# i vs CNC CUBE

The clearest difference is price: i at Free against CNC CUBE's $4.99. i also leads on in-app purchases (none vs 2) and ads (none vs shown). CNC CUBE's advantage is update cadence (monthly vs every 16 months) and device support (3 vs 1). On iOS requirement there is nothing between them.

i is free to download; CNC CUBE costs $4.99 up front. CNC CUBE sells 2 in-app purchases, starting at $0.99 per month. i asks for nothing beyond the download.

i ships an update every 16 months, CNC CUBE monthly. The most recent releases landed on September 16, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | i | CNC CUBE |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[2.6 (9 ratings)](https://appshunter.io/ios/app/i-machinist/id1456473668/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 16 months | **Monthly** |
| Monetization | Free | — |
| Size | 8 MB | 38 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ilan TETRUASHVILI](https://appshunter.io/developer/940821251) | [Hakon Torve](https://appshunter.io/developer/1706381768) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-machinist/id1456473668)

This utility app assists machinists with CNC calculations, including cutting speed, RPM, and feed rate. It also provides databases for hole and shaft tolerances, as well as detailed thread specifications.

**Highlights:** Cutting speed calculation, RPM calculation, Feed rate calculation, Hole and shaft tolerance database, Thread data, Milling, drilling, and turning operations

**Features:** macOS Compatibility

**In-app purchases:** none


### CNC CUBE

[App page](https://appshunter.io/ios/app/cnc-cube/id6464709228)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free Experience | $0.99 | per month |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is i free?

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

### Is CNC CUBE free?

CNC CUBE costs $4.99, and also offers in-app purchases.

### Do i or CNC CUBE have ads?

CNC CUBE shows ads; i does not.

### Which is updated more often, i or CNC CUBE?

i ships an update every 16 months, and CNC CUBE monthly. Most recently, i was updated on September 16, 2026 and CNC CUBE on September 8, 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.*