# OBDII Trouble Codes Lite vs ThinkCar Bay

The clearest difference is rating: ThinkCar Bay at 3.3 against OBDII Trouble Codes Lite's 2.1. ThinkCar Bay also leads on in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume and device support there is nothing between them.

Both are free to download. OBDII Trouble Codes Lite sells 1 one-off in-app purchase. ThinkCar Bay asks for nothing beyond the download.

ThinkCar Bay holds the better App Store score, 3.3 against 2.1. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews point the same way: 31% of OBDII Trouble Codes Lite's written reviews are positive against 50% of ThinkCar Bay's.

OBDII Trouble Codes Lite ships an update every 25 months, ThinkCar Bay every 5 months. The most recent releases landed on August 24, 2026 and July 19, 2026 respectively.

## The numbers

| Metric | OBDII Trouble Codes Lite | ThinkCar Bay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (7 ratings)](https://appshunter.io/ios/app/obdii-trouble-codes-lite/id688952518/reviews) | **[3.3 (3 ratings)](https://appshunter.io/ios/app/thinkcar-bay/id6444782891/reviews)** |
| Number of ratings | **7** | 3 |
| Positive reviews | 31.3% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 25 months | **Every 5 months** |
| Monetization | Ad-supported | **Free** |
| Size | 54 MB | 215 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Oleg Chumakov](https://appshunter.io/developer/688892120) | [THINKCAR INC](https://appshunter.io/developer/1464847379) |

## What reviewers say

### OBDII Trouble Codes Lite

[App page](https://appshunter.io/ios/app/obdii-trouble-codes-lite/id688952518)

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:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $2.99 | one-time |


### ThinkCar Bay

[App page](https://appshunter.io/ios/app/thinkcar-bay/id6444782891)

This service application supports THINKCAR automotive diagnostic products. It offers tutorials, case studies, after-sales service, and online viewing of diagnostic reports. Manage your products and get assistance with their use.

**Highlights:** Product tutorials, Case studies, After-sales service, User product management, Online diagnostic report viewing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OBDII Trouble Codes Lite free?

OBDII Trouble Codes Lite is free to download, with in-app purchases available.

### Is ThinkCar Bay free?

ThinkCar Bay is free to download, with no in-app purchases.

### Which has better reviews, OBDII Trouble Codes Lite or ThinkCar Bay?

ThinkCar Bay is rated higher. OBDII Trouble Codes Lite averages 2.1 out of 5 from 7 ratings, while ThinkCar Bay averages 3.3 from 3 ratings.

### Do OBDII Trouble Codes Lite or ThinkCar Bay have ads?

OBDII Trouble Codes Lite shows ads; ThinkCar Bay does not.

### Which is updated more often, OBDII Trouble Codes Lite or ThinkCar Bay?

OBDII Trouble Codes Lite ships an update every 25 months, and ThinkCar Bay every 5 months. Most recently, OBDII Trouble Codes Lite was updated on August 24, 2026 and ThinkCar Bay on July 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*