Giotto ScanTool vs Gretio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Giotto ScanTool
This professional-grade automotive diagnostic tool provides extensive vehicle coverage and deep system access. It helps repair shops and fleet managers quickly service a wide range of vehicles with features like live data, bi-directional controls, and DTC reporting.
- Professional-grade enhanced coverage
- Access to ABS, airbag, powertrain, and more
- Live data and bi-directional controls
- Adaptive resets and learns
- DTC report output (XML/PDF)
- Graphing with pan and zoom
- WIFI connectivity
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Requires an AutoEnginuity Proline VCI WIFI, available for purchase at www.AutoEnginuity.com. Does not support other hardware. Coverage, coverage, coverage. In the professional repair business getting as much coverage as you can is important to effectively and quickly service any vehicle. We offer professional-grade enhanced coverage options for 58 carmakers. It’s not just the breadth of coverage that’s important—it’s also the depth of coverage. With our enhanced expansions you can have access to ABS, airbag, enhanced powertrain, instrument cluster, transmission, and dozens of other body and chassis controllers. The depth of coverage consists of live data, bi-directional controls, adaptive resets and learns, system tests, and trouble code retrieval and clearing. Whether your a fleet manager, independant repair shop, or a collision repair shop, Giotto will help repair more vehicles quickly and effectively. Powerful features include: DTC report output (XML / PDF), Mode 6 translations, graphing with pan and zoom, integrated FF and FFD (odometer, fault frequency, etc.) with DTC reports, and easy to use WIFI connectivity. *NOTE* Enhanced coverage requires activated ProLine hardware.
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.
Screenshots
Verdict
The clearest difference is review sentiment: Gretio at 72% against Giotto ScanTool's 31%. Gretio also leads on rating (3.8 vs 3.3) and update cadence (fortnightly vs every 3 months). Giotto ScanTool's advantage is in-app purchases (none vs 4) and iOS requirement (14.0 vs 18.0). On price, ratings volume, ads and device support 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. Giotto ScanTool asks for nothing beyond the download.
Gretio holds the better App Store score, 3.8 against 3.3. Both are backed by a comparable volume of ratings — 44 and 23 respectively. Written reviews point the same way: 31% of Giotto ScanTool's written reviews are positive against 72% of Gretio's.
Giotto ScanTool ships an update every 3 months, Gretio fortnightly. Both last shipped on October 24, 2026.
| Parameter | Giotto ScanTool | Gretio |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (44 ratings) | 3.8 (23 ratings) — better |
| Positive reviews | 30.8% of reviews | 72.2% of reviews — better |
| Number of ratings | 44 — better | 23 |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 912 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | AutoEnginuity | Surreal Development LLC |
Customer experience
Giotto ScanTool
Gretio
In-app purchases
Giotto ScanTool
No 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
Questions
Is Giotto ScanTool free?
Is Gretio free?
Which has better reviews, Giotto ScanTool or Gretio?
Do Giotto ScanTool or Gretio have ads?
Which is updated more often, Giotto ScanTool or Gretio?
Other comparisons
