i vs CNC CUBE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
i
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.
- Cutting speed calculation
- RPM calculation
- Feed rate calculation
- Hole and shaft tolerance database
- Thread data
- Milling, drilling, and turning operations
Read full descriptionHide full description
iMachinist is a simple to use CNC calculator app that calculates for you the cuttings speed, RPM, feed rate and more for your milling, drilling and turning operations. iMachinist also includes a database for Hole and Shaft Tolerances and different Threads. Threads Data: - Outer Diameter (max/min) - Pitch Diameter (max/min) - Core Diameter (max/min) - Thread Height (max/min) Tolerance Data: - Zone (Shaft/Hole) - Grade (Shaft/Hole) - Diameter (Shaft/Hole) Cutting Calculator: - Tool Diameter - Cutting Speed - Spindle Speed - Number of Teeth - Feed per Tooth - Feed Rate
CNC CUBE
Read full descriptionHide full description
CNC Cube puts essential machining math in your pocket—fast, clear, and built for real shop use. Switch between metric and imperial in one tap; every calculator follows your unit preference. WHAT YOU GET • Speeds & feeds: RPM, cutting speed, and feed rate when you need them • Thread dimensions: metric and imperial reference at a glance • Material removal rate: estimate MRR for planning and comparison • Coolant pressure: handy conversions for through-spindle and flood setups • And more calculators added over time to cover your daily workflow DESIGNED FOR THE FLOOR A focused interface so you spend less time tapping and more time cutting. Favorites and history help you jump back to what matters. Whether you’re programming at the machine or checking a number between setups, CNC Cube stays out of your way. OPTIONAL AD-FREE The app is free with ads. Prefer a clean screen? A one-time in-app purchase removes banner and fullscreen ads permanently—no subscription. Questions or ideas? Reach us from Settings—we read every message we can. CNC Cube—precision where you need it. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | i | CNC CUBE |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 2.6 (9 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 16 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 8 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | ilan TETRUASHVILI | Hakon Torve |
In-app purchases
i
No in-app purchases
CNC CUBE
- Ad-Free Experience$0.991 Month
- Remove Ads$4.99
Questions
Is i free?
Is CNC CUBE free?
Do i or CNC CUBE have ads?
Which is updated more often, i or CNC CUBE?
Other comparisons
