# HDSAFE vs CNC Simulation‑Handbook

The clearest difference is in-app purchases: HDSAFE at none against CNC Simulation‑Handbook's 1. HDSAFE also leads on iOS requirement (13.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. CNC Simulation‑Handbook sells 1 in-app purchase, starting at $1.99 per 7 days. HDSAFE asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 7, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | HDSAFE | CNC Simulation‑Handbook |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 20 MB | 31 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [华的](https://appshunter.io/developer/1686877849) | [燕燕 林](https://appshunter.io/developer/1675436596) |

## What reviewers say

### HDSAFE

[App page](https://appshunter.io/ios/app/hdsafe/id6448909747)

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

**In-app purchases:** none


### CNC Simulation‑Handbook

[App page](https://appshunter.io/ios/app/cnc-simulationhandbook/id6779476155)

This app simulates CNC lathe machining workflows, allowing users to practice G-code programming, operational training, and fault diagnosis. It provides a virtual machine control panel, tool setup, and workpiece measurement features for hands-on learning without physical equipment.

**Highlights:** G-code simulation and machining, Virtual machine control panel, Workholding and tool setup, NC-program validation and tool-path preview, Workpiece measurement and compensation, Fault-injection training

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 数控车床仿真尊贵会员 | $1.99 | per 7 days |


## Frequently asked questions

### Is HDSAFE free?

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

### Is CNC Simulation‑Handbook free?

CNC Simulation‑Handbook is free to download, with in-app purchases available.

### Do HDSAFE or CNC Simulation‑Handbook have ads?

Neither HDSAFE nor CNC Simulation‑Handbook shows ads.

### Which is updated more often, HDSAFE or CNC Simulation‑Handbook?

HDSAFE ships an update every 3 weeks, and CNC Simulation‑Handbook every 3 weeks. Most recently, HDSAFE was updated on September 7, 2026 and CNC Simulation‑Handbook on September 16, 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.*