# Gauge King vs OpenOBD

The clearest difference is in-app purchases: OpenOBD at none against Gauge King's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Gauge King sells 1 in-app purchase, starting at $9.99 per year. OpenOBD asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Gauge King | OpenOBD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/openobd-obd2-car-scanner/id6780283561/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | — | Free |
| Size | 8 MB | 54 MB |
| Requires iOS | 17.2 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mark Ross](https://appshunter.io/developer/1885041786) | [Osman Cengeri](https://appshunter.io/developer/1807592099) |

## What reviewers say

### Gauge King

[App page](https://appshunter.io/ios/app/gauge-king/id6777585502)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gauge King Premium | $9.99 | per year |


### OpenOBD

[App page](https://appshunter.io/ios/app/openobd-obd2-car-scanner/id6780283561)

Transform your iPhone into a real-time car dashboard. Connect an OBD2 adapter to monitor live engine data, track your trips with GPS, and diagnose fault codes with clear explanations. Explore all features in demo mode without hardware.

**Highlights:** Live engine data monitoring, Real-time speed, RPM, temperature gauges, Trip logging with GPS mapping, Read and clear diagnostic trouble codes (DTCs), Vehicle information display, Demo mode for exploration

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

**In-app purchases:** none


## Frequently asked questions

### Is Gauge King free?

Gauge King is free to download, with in-app purchases available.

### Is OpenOBD free?

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

### Do Gauge King or OpenOBD have ads?

Neither Gauge King nor OpenOBD shows ads.

### Which is updated more often, Gauge King or OpenOBD?

Gauge King ships an update every 5 days, and OpenOBD every 5 days. Most recently, Gauge King was updated on November 5, 2026 and OpenOBD on October 31, 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.*