# GCode Scanner for CNC Machines vs OTEC

The clearest difference is in-app purchases: OTEC at none against GCode Scanner for CNC Machines's 3. OTEC also leads on iOS requirement (14.0.0 vs 16.4). On price, update cadence, ads and device support 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. OTEC asks for nothing beyond the download.

GCode Scanner for CNC Machines ships an update every 3 weeks, OTEC monthly. The most recent releases landed on September 27, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | GCode Scanner for CNC Machines | OTEC |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 77 MB | 24 MB |
| Requires iOS | 16.4 | **14.0.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jeremiah Moore](https://appshunter.io/developer/1695450531) | [OTEC Präzisionsfinish GmbH](https://appshunter.io/developer/1860278470) |

## What reviewers say

### 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 |


### OTEC

[App page](https://appshunter.io/ios/app/otec/id6756361669)

**In-app purchases:** none


## Frequently asked questions

### Is GCode Scanner for CNC Machines free?

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

### Is OTEC free?

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

### Do GCode Scanner for CNC Machines or OTEC have ads?

Neither GCode Scanner for CNC Machines nor OTEC shows ads.

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

GCode Scanner for CNC Machines ships an update every 3 weeks, and OTEC monthly. Most recently, GCode Scanner for CNC Machines was updated on September 27, 2026 and OTEC on October 1, 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.*