# CNC Utility Pro — Machinist Calculator Tools

> Machinist calculator for speeds, feeds, threads, units, triangles, and bolt circles. (iPhone/iPad app by Shashwat Patel.)

- Source: https://appshunter.io/ios/app/cnc-utility-pro/id6761950958 (this page in markdown: same URL + `.md`)
- Developer: [Shashwat Patel](https://appshunter.io/developer/1873309489)
- Category: Utilities, Productivity
- Price: $0.99 (on sale, was $4.99)
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 9+
- Requires: iOS 17.6 · 4 MB
- Languages: American English
- Released: 2026-04-20
- Data updated: 2026-08-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/cnc-utility-pro/id6761950958/reviews.md

## What is CNC Utility Pro?

CNC Utility Pro is a fast and reliable machining companion built for real shop work. It brings essential CNC calculations into one simple and easy to use app so you can focus on precision and productivity instead of searching through charts or doing manual math.

This app is designed for machinists, CNC operators, toolmakers, engineering students, and anyone working with machines who needs quick and accurate results on the shop floor. Every feature is built with a focus on speed, simplicity, and usability.

With CNC Utility Pro you get a complete set of practical tools that are used every day in machining.

Speeds and Feeds Calculator helps you quickly determine spindle speed and feed rate based on tool diameter, surface speed, flutes, and chip load. This allows you to make better cutting decisions and improve tool life and efficiency.

Tap Drill Chart provides instant access to common thread sizes and their recommended drill sizes. Instead of searching through tables, you can find the correct drill in seconds and keep your workflow smooth.

Unit Converter makes it easy to convert between millimeters, inches, and feet. Whether you are switching between metric and imperial units or checking measurements, this tool keeps everything consistent and accurate.

Triangle Helper simplifies shop math by helping you calculate hypotenuse and angles for right triangles. This is especially useful for layout work, setups, and quick geometry calculations.

Bolt Circle Calculator allows you to calculate hole positions and angles based on the number of holes and bolt circle diameter. This is ideal for machining circular patterns and ensures precision every time.

CNC Utility Pro is built with a clean and simple interface so you can get results quickly without distractions. There are no unnecessary features, no complicated menus, and no learning curve. Just open the app, enter your values, and get accurate results instantly.

The app works offline, so you can rely on it anywhere in the shop without needing an internet connection. It loads quickly and responds instantly, helping you save time and stay focused on your work.

CNC Utility Pro is designed to reduce errors, improve efficiency, and support better decision making in machining tasks. Whether you are an experienced machinist or just getting started, this app provides reliable tools that you can use every day.

I am committed to keeping CNC Utility Pro simple, useful, and effective. Future updates will continue to improve accuracy, expand tool options, and enhance the overall experience while maintaining the same clean and straightforward design.

If you are looking for a practical machining calculator that delivers fast results and real value, CNC Utility Pro is the right choice.

Work smarter, save time, and keep your machining precise with CNC Utility Pro.

## Key features

- Speeds and Feeds Calculator
- Tap Drill Chart
- Unit Converter
- Triangle Helper
- Bolt Circle Calculator
- Offline functionality


## Frequently asked questions about CNC Utility Pro

### What is CNC Utility Pro?

CNC Utility Pro is a paid utility app designed to provide essential calculations for machinists and CNC operators. It includes tools for speeds and feeds, tap drill charts, unit conversion, triangle calculations, and bolt circles, all with a focus on speed and simplicity for shop floor use.

### Does CNC Utility Pro work offline?

Yes, CNC Utility Pro works offline. This means you can rely on its tools anywhere in the shop without needing an internet connection, ensuring continuous productivity.

### What devices is CNC Utility Pro available on?

CNC Utility Pro is available on iPhone and iPad devices, making it accessible for a wide range of users in the machining industry.

### How much does CNC Utility Pro cost?

CNC Utility Pro is a paid application, priced at $0.99. This one-time purchase grants you access to all its machining calculator tools.

### What is the age rating for CNC Utility Pro?

CNC Utility Pro has an age rating of 9+, indicating it is suitable for users aged 9 and above.

### How often is CNC Utility Pro updated?

The app was last updated on June 24, 2026, with version 1.2.1. The developer is committed to future updates to improve accuracy and expand tool options.

