# GLTSO vs OBD Compass

The clearest difference is iOS requirement: OBD Compass at 13.0 against GLTSO's 15.1. 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.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | GLTSO | OBD Compass |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Size | 37 MB | 25 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [emmanuel manent](https://appshunter.io/developer/1807113923) | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) |

## What reviewers say

### GLTSO

[App page](https://appshunter.io/ios/app/gltso/id6748814951)

**Features:** macOS Compatibility

**In-app purchases:** none


### OBD Compass

[App page](https://appshunter.io/ios/app/obd-compass/id6758076036)

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

**In-app purchases:** none


## Frequently asked questions

### Is GLTSO free?

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

### Is OBD Compass free?

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

### Do GLTSO or OBD Compass have ads?

Neither GLTSO nor OBD Compass shows ads.

### Which is updated more often, GLTSO or OBD Compass?

GLTSO ships an update monthly, and OBD Compass monthly. Most recently, GLTSO was updated on October 2, 2026 and OBD Compass on October 14, 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.*