissions. Note: app not fully implemented for the diesel ProMasters. App is free upgrades for life.

Screenshots

Autmet | OBD2 Scanner3 screens
ProMasters Only1 screens

Verdict

The call

The clearest difference is price: Autmet | OBD2 Scanner at Free against ProMasters Only's $69.99. Autmet | OBD2 Scanner also leads on rating (5.0 vs 4.5) and update cadence (every 9 days vs every 7 months). ProMasters Only's advantage is ratings volume (21 vs 1). On ads, in-app purchases, device support and iOS requirement 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

Autmet | OBD2 Scanner is free to download; ProMasters Only costs $69.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Autmet | OBD2 Scanner holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: ProMasters Only has 21 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Autmet | OBD2 Scanner ships an update every 9 days, ProMasters Only every 7 months. Both last shipped on October 30, 2026.

Scorecard5 real differences · 5 level
Autmet | OBD2 Scanner versus ProMasters Only: the parameters behind the verdict, then further details
ParameterAutmet | OBD2 ScannerProMasters Only
PriceFree — better$69.99
Rating5.0 (1 ratings) — better4.5 (21 ratings)
Positive reviews—78.6% of reviews
Number of ratings121 — better
Update frequencyEvery 9 days — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.6 — better
Further details — not scored
Size50 MB27 MB
Age rating4+17+
DeveloperSPIRESHKip Amore

Customer experience

Autmet | OBD2 Scanner

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

ProMasters Only

All ratings21 ratings
Positive85.7%
Neutral4.8%
Negative9.5%
Written reviews14 reviews
Positive78.6%
Neutral7.1%
Negative14.3%

In-app purchases

None

Autmet | OBD2 Scanner

No in-app purchases

None

ProMasters Only

No in-app purchases

Questions

Is Autmet | OBD2 Scanner free?
Autmet | OBD2 Scanner is free to download, with no in-app purchases.
Is ProMasters Only free?
ProMasters Only costs $69.99, with no in-app purchases.
Which has better reviews, Autmet | OBD2 Scanner or ProMasters Only?
Autmet | OBD2 Scanner is rated higher. Autmet | OBD2 Scanner averages 5.0 out of 5 from 1 ratings, while ProMasters Only averages 4.5 from 21 ratings.
Do Autmet | OBD2 Scanner or ProMasters Only have ads?
Neither Autmet | OBD2 Scanner nor ProMasters Only shows ads.
Which is updated more often, Autmet | OBD2 Scanner or ProMasters Only?
Autmet | OBD2 Scanner ships an update every 9 days, and ProMasters Only every 7 months. Most recently, Autmet | OBD2 Scanner was updated on October 30, 2026 and ProMasters Only on October 30, 2026.

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