### What are the main calculation tools in CNC Utility Pro?

The main tools include a Speeds and Feeds Calculator, Tap Drill Chart, Unit Converter, Triangle Helper, and Bolt Circle Calculator, all designed for quick and accurate results.

### What is the user feedback on CNC Utility Pro?

Based on the available data, CNC Utility Pro has received a 5.0-star rating from 1 review, suggesting a highly positive initial user experience.

## Version history (last 5 releases)

### 1.2.2 — 2026-08-14

Persistence & UX
Favorites — long-press any tab to pin it to a dedicated Favorites row
Last-used tab is remembered between launches
Search bar to filter calculators by name
Export/share button on several results (Speeds & Feeds, Tap Drill, Triangle Solver, Material Weight, Masonry, Fencing, Job Cost, Panel Load)
Settings screen with an appearance mode toggle — System / Light / Dark now genuinely change the color palette (previously "Light" didn't actually render light colors)
Optional one-time "tip" purchase in Settings for anyone who wants to support development — not a paywall, the app stays fully unlocked at your $5 one-time price
New trades calculators
Plumbing — pipe slope/fall, pipe volume & flow/fill time
HVAC — BTU heat load estimator, duct sizing
Electrical — new Panel/Service Load mode (whole-panel sizing via simplified NEC 220 method), added alongside your existing wire gauge, voltage drop, and conduit fill tools
Framing — stud count, deck joist span checker, deck board calculator
Masonry — block/brick + mortar calculator
Landscaping — mulch/soil/gravel volume, paver/patio calculator
Fencing — posts, rails, pickets, concrete
Job Cost Estimator — full quote builder (materials + labor + overhead + contingency + markup → final price and margin)

### 1.2.1 — 2026-06-24

v1.0 — Original CNC Utility Pro (3 files)

Live Machining Simulator
Basic Speeds & Feeds
Tap Drill Chart
Micrometer/Vernier Quiz


v2.0 — Rebuilt as single ContentView.swift (8 tabs)

Speeds & Feeds — material picker (8 materials), carbide/HSS toggle, auto-suggested SFM & chip load, RPM, feed rate (in/min + mm/min), MRR, HP estimate, formula reference
Tap Drill — full UNC/UNF (#0-80 → 1"-14") + full Metric ISO (M1 → M30), 75%/50% thread drill, decimal inch, searchable, tap-for-detail card
Converter — 12 categories, 100+ units (Length, Area, Volume, Mass, Speed, Temp, Torque, Pressure, Force, Power, Angle, Flow), wheel picker, swap button, all-at-once conversion table
Triangle Solver — SSS, SAS, ASA, right triangle, all sides/angles/area/trig values, auto triangle type detection
Bolt Hole Circle — canvas preview with numbered holes, XY coordinate table, auto G-code output
G Codes — 50+ codes, plain-English descriptions, example per code, group filter, search
M Codes — 35+ codes, full descriptions, examples, group filter, search
Control Panels — HAAS NGC, OKUMA OSP, Hardinge with color-coded buttons, press animation, tap-to-explain every button


v3.0 — Shop Math tab added (4 carpenter calculators)

Board Feet & Lumber Cost — simple + advanced, 8 species with real pricing, 5 grades with multipliers, saw kerf loss, cut list builder, weight estimate
Stair Stringer — risers/treads/angle/stringer length, IRC code compliance checks, fraction readout (e.g. 7 9/16"), step-by-step layout guide
Roof & Rafter — live pitch diagram canvas, common rafter length, pitch factor, plumb/level cut angles, ridge deduction, rafter count, lumber + roofing material cost, pitch reference table
Concrete — 5 shapes (slab, footing, column, sonotube, steps), bag size selector, truck vs bag cost, mix design guide, weight estimate


v4.0 — Construction tab added (8 calculators)

