# Gretio vs Rig Mechanic

The clearest difference is in-app purchases: Rig Mechanic at none against Gretio's 4. Rig Mechanic also leads on iOS requirement (16.6 vs 18.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Gretio sells 4 in-app purchases, starting at $19.99 per year. Rig Mechanic asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.9 for Gretio against 3.8 for Rig Mechanic. Both are backed by a comparable volume of ratings — 22 and 20 respectively. Written reviews are what separate them: 72% of Gretio's written reviews are positive against 67% of Rig Mechanic's.

Gretio ships an update every 3 weeks, Rig Mechanic monthly. The most recent releases landed on August 15, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Gretio | Rig Mechanic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (22 ratings)](https://appshunter.io/ios/app/gretio/id1498320180/reviews)** | [3.8 (20 ratings)](https://appshunter.io/ios/app/rig-mechanic/id1605635549/reviews) |
| Number of ratings | **22** | 20 |
| Positive reviews | **72.2% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 40 MB | 122 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Surreal Development LLC](https://appshunter.io/developer/1498320179) | [Rig Technologies, Inc](https://appshunter.io/developer/1605615841) |

## What reviewers say

### Gretio

[App page](https://appshunter.io/ios/app/gretio/id1498320180)

This app enables advanced vehicle diagnostics and service functions for General Motors vehicles using an OBDLINK MX+ device. It analyzes data points, looks up trouble codes, and performs service procedures like DPF regenerations.

**Highlights:** Advanced diagnostic functions, Analyze thousands of data points, Look up diagnostic trouble codes, Perform advanced service functions, Exclusive for General Motors vehicles

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gretio All Access | $19.99 | per year |
| Gretio RPO Pack 1 | $29.99 | one-time |
| Gretio RPO Pack 2 | $29.99 | one-time |
| RPO Pack 3 | $29.99 | one-time |


### Rig Mechanic

[App page](https://appshunter.io/ios/app/rig-mechanic/id1605635549)

This app connects drivers and mechanics for maintenance and repair services. It allows mechanics to respond to service requests, track progress, and handle transactions securely within the application.

**Highlights:** Respond to service requests, Send offers for repairs, Real-time service tracking, In-app payment processing, Secure transaction guarantee, Digital invoicing

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

**In-app purchases:** none


## Frequently asked questions

### Is Gretio free?

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

### Is Rig Mechanic free?

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

### Which has better reviews, Gretio or Rig Mechanic?

Gretio is rated higher. Gretio averages 3.9 out of 5 from 22 ratings, while Rig Mechanic averages 3.8 from 20 ratings.

### Do Gretio or Rig Mechanic have ads?

Neither Gretio nor Rig Mechanic shows ads.

### Which is updated more often, Gretio or Rig Mechanic?

Gretio ships an update every 3 weeks, and Rig Mechanic monthly. Most recently, Gretio was updated on August 15, 2026 and Rig Mechanic on September 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*