# OBD Pro vs Mini OBDII

The clearest difference is rating: Mini OBDII at 3.4 against OBD Pro's 2.0. Mini OBDII also leads on review sentiment (38% vs 0%) and ratings volume (5 vs 1). OBD Pro's advantage is iOS requirement (7.0 vs 11). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Mini OBDII holds the better App Store score, 3.4 against 2.0. That said, the two scores are not equally well evidenced: Mini OBDII has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of OBD Pro's written reviews are positive against 38% of Mini OBDII's.

OBD Pro ships an update monthly, Mini OBDII every 3 weeks. The most recent releases landed on September 27, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | OBD Pro | Mini OBDII |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/obd-pro/id1063199690/reviews) | **[3.4 (5 ratings)](https://appshunter.io/ios/app/mini-obdii/id1530755839/reviews)** |
| Number of ratings | 1 | **5** |
| Positive reviews | 0.0% of reviews | **37.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 10 MB | 33 MB |
| Requires iOS | **7.0** | 11 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [Shenzhen Chaoyue Technology Development Co.,Ltd](https://appshunter.io/developer/1223781320) |

## What reviewers say

### OBD Pro

[App page](https://appshunter.io/ios/app/obd-pro/id1063199690)

This application helps users diagnose vehicle issues by monitoring various car systems and components. It provides insights into engine performance, emissions, and other critical parts to help owners understand and address potential problems.

**Highlights:** Vehicle condition monitoring, Car diagnostics, Engine system analysis, Catalytic converter monitoring, Oxygen sensor readings, Emission control system checks, Fuel system analysis

**In-app purchases:** none


### Mini OBDII

[App page](https://appshunter.io/ios/app/mini-obdii/id1530755839)

This app connects to your vehicle via Bluetooth or WiFi to perform diagnostics and monitor driving. It reads and clears fault codes, analyzes performance, and tracks your travel data. Supports multiple languages and high-speed data transmission.

**Highlights:** Fault code reading and clearing, Instrument panel monitoring, Performance testing, Travel analysis, High-speed data transmission, Multi-language support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OBD Pro free?

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

### Is Mini OBDII free?

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

### Which has better reviews, OBD Pro or Mini OBDII?

Mini OBDII is rated higher. OBD Pro averages 2.0 out of 5 from 1 ratings, while Mini OBDII averages 3.4 from 5 ratings.

### Do OBD Pro or Mini OBDII have ads?

Neither OBD Pro nor Mini OBDII shows ads.

### Which is updated more often, OBD Pro or Mini OBDII?

OBD Pro ships an update monthly, and Mini OBDII every 3 weeks. Most recently, OBD Pro was updated on September 27, 2026 and Mini OBDII on October 6, 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.*