Comparison

OBDII Trouble Codes Lite vs Plier

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

Head to head
About

OBDII Trouble Codes Lite

Access a comprehensive database of OBD II diagnostic trouble codes. Quickly look up definitions for generic and manufacturer-specific codes without an internet connection. Easily copy and share code descriptions.

Highlights
  • Extensive OBD II code definitions
  • Offline access
  • No car model selection needed
  • Copy and share descriptions
  • Supports generic and manufacturer codes
Features
Read full description

This app is the most complete OBD II (EOBD) diagnostic trouble code definitions database. This is an ad-supported Lite version, which contains only 2553 description of generic codes (P0...). If extended code is accessible in full version, you will get message "This description is available in FULL version" If you want to get all descriptions you can buy FULL version, which contains more than 18500 error descriptions for almost 50 car manufacturers. Very simple to use! You don't even have to select your car model. Just enter your fault code and app will show you all supported descriptions. No Internet connection needed, no longer spend hours to search for single code description, looking at check engine light. If you have cable, bluetooth or WiFi OBDII code reader (ELM327, PLX Kiwi or any other) you need this app for code description because most of code scanners does not contain full DTC (diagnostic trouble code) database and displays only meaningfull numbers. Be prepared for any troubles wherever you are! You can select and copy error description with simple long press on text, and then paste it in SMS, e-mail or wherever you want! If your car supports OBD II or EOBD, then you can already use almost 5000 generic OBDII codes. These codes are from PowerTrain series (P0XXX, P2XXX, P34XX), Body Series (B0XXX), Chassis series (C0XXX), Network series (U0XXX, U2XXX, U3XXX). Also there is a list of more than 13500 additional manufacturer specific codes. Supported manufacturers with specific codes: Acura Alfa Romeo BMW Chrysler / Dodge / Jeep Citroen / Peugeot Daewoo Fiat Ford Geo GM (Buick, Cadillac, Chevrolet, GMC, Hummer, Pontiac) Honda Hyundai Infinity Isuzu Jaguar Kia Lamborghini Land Rover Lexus Lincoln Mazda Mercedes Mercury Mini Mitsubishi Nissan Oldsmobile Opel / Vauxhall Plymouth Porsche Renault (DF codes) Saab Saturn Scion Subaru Suzuki Toyota Volskwagen Audi Group Volvo Note, that it is impossible to create complete OBD DTC database. Manufacturers are adding new codes and changing old ones. So if you cannot find your code or if you think that some code not correct anymore, please write us!

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

OBDII Trouble Codes Lite3 screens
Plier4 screens

Verdict

The call

The clearest difference is review sentiment: Plier at 100% against OBDII Trouble Codes Lite's 31%. Plier also leads on rating (4.6 vs 2.1) and ads (none vs shown). OBDII Trouble Codes Lite's advantage is monetization model (ad-supported vs free with in-app purchases). On price, ratings volume, 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. OBDII Trouble Codes Lite sells 1 one-off in-app purchase and Plier sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Plier holds the better App Store score, 4.6 against 2.1. Both are backed by a comparable volume of ratings — 7 and 15 respectively. Written reviews point the same way: 31% of OBDII Trouble Codes Lite's written reviews are positive against 100% of Plier's.

UpkeepUpdate frequency

OBDII Trouble Codes Lite ships an update every 25 months, Plier weekly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

Scorecard5 real differences · 5 level
OBDII Trouble Codes Lite versus Plier: the parameters behind the verdict, then further details
ParameterOBDII Trouble Codes LitePlier
PriceFreeFree
Rating2.1 (7 ratings)4.6 (15 ratings) — better
Positive reviews31.3% of reviews100.0% of reviews — better
Number of ratings715 — better
Update frequencyEvery 25 monthsWeekly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size54 MB54 MB
Age rating4+4+
DeveloperOleg ChumakovHeap Labs LLC

Customer experience

OBDII Trouble Codes Lite

All ratings7 ratings
Positive28.6%
Neutral0.0%
Negative71.4%
Written reviews32 reviews
Positive31.3%
Neutral6.3%
Negative62.5%

Plier

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

In-app purchases

1 purchases

OBDII Trouble Codes Lite

One-time1
  • Full version$2.99
2 purchases

Plier

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

Questions

Is OBDII Trouble Codes Lite free?
OBDII Trouble Codes Lite is free to download, with in-app purchases available.
Is Plier free?
Plier is free to download, with in-app purchases available.
Which has better reviews, OBDII Trouble Codes Lite or Plier?
Plier is rated higher. OBDII Trouble Codes Lite averages 2.1 out of 5 from 7 ratings, while Plier averages 4.6 from 15 ratings.
Do OBDII Trouble Codes Lite or Plier have ads?
OBDII Trouble Codes Lite shows ads; Plier does not.
Which is updated more often, OBDII Trouble Codes Lite or Plier?
OBDII Trouble Codes Lite ships an update every 25 months, and Plier weekly. Most recently, OBDII Trouble Codes Lite was updated on November 1, 2026 and Plier on November 4, 2026.

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