Drywall & Framing — gross/net wall + ceiling area, door/window deductions, sheet size selector, stud count, plate footage, combined material cost
Paint & Coating — 6 surface types with real coverage rates, 5 paint types with price multipliers, primer estimate, ceiling toggle
Flooring — hardwood, LVP, tile (with grout joint), laminate, carpet (auto sq yd), installation + underlayment cost
Roofing Materials — 4 shingle types with lifespan, pitch factor, squares, bundles, 4 underlayment types, ridge cap, drip edge
Excavation & Grading — rectangle/circle/trench, 4 soil types with real swell factors, loose CY, truck loads, haul cost
Insulation — batts/blown/spray foam/rigid board, R-value target selector (R-13 → R-60), depth needed per type, R/inch reference
Steel Beam & Load — 20 W-beam sections (W4×13 → W36×135), UDL/point loads, moment/shear/deflection, L/360 and capacity code checks
Electrical — wire gauge selector with full NEC ampacity table, load/circuit calculator, voltage drop with 3% NEC check, conduit fill with 40% NEC check

### 1.2 — 2026-06-24

Expanded & Rebuilt

Speeds & Feeds now includes material picker (8 materials), carbide vs HSS toggle, auto-suggested SFM & chip load, MRR, estimated HP, and formula reference card
Tap Drill now has the full Unified table (#0-80 → 1"-14") AND full Metric ISO table (M1 → M30), with 75%/50% thread drill, decimal inch, searchable, tap to see detail card

Brand New Tabs

Converter — 12 categories, 100+ units (Length, Area, Volume, Mass, Speed, Temp, Torque, Pressure, Force, Power, Angle, Flow Rate) with wheel picker, swap button, and full all-at-once conversion table
Triangle Solver — SSS, SAS, ASA, right triangle, outputs all sides/angles/area/trig values, auto-detects triangle type
Bolt Hole Circle — any count/BCD/start angle, live canvas preview with numbered holes, coordinate table, auto-generated G-code
G Codes — 50+ codes, full plain-English descriptions, example line per code, filterable by group
M Codes — 35+ codes, same treatment as G codes
Control Panels — OKUMA OSP, HAAS NGC, Hardinge with color-coded buttons, press animation, and tap-to-explain for every single button

### 2 — 2026-05-01

This update brings one of the most powerful improvements yet, focused on making CNC Utility Pro faster, smarter, and even more practical for real machinists on the shop floor. Built from real-world experience and continuous feedback, this version enhances both functionality and usability while keeping the app simple, reliable, and efficient.
The biggest addition in this update is the all-new G-Code and M-Code Reference. Instead of searching manuals or relying on memory, machinists now have quick access to essential CNC codes directly inside the app. The reference is designed with clarity in mind, providing simple explanations and real examples so you can understand and apply codes instantly. A built-in search feature allows you to find any code within seconds, helping reduce downtime and improve workflow efficiency.
We have also refined the overall user experience to make navigation smoother and more intuitive. The interface has been optimized to ensure that every tool is easy to access with minimal effort. Whether you are calculating speeds and feeds or checking drill sizes, the experience now feels faster and more responsive.
Performance improvements have been made across the entire app. Calculations now load quicker, transitions are smoother, and the app runs more efficiently even during heavy use. These enhancements ensure that CNC Utility Pro remains reliable when you need it the most, especially in time-critical machining environments.
The core tools that machinists rely on every day have been further polished. Speed and feed calculations, unit conversions, bolt hole circle calculations, Pythagorean triangle solving, and tap drill sizing have all been fine-tuned for better accuracy and ease of use. The goal is simple: give you precise results quickly without unnecessary complexity.
This update also focuses on maintaining a clean and minimal design. CNC Utility Pro continues to follow a “keep it simple” approach, removing clutter and distractions so you can focus on what truly matters—your work. Every feature is carefully designed to provide value without overwhelming the user.
Behind this update is a commitment to continuous improvement. As a machinist with years of hands-on experience, I understand the real challenges faced in the field. CNC Utility Pro is built not just as an app, but as a practical tool to improve efficiency, reduce errors, and make everyday machining tasks easier.
Thank you for your continued support. More powerful features and improvements are on the way as we continue to evolve CNC Utility Pro into the ultimate companion for machinists worldwide.

### 1.0 — 2026-04-20

No release notes.

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All apps by Shashwat Patel: https://appshunter.io/developer/1873309489

## Related topics

[cnc utility pro](https://appshunter.io/ios/topics/cnc-utility-pro) · [cnc](https://appshunter.io/ios/topics/cnc)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*