ArcCalc vs Machining Advisor Pro
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".
Machining Advisor Pro
This app provides recommended running parameters for CNC machining, specifically for Helical Solutions and Harvey Tool products. It generates customized speeds and feeds based on your end mill, tool path, material, and machine setup, optimizing metal removal rates and shop productivity.
- CNC speeds and feeds calculator
- Optimized for 30,000+ products
- Supports 300+ material grades
- Intuitive user interface
- Customized setup options
- Quick search functionality
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Machining Advisor Pro quickly, seamlessly, and accurately provides recommended running parameters for CNC machining with your Helical Solutions and Harvey Tool products. Generate specialized speeds and feeds by pairing your end mill with your exact tool path, material, and machine setup. OPTIMIZED FOR 30,000+ PRODUCTS Increase metal removal rates and shop productivity with customized running parameters specifically designed for Helical Solutions and Harvey Tool products. 300+ MATERIAL GRADES Take into account the specific material grade and condition of your workpiece. INTUITIVE USER INTERFACE Save time by quickly determining your end mill’s optimal running parameters. CUSTOMIZED SETUP OPTIONS Enter your machine and setup details to generate personalized Speeds & Feeds. QUICK SEARCH FUNCTIONALITY Narrow down options quickly with a convenient Type Ahead feature and Auto-Tool selection.
Screenshots
Verdict
The clearest difference is review sentiment: ArcCalc at 88% against Machining Advisor Pro's 17%. ArcCalc also leads on rating (4.8 vs 4.0) and ads (none vs shown). Machining Advisor Pro's advantage is update cadence (every 6 weeks vs every 5 months). On price, ratings volume, in-app purchases and device support 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 4.0. Both are backed by a comparable volume of ratings — 232 and 162 respectively. Written reviews point the same way: 88% of ArcCalc's written reviews are positive against 17% of Machining Advisor Pro's.
ArcCalc ships an update every 5 months, Machining Advisor Pro every 6 weeks. The most recent releases landed on October 3, 2026 and September 29, 2026 respectively.
| Parameter | ArcCalc | Machining Advisor Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (232 ratings) — better | 4.0 (162 ratings) |
| Positive reviews | 88.1% of reviews — better | 17.2% of reviews |
| Number of ratings | 232 — better | 162 |
| Update frequency | Every 5 months | Every 6 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Roseller Sunga | HARVEY TOOL COMPANY, LLC |
Customer experience
ArcCalc
Machining Advisor Pro
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
Machining Advisor Pro
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ArcCalc
No in-app purchases
Machining Advisor Pro
No in-app purchases
Questions
Is ArcCalc free?
Is Machining Advisor Pro free?
Which has better reviews, ArcCalc or Machining Advisor Pro?
Do ArcCalc or Machining Advisor Pro have ads?
Which is updated more often, ArcCalc or Machining Advisor Pro?
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