Comparison

OBD CAN vs OBD2 Scanner + Engine Sound

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

Head to head
About

OBD CAN

Features
Read full description

Understand a check engine light and record your car's data with OBD CAN, an OBD2 scanner for trouble codes, live sensors and custom parameters. Requires a compatible OBD2 / ELM327 BLE adapter for iOS. TROUBLE CODES & VEHICLE DIAGNOSTICS • Read and clear standard OBD2 engine and emissions codes for free. • Copy reports and questions to a third-party AI tool of your choice for help interpreting results. VEHICLE-SPECIFIC UDS DIAGNOSTICS Browse vehicle reference configurations and available modules, then scan supported systems such as ABS, airbags and transmission. Read or clear codes where supported. Clearing is confirmed only after an explicit module acknowledgement; no response does not mean no faults. LIVE DATA & CUSTOM DASHBOARDS Monitor supported sensors such as speed, engine RPM and coolant temperature. Customize your dashboard and choose the sensors you want in your live data view, in portrait or landscape. Set up your dashboard and live data selections before connecting to the car. SENSOR DATA LOGGING • Choose your sensors, adjust their read intervals and set a recording duration. Your last settings are saved for next time. • Watch live charts while recording. Stop manually or let the session end at the set time. • Review charts and statistics, revisit saved reports, save a full report image or export CSV data for analysis in a spreadsheet. • Sensors are read in sequence. Selecting more sensors generally increases the time between updates for each one. FUEL CONSUMPTION TRACKING See instant and average fuel consumption, fuel used and distance traveled. Record fuel figures alongside the sensor readings used to calculate them, then export everything in one CSV file. Revisit previous reports or save them as images. Fuel figures come from vehicle-reported fuel flow or a supported estimation method. Availability and results depend on your vehicle's data and the relevant settings. CUSTOM VEHICLE PARAMETERS — LABS Go beyond standard sensors with custom OEM PIDs. Browse by brand and model, import Torque CSV or define requests and formulas. Read once or record continuously with live charts, history and CSV export. Browsing is free; adding, saving, reading and recording parameters require paid membership. Reference compatibility varies by vehicle and module. MORE WAYS TO CHECK YOUR CAR Record acceleration and elapsed time, observe battery voltage during starting, and view supported O2 sensor graphs. Monitor noise with your phone's microphone alongside vehicle data. View VIN, ECU information, emissions readiness and supported Mode 05/06 results. SAVED REPORTS & LANGUAGES Several tests save reports on your device for viewing after sign-in, even without a car connection. Multiple languages and localized CSV column headings are supported. CONNECTION & MEMBERSHIP • A compatible BLE OBD2 adapter is required and sold separately. Classic Bluetooth and Wi-Fi are not supported. • Sensors, modules and tests vary by vehicle, protocol and adapter; not all features work on every vehicle. • Sign-in is required for readings and tests. UDS, custom parameter actions, sensor logging, fuel tracking, custom live data selections and some dashboard and monitoring features need paid membership. • Clearing codes does not repair their cause; readiness results do not guarantee an emissions inspection pass. MEMBERSHIP & SUBSCRIPTIONS Available plans, prices and benefits are shown in the app. If you choose an auto-renewing subscription, payment is charged to your Apple Account at purchase confirmation. It renews unless canceled at least 24 hours before the current period ends, with renewal charged within the final 24 hours. Manage or cancel subscriptions in your Apple Account settings. Restore purchases in the app. Privacy Policy: https://www.obdcan.com/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

OBD2 Scanner + Engine Sound

Monitor your car's engine performance and hear its sound in real-time. Customize your dashboard with various widgets and track your drives with detailed maps and trip data. Offers a demo mode and optional Pro features for an enhanced experience.

