# OBDMap GM Service vs OLI

The clearest difference is device support: OLI at 2 against OBDMap GM Service's —. OBDMap GM Service's advantage is iOS requirement (12.0 vs 15.1). On price 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.

## The numbers

| Metric | OBDMap GM Service | OLI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 9 days |
| Monetization | — | Free with in-app purchases |
| Size | 26 MB | 35 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chiptronic Eletronica do Brasil Ltda](https://appshunter.io/developer/1098176482) | [PecLub](https://appshunter.io/developer/1697013566) |

## What reviewers say

### OBDMap GM Service

[App page](https://appshunter.io/ios/app/obdmap-gm-service/id1665213620)

**In-app purchases:** none


### OLI

[App page](https://appshunter.io/ios/app/oli/id6451156427)

This app provides a comprehensive video and text database for preventive maintenance of automatic vehicle transmissions. It guides technicians through fluid changes, filter replacements, and additive applications, ensuring efficiency and confidence in their work.

**Highlights:** Video and text database for maintenance procedures, Fluid change guidance by manufacturer, model, and year, Fluid and additive recommendations, Filter and oil pan indication, Maintenance interval and service time estimates, Step-by-step video tutorials

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OBDMap GM Service free?

OBDMap GM Service is free to download, with no in-app purchases.

### Is OLI free?

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

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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.*