Comparison

OBDII Trouble Codes vs i

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

Head to head
About

OBDII Trouble Codes

Access a comprehensive offline database of over 18,500 diagnostic trouble codes for cars. Simply enter a fault code to get detailed descriptions without needing an internet connection or car model selection.

Highlights
  • Offline OBD2/EOBD code database
  • Over 18,500 error descriptions
  • No internet connection required
  • Simple fault code entry
  • Supports generic and manufacturer-specific codes
  • Copy and paste error descriptions
Features
Read full description

This app is the most complete offline OBD2 (EOBD) diagnostic trouble code definitions database. It contains more than 18500 error descriptions. It is the most full database in market. 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 usb, 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 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

i

Features
Read full description

I-VENU APP can realize the whole process of tire pressure sensor activation/programming control through the direct connection of original part number scanning code or second filtering of car models; automatically generate diagnostic tire pressure report and store it in the cloud, which can provide intelligent escort for your tires' safety from accurate installation to scientific maintenance. ***Contact Us W: www.mythinkcar.com E: service@mythinkcar.com P: +1 833-692-2766 2151 S Haven Ave Unit 203 Ontario CA 91761 USA

Screenshots

OBDII Trouble Codes3 screens
i4 screens

Verdict

The call

The clearest difference is price: i at Free against OBDII Trouble Codes's $3.99. i also leads on update cadence (every 4 months vs every 25 months). OBDII Trouble Codes's advantage is iOS requirement (13.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

i is free to download; OBDII Trouble Codes costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

OBDII Trouble Codes ships an update every 25 months, i every 4 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard3 real differences ยท 5 level
OBDII Trouble Codes versus i: the parameters behind the verdict, then further details
ParameterOBDII Trouble Codesi
Price$3.99Free โ€” better
Positive reviews21.4% of reviewsโ€”
Update frequencyEvery 25 monthsEvery 4 months โ€” better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidโ€”
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPod
Requires iOS13.0 โ€” better15.6
Further details โ€” not scored
Size54 MB86 MB
Age rating4+4+
DeveloperOleg ChumakovTHINKCAR INC

In-app purchases

None

OBDII Trouble Codes

No in-app purchases

None

i

No in-app purchases

Questions

Is OBDII Trouble Codes free?
OBDII Trouble Codes costs $3.99, with no in-app purchases.
Is i free?
i is free to download, with no in-app purchases.
Do OBDII Trouble Codes or i have ads?
Neither OBDII Trouble Codes nor i shows ads.
Which is updated more often, OBDII Trouble Codes or i?
OBDII Trouble Codes ships an update every 25 months, and i every 4 months. Most recently, OBDII Trouble Codes was updated on October 26, 2026 and i on October 24, 2026.

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