Highlights
  • Real-time OBD2 data display
  • Engine sound simulation based on RPM
  • Customizable dashboard with widgets
  • Trip computer and fuel economy tracking
  • Speed and RPM on map view
  • HUD mode for windshield projection
Features
Read full description

See — and hear — your car in real time. Connect an ELM327 Bluetooth (BLE) adapter and the app turns live OBD2 data into a fast, modern dashboard: RPM, speed, coolant, throttle, fuel, and every sensor your vehicle supports, auto-detected. No subscription. Ever. WHAT MAKES IT DIFFERENT • A genuinely modern interface — not the dated look of most OBD apps • A one-of-a-kind engine-sound simulation driven by your real RPM • Speed and RPM drawn on the map, color-coded (satellite view included) • Buy once for Pro — no monthly fees, unlike many scanners BUILD YOUR OWN DASHBOARD Mix and match four widget types — digital tiles, analog needle gauges, live charts, and the trip map — then reorder them into your own instrument screen. A mirrored HUD mode projects your speed onto the windshield at night. FIVE FOCUSED TABS • Dashboard — your own widget layout, plus HUD mode • Data — every live sensor, overlaid or separate charts, CSV export (long or spreadsheet-friendly wide format) • Drive — trip computer with fuel economy, the color-coded track map, a G-force ball, and 0–100 timing • Engine Sound — procedural sound that follows your real RPM (all presets free) • Tools — adapter info and communication log FREE INCLUDES Live data, the dashboard, track map, trip computer, HUD, and engine sound — free, with a small banner ad. PRO (ONE-TIME PURCHASE, OPTIONAL) • Unlimited CSV logging • Save your 0–100 and G-force runs • Remove ads Prefer just no ads? A cheaper ad-removal-only purchase is also available. NO ACCOUNT NEEDED Your vehicle data comes straight from the ELM327 adapter over Bluetooth and is processed on your device — there is no developer server collecting it. The free version shows ads served by Google's ad SDK (buy Ad Removal or Pro and no ads are shown). Try it with no hardware using the built-in demo mode. REQUIRES an ELM327-compatible Bluetooth LE (BLE) OBD2 adapter and a vehicle with an OBD2 port (most cars sold since 2008). SUPPORT Questions or ideas? Contact: support@takasawadynamics.com

Screenshots

OBD CAN4 screens
OBD2 Scanner + Engine Sound4 screens

Verdict

The call

The clearest difference is ads: OBD CAN at none against OBD2 Scanner + Engine Sound's shown. OBD CAN also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases and device support 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

Both are free to download. OBD CAN sells 2 in-app purchases, starting at $1.99 per month and OBD2 Scanner + Engine Sound sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

OBD CAN ships an update every 11 days, OBD2 Scanner + Engine Sound every 9 days. Both last shipped on October 28, 2026.

Scorecard2 real differences · 7 level
OBD CAN versus OBD2 Scanner + Engine Sound: the parameters behind the verdict, then further details
ParameterOBD CANOBD2 Scanner + Engine Sound
PriceFreeFree
Rating—4.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 11 daysEvery 9 days — better
AdsNo — betterYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size67 MB6 MB
Age rating17+4+
Developer明道通途Sena Takasawa

In-app purchases

2 purchases

OBD CAN

Subscriptions2
  • Premium Monthly3 Days trial$1.991 Month
  • Premium Yearly3 Days trial$9.991 Year
2 purchases

OBD2 Scanner + Engine Sound

One-time2
  • Remove Ads$1.99
  • car_ui Pro (One-Time)$4.99

Questions

Is OBD CAN free?
OBD CAN is free to download, with in-app purchases available.
Is OBD2 Scanner + Engine Sound free?
OBD2 Scanner + Engine Sound is free to download, with in-app purchases available.
Do OBD CAN or OBD2 Scanner + Engine Sound have ads?
OBD2 Scanner + Engine Sound shows ads; OBD CAN does not.
Which is updated more often, OBD CAN or OBD2 Scanner + Engine Sound?
OBD CAN ships an update every 11 days, and OBD2 Scanner + Engine Sound every 9 days. Most recently, OBD CAN was updated on October 28, 2026 and OBD2 Scanner + Engine Sound on October 28, 2026.

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