Comparison

SDPROG vs Plier

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

Plier

Transform your iPhone into an AI-powered car diagnostic tool. Connect to your vehicle via an OBD2 device to understand its health, diagnose issues, and estimate repair costs.

Highlights
  • AI-driven diagnostic reports
  • Real-time OBD2 data and graphs
  • Check engine light insights
  • Repair cost estimation
  • ELM327 Bluetooth compatibility
  • Troubleshoot engine codes
Read full description

Turn your iPhone into a clear, capable OBD2 car scanner with Plier.AI. Connect a compatible Bluetooth ELM327 adapter to read diagnostic trouble codes, view live sensor data and graphs, and understand check-engine warnings. The new Vehicle Health Center brings together a health snapshot, mileage-based maintenance planning, official NHTSA recall checks for saved vehicles, inspection-readiness guidance, and a report you can share with a mechanic. Ask the AI Mechanic vehicle-aware questions about symptoms and active codes. Plier suggests practical tests, explains possible causes, and helps you decide what to check before replacing parts. You can also review supported freeze-frame and oxygen-sensor test data. Available data varies by vehicle, adapter, protocol, and model year. AI guidance and health scores can be wrong and are not proof that a vehicle is safe. Confirm safety-critical findings with a qualified technician. Some features require Plier Pro. Terms of Use: https://plier.ai/tos

Screenshots

SDPROG4 screens
Plier4 screens

Verdict

The call

The clearest difference is review sentiment: Plier at 100% against SDPROG's 25%. Plier also leads on ratings volume (15 vs 3). SDPROG's advantage is in-app purchases (none vs 2) and rating (5.0 vs 4.6). On price, update cadence, 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. Plier sells 2 in-app purchases, starting at $6.99 per 7 days. SDPROG asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SDPROG holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Plier has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 25% of SDPROG's written reviews are positive against 100% of Plier's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

SDPROG ships an update every 9 days, Plier weekly. Both last shipped on October 24, 2026.

Scorecard5 real differences · 5 level
SDPROG versus Plier: the parameters behind the verdict, then further details
ParameterSDPROGPlier
PriceFreeFree
Rating5.0 (3 ratings) — better4.6 (15 ratings)
Positive reviews25.0% of reviews100.0% of reviews — better
Number of ratings315 — better
Update frequencyEvery 9 daysWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size85 MB54 MB
Age rating4+4+
DeveloperNexDiag Sp z o. o.Heap Labs LLC

Customer experience

SDPROG

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

Plier

All ratings15 ratings
Positive93.3%
Neutral6.7%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SDPROG

No in-app purchases

2 purchases

Plier

Subscriptions2
  • Pro (Weekly)3 Days trial$6.997 Days
  • Pro ( 1 Year )$49.991 Year

Questions

Is SDPROG free?
SDPROG is free to download, with no in-app purchases.
Is Plier free?
Plier is free to download, with in-app purchases available.
Which has better reviews, SDPROG or Plier?
SDPROG is rated higher. SDPROG averages 5.0 out of 5 from 3 ratings, while Plier averages 4.6 from 15 ratings.
Do SDPROG or Plier have ads?
Neither SDPROG nor Plier shows ads.
Which is updated more often, SDPROG or Plier?
SDPROG ships an update every 9 days, and Plier weekly. Most recently, SDPROG was updated on October 24, 2026 and Plier on October 24, 2026.

Other comparisons