ArcCalc vs The Phillips Machinist
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ArcCalc
This app calculates various parameters of circular arcs and segments. It supports multiple input combinations and offers unit flexibility for length and angles. Calculations are automatically saved and can be shared via email.
- Calculates 21 cases for circular arcs
- Supports length units in feet, inches, meters, centimeters, millimeters
- Angle units in degrees or radians
- Automatic saving of results
- Error checking for out-of-range inputs
- Share results via email
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ArcCalc is a simple and easy to use app for calculating all the parts of a circular arc or segment. Given any two values, this app will calculate for the radius, length, width, height, apothem, angle, and area of a circular arc. Very useful for carpenters, architects, handymen, machinists, welders, designers, technicians, engineers, do it yourselfers, and many more. This calculator utilizes simple and complex mathematics to do all the calculating for you. If you are one of those who went to calculus class and wondered where all that knowledge can be practically applied -- this is one of them. Features: * This calculator will do calculations for all twenty one cases when given any two inputs of the radius, length, width, height, apothem, angle, and area of a circular arc. All possible solutions are presented for the given two inputs. * Length units in feet, inch, meter, centimeter, millimeter can be specified for all inputs and values to be calculated. Angle unit can be in degrees or radians. * All calculations are automatically saved in the "Saved Results" window. Saved results are grouped by date of entry. Just swipe to delete an entry no longer needed. * Complete error checking function for inputs that are out of range in relation to the other given input. The calculator will give the limits for all inputs that are out of range. * Results can be shared by email. The Arc Calculator is the mobile app version of the popular online calculator "The Complete Circular Arc Calculator". Please check it out at https://www.handymath.com/cgi-bin/arc18.cgi?submit=Entry. Please check out also other calculators you might need at www.handymath.com and on the App Store. Additional Notes: The circular segment screenshots above gives a visual illustration of the parts of a circular segment. "Width" is used in place of the more proper term "Chord" as more people go with "Width".
The Phillips Machinist
Access essential machine codes, calculators, and practical resources for machinists. Get direct support from engineers and explore a library of machining information. Enhance your productivity and problem-solving on the shop floor.
- Haas G & M reference codes
- Error and Alarm Codes
- Calculator library (Inch/Metric)
- Speeds & Feeds calculator
- Direct contact with engineers
- Customizable machine and interest tracking
- FAQ library
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The Phillips Machinist is your personalized digital manufacturing assistant, with quick access to essential machine codes and calculators, direct contact with Phillips engineers, and practical resources designed to make your life easier. Spark your ingenuity with the Phillips Machinist, the only App you’ll need to succeed! The completely redesigned Phillips Machinist delivers a next level experience offering these key benefits: EASY ACCESS TO CODES AND MANUALS A few clicks and you can access Haas G & M reference codes, Error and Alarm Codes, Macro Variables, and functions – and find information on how to apply them to your machines. Right away. Right on the shop floor. Explore our additional libraries with items from Okamoto, Hermle, Kent, Universal Robots and Markforged. CALCULATOR LIBRARY Enhanced everyday Calculators for the CNC Machinist in both Inch and Metric wherever applicable. Now featuring an information page that not only explains how to use the calculator but also the core concepts behind it! Some inputs have been configured to show suggested ranges for the optimal performance of a CNC program to keep you on the cutting edge. The Result section provides accurate outputs along with supportive images for better understanding of the concept and the results are further fortified with an abundance of videos and articles related to that particular calculator. For example: In the Material Library and Speeds & Feeds Calculator, we have added Haas “Tip of the Day” videos, specifically talking about how the spindle speed and