# AutoOBDII vs UJS OBDII

The clearest difference is update cadence: UJS OBDII at every 6 weeks against AutoOBDII's every 4 months. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for AutoOBDII against 5.0 for UJS OBDII. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

AutoOBDII ships an update every 4 months, UJS OBDII every 6 weeks. The most recent releases landed on July 20, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | AutoOBDII | UJS OBDII |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/autoobdii/id6503489503/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/ujs-obdii/id6753165961/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 83 MB | 81 MB |
| Requires iOS | 13 | 13 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Lonauto Technology Co., Ltd.](https://appshunter.io/developer/1744849406) | [UJS INC](https://appshunter.io/developer/1842801577) |

## What reviewers say

### AutoOBDII

[App page](https://appshunter.io/ios/app/autoobdii/id6503489503)

This application connects to your vehicle via Bluetooth to perform diagnostics and offer driving assistance. It can read and clear fault codes, analyze performance, and track your journeys. Supports multiple languages and high-speed data transmission.

**Highlights:** Bluetooth vehicle communication, Fault code reading and clearing, Instrument panel monitoring, Performance testing, Travel analysis, High-speed data transmission, Low power consumption

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### UJS OBDII

[App page](https://appshunter.io/ios/app/ujs-obdii/id6753165961)

This professional car diagnostic app connects to UJS OBDII devices via Bluetooth to read and clear fault codes, monitor real-time vehicle performance, and analyze travel data. It supports multiple languages and offers high-speed, low-power data transmission.

**Highlights:** Fault code reading and clearing, Real-time instrument panel display, Vehicle performance testing, Detailed travel analysis, Multi-language support, High-speed data transmission, Low-power consumption

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AutoOBDII free?

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

### Is UJS OBDII free?

UJS OBDII is free to download, with no in-app purchases.

### Which has better reviews, AutoOBDII or UJS OBDII?

AutoOBDII and UJS OBDII are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do AutoOBDII or UJS OBDII have ads?

Neither AutoOBDII nor UJS OBDII shows ads.

### Which is updated more often, AutoOBDII or UJS OBDII?

AutoOBDII ships an update every 4 months, and UJS OBDII every 6 weeks. Most recently, AutoOBDII was updated on July 20, 2026 and UJS OBDII on June 1, 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.*