Samsung Galaxy / GALAXY Specials > Other / MOTORDATA OBD CAR DIAGNOSTICS. ELM OBD2 SCANNER
REVIEW
MotorData OBD turns a cheap ELM327 dongle into a credible diagnostic bench.
A capable OBD-II scanner app on the Galaxy Store that goes deeper than the freemium pack-in but stops short of dealer-tool territory. The Samsung-specific variant works the same as the Play Store original.
BY THE APP COMRADE DESK · MAY 10, 2026 · 5 MIN READ
MotorData OBD Car Diagnostics. ELM OBD2 scanner
JSC LEGION-AUTODATA
OUR SCORE
7.2
SAMSUNG GALAXY
★ 5.0
PRICE
Free
In-app purchases
There is a small economy of apps that turn a twelve-dollar Bluetooth dongle into something resembling a workshop diagnostic tool, and MotorData OBD has spent years positioning itself as the serious one in that bench. Not the friendliest — Torque still wins that round — and not the prettiest, but the one that reads the brand-specific subsystems a generic OBD-II app politely ignores. The Galaxy Store listing is the same engine wearing a Samsung badge.
The ELM327 ecosystem is a deceptively forgiving entry point to car diagnostics. Plug the adapter into the OBD-II port, pair it over Bluetooth, and an app like MotorData starts reading from the ECU the way a dealer scan tool would — fault codes, live sensor values, freeze-frame data, readiness monitors. The differentiator is how far past the generic spec the app will go, and MotorData goes further than most: ABS, airbag, transmission, and body modules across a wide list of marques, behind a paid tier that most users will reach for the second time they open the app.
What you don’t get is hand-holding. The interface assumes you know which protocol your car speaks, which adapter you bought, and which subsystem you’re trying to interrogate. For the audience that wants that level of access on a Galaxy phone, that’s a feature. For everyone else, it’s a learning curve worth knowing about before you tap install.
Plug in a twelve-dollar ELM327, and MotorData reads fault codes the parts-counter clerk will actually recognise.
FEATURES
MotorData OBD pairs with any ELM327-compatible adapter — the ten-to-twenty-dollar Bluetooth or WiFi dongles that plug into the OBD-II port under the dashboard — and exposes what the car's ECUs are willing to talk about. Read and clear diagnostic trouble codes, watch live PIDs as graphs or gauges, run readiness monitors before an emissions test, and pull freeze-frame data captured at the moment a fault triggered. Vehicle coverage extends past the generic OBD-II spec into manufacturer-specific subsystems on a long list of European, American, Korean, and Japanese marques.
The interface is dashboard-style: configurable gauge clusters, multi-PID live graphs, and a session recorder that timestamps logs you can export. Manufacturer-specific extensions unlock per-brand systems — ABS, airbag, transmission, body modules — that the generic OBD-II layer doesn't touch. The app handles unit conversion, custom PIDs, and the small handful of ELM327 quirks that come with knock-off adapters.
Pricing is the standard freemium split. The base scan-and-read function is free, with manufacturer-specific coverage and the deeper diagnostic features gated behind in-app purchases. The Galaxy Store listing is functionally identical to the Play Store version — same engine, same JSC Legion-Autodata back end, repackaged for Samsung's storefront.
MISSION ACCOMPLISHED
MotorData reads the codes you actually need to read. P0420, P0171, the EVAP family — they come back with the descriptive text most parts counters and indie mechanics will recognise without a translation step. Live PID graphing is responsive enough on a modern Galaxy phone over Bluetooth that you can chase an intermittent misfire across a test drive without the data falling behind the engine.
The freemium gating is also fair. The free tier reads and clears generic codes — enough to silence a check-engine light after a fix and confirm readiness monitors before a state inspection. You only pay when you need brand-specific access, which is a calibration most weekend mechanics will accept.
ROOM TO IMPROVE
ELM327 adapters lie about what they support, and MotorData inherits the consequences. A five-dollar clone off a marketplace will technically pair, then drop half the live PIDs or refuse a manufacturer-specific session entirely. The app handles this gracefully but cannot rescue the adapter — and the Galaxy Store listing offers no in-app shortcut to a known-good dongle, so first-time buyers learn this lesson the hard way.
The UI is also dense. Coming from Torque's simpler dashboard, MotorData's tab stack of vehicles, profiles, gauges, logs, and brand modules takes a session or two to internalise. There's no guided onboarding for a user who just wants to know why their van is throwing a code on the way to work.
CONCLUSION
Recommended for the owner who has already outgrown Torque Lite and wants the manufacturer-specific layer without committing to a five-hundred-dollar dedicated scan tool. Pair it with a vetted ELM327 — a Vgate iCar Pro or an OBDLink LX, not the cheapest one on Amazon — and the app earns its keep on the first cleared code. Skip it if you've never plugged a dongle into your car before; Car Scanner ELM OBD2 is the gentler on-ramp.