Gretio vs Rig Mechanic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gretio
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.
- Advanced diagnostic functions
- Analyze thousands of data points
- Look up diagnostic trouble codes
- Perform advanced service functions
- Exclusive for General Motors vehicles
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Use Gretio with an OBDLINK MX+ to perform advanced diagnostic functions on your diesel, gas, electric, or hybrid vehicle. Analyze thousands of different data points at high speeds. Look up diagnostic trouble codes for all modules including the Engine Control Module, Chassis Control Module, Drive Motor Control Modules, Battery Energy Control modules, Body Control Module, Radio, and many more. Perform advanced service functions such as diesel particulate filter service regenerations, selective catalytic reduction tests, power relay tests, and even program some features. Gretio is an advanced tool made for the DIY market. All procedures must be used in accordance with the vehicle's service manual or other OEM approved literature. Gretio is made exclusively for General Motors vehicles. Additional models will be supported in the future.
Rig Mechanic
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.
- Respond to service requests
- Send offers for repairs
- Real-time service tracking
- In-app payment processing
- Secure transaction guarantee
- Digital invoicing
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Transforming maintenance and repair. The RIG app easily connects drivers and mechanics when things get complicated. Respond to requests and send offers, track progress, and complete the transaction in the app. SIMPLE SERVICE RESPONSE Whether it is urgent or planned maintenance, respond to it all on the app. Send offers for tire changes, towing, or mobile service. You can even send offers through the app for requests that come in by phone. REAL-TIME TRACKING Easily identify the service point and follow the navigation to where you need to go. Notify the driver when you arrive and when service is complete. EASY TRANSACTING Drivers receive detailed invoices when work is complete and payment is made via the app. Rig holds the agreed invoice amount until service completion to guarantee a secure transaction. Visit bigrig.app for more information!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 3.9 for Rig Mechanic. Both are backed by a comparable volume of ratings — 22 and 18 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 August 27, 2026 respectively.
| Parameter | Gretio | Rig Mechanic |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (22 ratings) — better | 3.9 (18 ratings) |
| Positive reviews | 72.2% of reviews — better | 66.7% of reviews |
| Number of ratings | 22 — better | 18 |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 40 MB | 121 MB |
| Age rating | 4+ | 4+ |
| Developer | Surreal Development LLC | Rig Technologies, Inc |
Customer experience
Gretio
Rig Mechanic
In-app purchases
Gretio
- Gretio All Access$19.991 Year
- Gretio RPO Pack 1$29.99
- Gretio RPO Pack 2$29.99
- RPO Pack 3$29.99
Rig Mechanic
No in-app purchases









