Comparison

OBD Diagnostics vs I'm Hero OBD2 Scanner

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

Head to head
About

OBD Diagnostics

Features
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OBD Diagnostics turns your iPhone into a powerful real-time vehicle data scanner, dashboard, session recorder, and AI analysis tool. Connect to supported Bluetooth OBD-II adapters, including Veepeak and compatible ELM327-style adapters, to read live vehicle data directly from your car. View key engine metrics, track driving sessions, graph sensor data, and send your recorded measurements to AI for personalized analysis based on your vehicle’s make, model, year, and engine. Whether you are troubleshooting a check engine light, monitoring engine performance, reviewing fuel trims, checking battery voltage, or learning how your vehicle behaves over time, OBD Diagnostics helps make your car’s data easier to understand. **Real-Time OBD-II Dashboard** Monitor live data from your vehicle with a clean, easy-to-read dashboard. View supported OBD-II PIDs such as: Engine RPM Vehicle speed Coolant temperature Battery voltage Engine load Short-term fuel trim Long-term fuel trim Oxygen sensor readings Fuel level Additional supported sensor values Large gauges, live value cards, and quick-access charts help you focus on the vehicle data that matters most. CarPlay support with live data. Shortcut actions to automatically connect and start as well as disconnect and stop analysis. **Interactive Graphs** Visualize your vehicle’s live data with real-time graphs. Select up to 10 dashboard PIDs and track changing values over the last 60 seconds. Great for reviewing RPM changes, coolant temperature rise, fuel trim movement, voltage behavior, speed changes, oxygen sensor activity, and engine load patterns. **Session Recording and History** Record OBD-II sessions and review them later. Each session can include duration, sample count, vehicle information, VIN when available, make, model, year, engine, battery voltage, and min/max/average stats for recorded metrics. Use session history to compare drives, spot changing patterns, and better understand intermittent vehicle issues. **AI Vehicle Analysis** Send recorded session logs to AI for a plain-language review of your vehicle data. OBD Diagnostics can analyze readings using your vehicle’s make, model, year, and engine to help explain performance trends and possible areas to watch. AI analysis can help summarize coolant temperature, RPM, speed, battery voltage, oxygen sensor readings, engine load, fuel trims, and other supported metrics. Choose from multiple AI provider options, including Apple on-device AI where available, OpenAI, Gemini, Claude, xAI, or a custom URL. AI Analysis should NOT be considered a replacement to a professional automotive expert. Please use the data as a means to provide a rudimentory analysis of your vehicle. **Demo Mode** Explore the app without an adapter using Demo Mode. Simulate vehicle data, view dashboards, test graphs, record sessions, and preview AI analysis workflows before connecting to a real car. **Built for Drivers and DIY Mechanics** OBD Diagnostics is useful for car owners, DIY mechanics, used car shoppers, fleet users, and anyone who wants better visibility into vehicle health and performance. **Key Features** Real-time OBD-II Bluetooth data Veepeak and ELM327-style adapter support Live RPM and speed gauges Custom dashboard PID selection Interactive vehicle graphs Session recording and history Vehicle info and VIN capture when available Min, max, and average metric summaries AI-powered session analysis On-device AI option where supported Custom AI provider support Demo Mode for offline testing Clean dark-mode iPhone interface OBD Diagnostics combines live OBD-II data, Bluetooth scanner support, real-time charts, session tracking, and AI-powered vehicle analysis into one simple app for understanding your car’s performance and health.

About

I'm Hero OBD2 Scanner

Features
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Turn your car's cryptic check-engine light into something you can actually act on. I'm Hero OBD2 Scanner connects to a standard ELM327 OBD-II adapter over Bluetooth LE or Wi-Fi and shows what your car is doing β€” in plain language. β€’ Live data β€” RPM, speed, coolant, fuel trims, O2, intake and more on clean gauges, showing only the parameters your car supports. β€’ Trouble codes β€” read and clear stored, pending and permanent codes, each with a description and a freeze-frame snapshot from the moment it set. β€’ Explain with AI β€” tap a code for a plain-English explanation of what it means, common causes, how serious it is, and typical next steps. β€’ Emissions readiness β€” check the MIL status and which monitors are ready before an inspection or buying a used car. β€’ VIN & vehicle info, battery voltage, and drive-session logging with charts and CSV export. No account. Your vehicle data stays on your device. Works with common ELM327 adapters (Veepeak, Vgate and similar). No adapter yet? Try the built-in Demo mode. A trouble code points to a symptom, not a guaranteed part β€” always have a professional confirm before repairs.

Screenshots

OBD Diagnostics4 screens
I'm Hero OBD2 Scanner3 screens

Verdict

The call

The clearest difference is in-app purchases: I'm Hero OBD2 Scanner at none against OBD Diagnostics's 1. I'm Hero OBD2 Scanner also leads on ads (none vs shown) and iOS requirement (17.0 vs 26.2). On price 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. OBD Diagnostics sells 1 one-off in-app purchase. I'm Hero OBD2 Scanner asks for nothing beyond the download.

Scorecard3 real differences Β· 3 level
OBD Diagnostics versus I'm Hero OBD2 Scanner: the parameters behind the verdict, then further details
ParameterOBD DiagnosticsI'm Hero OBD2 Scanner
PriceFreeFree
Update frequencyMonthlyβ€”
AdsYesNo β€” better
In-app purchasesYesNo β€” better
DevicesiPhone, iPad β€” betteriPhone
Requires iOS26.217.0 β€” better
Further details β€” not scored
Size23 MB2 MB
Age rating4+4+
DeveloperEJSmithRuslan Korennoy

In-app purchases

1 purchases

OBD Diagnostics

One-time1
  • Remove Ads$1.99
None

I'm Hero OBD2 Scanner

No in-app purchases

Questions

Is OBD Diagnostics free?
OBD Diagnostics is free to download, with in-app purchases available.
Is I'm Hero OBD2 Scanner free?
I'm Hero OBD2 Scanner is free to download, with no in-app purchases.
Do OBD Diagnostics or I'm Hero OBD2 Scanner have ads?
OBD Diagnostics shows ads; I'm Hero OBD2 Scanner does not.

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