# PetZeye Tracking vs GCode Scanner for CNC Machines

The clearest difference is in-app purchases: PetZeye Tracking at none against GCode Scanner for CNC Machines's 3. GCode Scanner for CNC Machines's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. GCode Scanner for CNC Machines sells 3 in-app purchases, starting at $4.99 per 7 days. PetZeye Tracking asks for nothing beyond the download.

PetZeye Tracking ships an update every 2 months, GCode Scanner for CNC Machines every 3 weeks. The most recent releases landed on October 8, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | PetZeye Tracking | GCode Scanner for CNC Machines |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/gcode-scanner-for-cnc-machines/id6747010022/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 50 MB | 77 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [EYNWA Zilos Ltd](https://appshunter.io/developer/1656669977) | [Jeremiah Moore](https://appshunter.io/developer/1695450531) |

## What reviewers say

### PetZeye Tracking

[App page](https://appshunter.io/ios/app/petzeye-tracking/id6738958749)

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

**In-app purchases:** none


### GCode Scanner for CNC Machines

[App page](https://appshunter.io/ios/app/gcode-scanner-for-cnc-machines/id6747010022)

This tool allows users to view and simulate CNC machine code (G-code) and 3D model files (STL) before production. It helps prevent errors, save tools, and reduce setup times for machinists, programmers, and engineers.

**Highlights:** G-code viewer with real-time toolpath playback, Error detection for gouges and over-travels, STL model viewer, Universal G-code compatibility, Shop-floor ready interface, Import from cloud storage or local device

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly Membership | $4.99 | per 7 days |
| Pro Monthly Membership | $7.99 | per month |
| Pro Annual Membership | $69.99 | per year |


## Frequently asked questions

### Is PetZeye Tracking free?

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

### Is GCode Scanner for CNC Machines free?

GCode Scanner for CNC Machines is free to download, with in-app purchases available.

### Do PetZeye Tracking or GCode Scanner for CNC Machines have ads?

Neither PetZeye Tracking nor GCode Scanner for CNC Machines shows ads.

### Which is updated more often, PetZeye Tracking or GCode Scanner for CNC Machines?

PetZeye Tracking ships an update every 2 months, and GCode Scanner for CNC Machines every 3 weeks. Most recently, PetZeye Tracking was updated on October 8, 2026 and GCode Scanner for CNC Machines on September 27, 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.*