Comparison

SDPROG vs OBD2 Expert

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

Head to head
About

SDPROG

This advanced diagnostic tool allows for comprehensive vehicle system analysis, including emission filters and real-time parameter monitoring. It supports cars, motorcycles, ATVs, hybrids, and electric vehicles, offering detailed insights into engine and onboard modules.

Highlights
  • Comprehensive OBD2 and service diagnostics
  • Advanced emission filter analysis (DPF, FAP, GPF, PEF)
  • Real-time vehicle parameter monitoring
  • DTC reading and clearing
  • Support for cars, motorcycles, ATVs, hybrids, and EVs
Features
Read full description

SDPROG is an advanced diagnostic tool that enables the diagnosis of cars, motorcycles, ATV (Quads), hybrid, and electric vehicles. The application supports both OBD2/OBDII and service modes, providing comprehensive control over vehicle systems, including advanced monitoring features for emission systems such as DPF, FAP, GPF, and PEF. Support for Emission Filters: DPF, FAP, GPF, PEF The application offers complete diagnostics and monitoring of various types of particulate filters, including: - DPF (Diesel Particulate Filter) – for diesel-powered vehicles. - FAP (Filtre à Particules) – advanced particulate filters for diesels. - GPF (Gasoline Particulate Filter) – particulate filters for gasoline engines. - PEF (Particle Emission Filter) – filters used in modern emission control systems. Features related to emission filters: - Monitoring emission filter parameters: - Soot and ash levels in filters. - Temperatures before and after the filter. - Differential pressure (DPF/PEF Pressure). - Number of completed and failed regenerations. - Time and mileage since the last regeneration. - Support for regeneration processes: - Detailed data on regeneration efficiency. - Information about PEF status in electric and hybrid vehicles. - Emission system diagnostics through DTC (Diagnostic Trouble Codes) reading: - Analysis of errors related to filter regeneration and operation. - Capability to clear error codes. Motorcycle Support in OBDII and Service Modes: The SDPROG application also supports motorcycles, enabling diagnostics in both OBDII and service modes: - Reading and clearing DTCs: - Diagnosing engines, emission systems, ABS, and other modules. - Real-time parameter monitoring, such as: - Coolant temperature, - Throttle position, - Vehicle speed, - Fuel pressure and battery status. ATV (Quads) Support in OBDII and Service Modes: The SDPROG application also supports motorcycles, enabling diagnostics in both OBDII and service modes: - Reading and clearing DTCs: - Diagnosing engines, emission systems, ABS, and other modules. - Real-time parameter monitoring, such as: - Coolant temperature, - Throttle position, - Vehicle speed, - Fuel pressure and battery status. - Advanced service control for emission systems and energy management.dvanced service control for emission systems and energy management. Key Features of SDPROG: 1. Comprehensive diagnostics for OBD2 and service systems: - Supports cars, motorcycles, hybrids, and electric vehicles. - Reads parameters of engines, emission systems, and onboard modules. 2. Advanced analysis of emission systems: - Full control over DPF, FAP, GPF, and PEF. - Real-time diagnostics and error analysis. 3. Vehicle operation monitoring: - Temperatures, pressures, battery voltage, and other key parameters. Why Choose SDPROG: - Supports all vehicle types and emission systems, including PEF in electric vehicles. - Utilizes OBDII standards, ensuring versatile diagnostics. - Intuitive interface ensures ease of use. Check details of compatible car and motorcycle models here: https://help.sdprog.com/en/compatibilities-2/ The SDPROG license can be purchased from authorized sellers: https://sdprog.com/shop/

About

OBD2 Expert

Diagnose and monitor your vehicle's health by connecting an OBD2 adapter. View sensor data, read and reset trouble codes, and analyze diagnostic information. Developers can use it as a hardware simulator or protocol bridge.

Highlights
  • Vehicle diagnostics and monitoring
  • Read and reset diagnostic trouble codes (DTC)
  • View current sensor data
  • Analyze Mode 6 diagnostics
  • Load vehicle status files for testing
  • Share vehicle status data
  • BLE/WiFi OBD2 ScanTool simulator for developers
  • OBD2 protocol communication bridge
Features
Read full description

