# 3D File Viewer vs GCode Scanner for CNC Machines

The clearest difference is review sentiment: GCode Scanner for CNC Machines at 100% against 3D File Viewer's 33%. GCode Scanner for CNC Machines also leads on rating (5.0 vs 4.5). 3D File Viewer's advantage is ratings volume (48 vs 3). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 3D File Viewer sells 4 in-app purchases, starting at $3.99 per month and GCode Scanner for CNC Machines sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

GCode Scanner for CNC Machines holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: 3D File Viewer has 48 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 33% of 3D File Viewer's written reviews are positive against 100% of GCode Scanner for CNC Machines's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 20, 2026 and August 27, 2026 respectively.

## The numbers

| Metric | 3D File Viewer | GCode Scanner for CNC Machines |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (48 ratings)](https://appshunter.io/ios/app/3d-file-viewer-obj-stp-and-more/id6745021064/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/gcode-scanner-for-cnc-machines/id6747010022/reviews)** |
| Number of ratings | **48** | 3 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 11 MB | 77 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andeesh Mehdi Syed](https://appshunter.io/developer/1676226599) | [Jeremiah Moore](https://appshunter.io/developer/1695450531) |

## What reviewers say

### 3D File Viewer

[App page](https://appshunter.io/ios/app/3d-file-viewer-obj-stp-and-more/id6745021064)

Easily open and explore 3D model files on your iPhone or iPad. Supports over 20 popular formats, offering smooth viewing with intuitive touch controls. Ideal for designers, engineers, architects, and students working with 3D data.

**Highlights:** Supports over 20 3D file formats, Fast and smooth 3D file viewing, Zoom, rotate, and pan with touch controls, Open files from Files app or other apps, Lightweight and easy to use, No account required

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads - Monthly | $3.99 | per month |
| Remove Ads - Annual | $29.99 | per year |
| Remove Ads - Lifetime | $29.99 | one-time |
| Remove Ads | $29.99 | one-time |


### 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 3D File Viewer free?

3D File Viewer is free to download, with in-app purchases available.

### Is GCode Scanner for CNC Machines free?

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

### Which has better reviews, 3D File Viewer or GCode Scanner for CNC Machines?

GCode Scanner for CNC Machines is rated higher. 3D File Viewer averages 4.5 out of 5 from 48 ratings, while GCode Scanner for CNC Machines averages 5.0 from 3 ratings.

### Do 3D File Viewer or GCode Scanner for CNC Machines have ads?

Neither 3D File Viewer nor GCode Scanner for CNC Machines shows ads.

### Which is updated more often, 3D File Viewer or GCode Scanner for CNC Machines?

3D File Viewer ships an update every 3 weeks, and GCode Scanner for CNC Machines every 3 weeks. Most recently, 3D File Viewer was updated on September 20, 2026 and GCode Scanner for CNC Machines on August 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.*