feed-rates affect the surface finish of a machined part. All of this is provided at your fingertips. You’ll have access to these calculators that help make your job easier on the shop floor. From Single Point Thread Turning to Speeds & Feeds we’ve got you covered. With 15 calculators and counting! • Single Point Thread Turning • Mat. Library-Speed & Feeds • Simple Speed & Feeds • Square Hex • Tap Drill - Cutting Tap • Tap Drill - Thread Forming • True Position • Bolt Circle • Countersink • Right Angle Triangle • Drill Tip Depth • Socket Head Cap Screw • Helicoil Tap Drill • Simple Bolt Clearance Chart • Simple Drill Chart A PERSONALIZED EXPERIENCE Your machines and your interests are at the forefront. Keep tabs on your machines, and requests right on your homepage. Look at custom curated videos and manuals to take your knowledge to the next level. See what is trending by checking out our featured trending topics. Favorite your most used manuals to keep everything just the way you want it! ASK THE EXPERTS Running into problems on the shop floor? Ask “live” questions to some of the country’s premier applications engineers. The “Ask Joe” section gives you a direct link to the Phillips applications team. Our vast FAQ library has a wealth of knowledge from general machining, 5-axis, and more! Any questions/or concerns, please reach out to us. We would love to hear from you through the app, or at tpm@phillipscorp.com
Screenshots
Verdict
The clearest difference is ads: ArcCalc at none against The Phillips Machinist's shown. ArcCalc also leads on monetization model (free vs free with in-app purchases) and review sentiment (88% vs 78%). The Phillips Machinist's advantage is update cadence (every 6 weeks vs every 5 months). On price, rating, ratings volume and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ArcCalc holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 277 and 394 respectively. Written reviews point the same way: 88% of ArcCalc's written reviews are positive against 78% of The Phillips Machinist's.
ArcCalc ships an update every 5 months, The Phillips Machinist every 6 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | ArcCalc | The Phillips Machinist |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (277 ratings) — better | 4.6 (394 ratings) |
| Positive reviews | 88.1% of reviews — better | 78.3% of reviews |
| Number of ratings | 277 | 394 — better |
| Update frequency | Every 5 months | Every 6 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 3 MB | 152 MB |
| Age rating | 4+ | 4+ |
| Developer | Roseller Sunga | Phillips Corporation |
Customer experience
ArcCalc
The Phillips Machinist
User reviews
ArcCalc
From 277 App Store ratingsWhat we love
- 👍 Accurate calculations
- 👍 Very useful for work
- 👍 Great for curved surfaces
- 👍 Simple and quick
- 👍 Free to use
Room to improve
- 🐛 Optimization needed for large screens
- 🐛 No metric units (initially)
- 🐛 Needs more unit choices
- 🐛 Incompatible with older iOS versions
The Phillips Machinist
From 394 App Store ratingsWhat we love
- 👍 Easy to navigate
- 👍 Comprehensive information
- 👍 Great for machinists
- 👍 Useful for school and work
- 👍 Handy resource
Room to improve
- 🐛 White screen on calculator
- 🐛 Speeds and feeds calculator not working
- 🐛 Unable to sign in
- 🐛 App crashes instantly
- 🐛 No volume on videos
Bugs and requests
ArcCalc
Reported bugs
2 issues- Not supported by iOS 11
- No longer works with iOS 11.0
Requested features
4 requests- Include diagram from webpage in app
- More unit choices, especially for radius
- More calculator apps from developer in one app
- Ability to set default units
The Phillips Machinist
Reported bugs
11 issues- Cannot sign in via Apple
- Password incorrect error
- Cannot reset password
- White screen on speed and feeds calculator (iPhone)
- Speeds and feeds calculator boxes not proper
Show 6 moreShow fewer
- Unable to login, registration error
- Blank white screen after update
- Signup not working
- Unable to select country for signup
- App crashes on launch
- No volume on videos
Requested features
4 requests- Fix sign-in issues
- Resolve white screen on calculator
- Enable offline functionality
- Add volume to videos
In-app purchases
ArcCalc
No in-app purchases
The Phillips Machinist
No in-app purchases
Questions
Is ArcCalc free?
Is The Phillips Machinist free?
Which has better reviews, ArcCalc or The Phillips Machinist?
Do ArcCalc or The Phillips Machinist have ads?
Which is updated more often, ArcCalc or The Phillips Machinist?
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