OBD2-Expert is the new competent solution for vehicle diagnostics and monitoring. === The Highlights === A) Reveal vehicle problems before visiting the garage. B) Load vehicle status files and try the functionality of the app. C) Share your vehicle status with others and discuss solutions. D) For developers: Use this app as BTLE-OBD2-ScanTool instead of an expensive hardware simulator. E) For learning: Use this app as BTLE/WiFi Bridge and inspect the protocol communication. === The Details === A) Reveal vehicle problems before visiting the garage. Connect an OBD2 WiFi or BLE adapter to your vehicle and select it from the app. View the current sensor data. Load the diagnostic trouble codes (DTC) and inspect the freeze frame data from when the error occured. The component monitoring can tell you about potential problems by showing contiguous and non-contiguous monitors as well as a detailed analysis of mode 6 diagnostics (if supported by your vehicle). If you can fix your vehicle yourself, reset the saved DTC. B) Load vehicle status files and try the functionality of the app. Tired of buying promising apps that don't work? Try this app for free by loading a vehicle status file instead of connecting it to an adapter. C) Share your vehicle status with others and discuss solutions. With this app, you can capture the state of your vehicle including all DTCs and sensor data – either for later diagnostics or to share with other people. D) For developers: Use this app as BLE-OBD2-ScanTool instead of an expensive hardware simulator. Are you developing an OBD2-ScanTool and not having access to dozens of vehicles with their protocols? This app can work as a BLE-OBD2-ScanTool adapter, sparing you the cost of a professional hardware simulator. E) For learning: Use this app as BTLE/WiFi Bridge and inspect the protocol communication. If you want to learn about the OBD2 protocol communication, you can use your BTLE dongle and bridge it via WiFi to another OBD2 app (this requires an iPad Pro where you can run two apps side-by-side or another physical phone or tablet). === Supported Bluetooth hardware === Please note that this App will _not_ work with Bluetooth 2.x or 3.x adapters! This is a hardware limitation which can't be changed. Many very cheap BTLE OBD2 adapters are not Bluetooth 4.0, so please be aware of that. === Closing Note === OBD2-Expert is not a oneshot project. We want to support and continually develop this app. Hold your breath for exciting coming features. Please use the Support-URL to communicate your feedback to us!

Screenshots

SDPROG4 screens
OBD2 Expert4 screens

Verdict

The call

The clearest difference is rating: SDPROG at 5.0 against OBD2 Expert's 4.1. SDPROG also leads on in-app purchases (none vs 4) and update cadence (every 9 days vs every 2 months). OBD2 Expert's advantage is ratings volume (725 vs 2) and iOS requirement (9.3 vs 14.0). On price, ads 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. OBD2 Expert sells 4 one-off in-app purchases. SDPROG asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SDPROG holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: OBD2 Expert has 725 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 25% of SDPROG's written reviews are positive against 8% of OBD2 Expert's.

UpkeepUpdate frequency

SDPROG ships an update every 9 days, OBD2 Expert every 2 months. The most recent releases landed on September 14, 2026 and September 24, 2026 respectively.

Scorecard7 real differences · 3 level
SDPROG versus OBD2 Expert: the parameters behind the verdict, then further details
ParameterSDPROGOBD2 Expert
PriceFreeFree
Rating5.0 (2 ratings) — better4.1 (725 ratings)
Positive reviews25.0% of reviews — better8.0% of reviews
Number of ratings2725 — better
Update frequencyEvery 9 days — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.09.3 — better
Further details — not scored
Size85 MB17 MB
Age rating4+4+
DeveloperNexDiag Sp z o. o.Michael Lauer

Customer experience

SDPROG

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

OBD2 Expert

All ratings724 ratings
Positive75.1%
Neutral5.0%
Negative19.9%
Written reviews199 reviews
Positive8.0%
Neutral1.5%
Negative90.5%

Bugs and requests

SDPROG

Not enough reviews yet to summarise bugs or requests.

OBD2 Expert

Reported bugs

3 issues
  • Freezes during use
  • Fails to recognize compatible OBD2 adapters
  • Inaccurate vehicle information detection

Requested features

4 requests
  • Add support for more vehicle models
  • Implement live data monitoring
  • Include ability to clear diagnostic codes
  • Provide free trial period to test functionality

In-app purchases

None

SDPROG

No in-app purchases

4 purchases

OBD2 Expert

One-time4
  • Operation Mode Bridge$0.99
  • Operation Mode ScanTool$2.99
  • Operation Mode Simulator$4.99
Show 1 more
  • All Features$5.99

Questions

Is SDPROG free?
SDPROG is free to download, with no in-app purchases.
Is OBD2 Expert free?
OBD2 Expert is free to download, with in-app purchases available.
Which has better reviews, SDPROG or OBD2 Expert?
SDPROG is rated higher. SDPROG averages 5.0 out of 5 from 2 ratings, while OBD2 Expert averages 4.1 from 725 ratings.
Do SDPROG or OBD2 Expert have ads?
Neither SDPROG nor OBD2 Expert shows ads.
Which is updated more often, SDPROG or OBD2 Expert?
SDPROG ships an update every 9 days, and OBD2 Expert every 2 months. Most recently, SDPROG was updated on September 14, 2026 and OBD2 Expert on September 24, 2026.

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