OpenOBD vs Vondr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpenOBD
Transform your iPhone into a real-time car dashboard. Connect an OBD2 adapter to monitor live engine data, track your trips with GPS, and diagnose fault codes with clear explanations. Explore all features in demo mode without hardware.
- Live engine data monitoring
- Real-time speed, RPM, temperature gauges
- Trip logging with GPS mapping
- Read and clear diagnostic trouble codes (DTCs)
- Vehicle information display
- Demo mode for exploration
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OpenOBD turns your iPhone into a real-time car dashboard. Connect any ELM327 OBD2 adapter (Bluetooth or Wi-Fi) and see what your car is really doing — live. LIVE ENGINE DATA • Speed, RPM, coolant temperature, intake, throttle, engine load, battery voltage and more • 50+ sensors with gauges you pick and reorder yourself • Instant and average fuel consumption • Tap any gauge for a live 60-second chart CARPLAY • A live 8-tile dashboard on your car's built-in screen • Start and stop trip recording without touching your phone DIAGNOSTICS • Read and clear fault codes (DTCs) with plain-language explanations • For common codes: what it means, how urgent it is, what to do next • Emissions readiness monitors before an inspection • Freeze frame — the sensor values from the moment the fault occurred • Vehicle info: VIN, fuel type, supported sensors TRIP LOGGING • Automatically record your drives with the GPS route on a map • Keeps recording in the background, even with the screen locked • Distance, duration, speed and fuel for every trip • Export any trip as CSV or GPX CAR HEALTH TOOLS • Battery and charging test: state of charge, alternator and cranking check • Diesel and DPF pre-check from standard, read-only OBD evidence • Used car check before you buy • Measure 0-100 km/h acceleration and 100-0 km/h braking • Live alerts for overheating and low voltage, in plain language BUILT FOR DRIVERS • Beautiful dark interface designed for the car • Over 40 languages, metric and imperial units • Works with affordable ELM327 adapters — no subscription, no account, no ads • Your data stays on your phone TRY IT WITHOUT HARDWARE • Tap Connect, then Demo Mode, to explore every feature with simulated live data OpenOBD is not affiliated with any car manufacturer. An OBD2 adapter (sold separately) is required to read data from your vehicle. Most petrol cars built after 2001 and diesels after 2004 are supported. The battery, diesel and used-car results are read-only pre-checks and do not replace a professional inspection.
Vondr
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Vondr turns your iPhone into a beautiful set of turbo gauges. Plug a Bluetooth or Wi-Fi OBD-II adapter into your car, tap once, and watch live boost sweep across an instrument-cluster display built for sunlight, night drives and quick glances. No protocol menus. No PID spreadsheets. No setup. Vondr finds your adapter, talks to your ECU and starts reading in seconds. GAUGES THAT FEEL FACTORY-FIT • Hero boost gauge with a smooth 60fps needle • Coolant, oil temperature, intake air temperature, RPM and more • Amber and red zones so a warning registers at a glance • Values your car doesn't support grey out honestly — no fake zeros BUILT FOR THE DRIVE • Peak hold to capture your best numbers • Session logging — review your boost traces after the drive • 0–60 and G-force timers using your phone's sensors • Your units, your way: bar or psi, °C or °F WORKS WITH • Bluetooth LE and Wi-Fi ELM327 OBD-II adapters (vGate iCar Pro, Veepeak and most clones) • Petrol turbo cars with standard OBD-II — with hero support for the Ford Focus ST Vondr Pro is a monthly subscription with a 7-day free trial. Payment is charged to your Apple ID account at confirmation of purchase, and the subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel any time in your App Store account settings. Terms of Use (EULA): https://www.web-ly.co.uk/vondr/terms Privacy Policy: https://www.web-ly.co.uk/vondr/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Vondr at none against OpenOBD's 1. On price, ads, 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
Both are free to download. OpenOBD sells 1 one-off in-app purchase. Vondr asks for nothing beyond the download.
| Parameter | OpenOBD | Vondr |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 | 16.4 |
| Further details — not scored | ||
| Size | 80 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Osman Cengeri | James Thomas |
In-app purchases
OpenOBD
- Founder Pack$4.99
Vondr
No in-app purchases









