Comparison

Machinist Calc Pro vs Angle Unit Converter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Machinist Calc Pro

This app provides machining professionals with a comprehensive set of tools for calculations related to speeds, feeds, threads, and trigonometry. It aims to increase productivity and reduce tool wear by offering quick access to essential data, replacing the need for physical charts and books.

Highlights
  • Speeds and Feeds calculations
  • Thread size and drill size look-ups
  • Trigonometric functions
  • Right triangle math
  • US and Metric unit conversions
  • Built-in help
Features
Read full description

Ideal for machining pros, machine setters, tool and die makers, production engineers, shop managers and shop owners who want to increase productivity and profits in the design, layout and set-up stages of production and reduce wear and tear on costly cutting tools. And while perhaps obvious, if you change from an iOS device to a non-iOS device, you WILL need to buy a new license as they are incompatible. The Machinist Calc Pro is the first machining math and reference tool to provide a complete assortment of machine shop solutions. It has more complete Thread data than the Machinery's Handbook, including step-saving Thread and Drill Size chart look-ups, speeds and feeds, right triangle solutions, bolt patterns and much more. Spend more time machining and less time looking up specs and data in books, on charts or in computer programs. FEATURES: • Created by Calculated Industries, the originator of the award-winning Construction Master calculators • Built-in help, just press and hold a key • All the functionality and solutions of the handheld Machinist Calc Pro calculators and optimized for the iPhone device user • Entry Editing Backspace Key – with a swipe of a finger (left - to - right) • A complete User’s Guide is available free at www.calculated.com DEDICATED FUNCTIONS: • Speeds and Feeds - Calculate for Milling, Turning and Drilling; Spindle Speed (RPM), Feed Rate (IPM), Cut Speed, Cut Feed, Feed per Tooth, Number of Teeth and Radial Chip Thinning adjustment factor • Thread Size - Enter numeric, fractional or metric thread sizes and display tap, roll tap, close and free fit drill sizes. Display pitch, major and minor diameters • Drill Point - Enter the cutting angle and Drill Size and calculate the Drill Point cut depth • Drill Size - Enter numeric, letter, fractional or metric Drill Size and display the closest fitting Drill Size and scroll through available drill sizes • 3-Wire Measure - Enter Wire Size (or use calculated Best Wire size) and 3-Wire Measurement to calculate pitch diameter • Trigonometric Functions - Sine, Cosine, Tangent, Arcsine, Arccosine, Arctangent • Right Triangle Math - Enter, calculate Angle, Hypotenuse, Opposite and Adjacent side lengths Additional Features: • Thread Classification Tables ◦U.S. - Internal (3) 1B, 2B, 3B - External (3) 1A, 2A, 3A ◦Metric - Internal (14) 3G-9G and 3H-9H - External (28) 3g-9g, 3h-9h, 3e-9e, 3f-9f • U.S. and Metric Unit Entries and Conversions ◦Decimal Inches/mils ◦Feet-Inch-Fractions ◦m, mm, cm ◦Area, Volume and Weight • Works as a Standard Calculator TRADEMARKS: Machinist Calc® is a registered trademark of Calculated Industries, Inc.

About

Angle Unit Converter

This application converts angle measurements between five different units: degrees, radians, degrees/arcminutes/arcseconds, arcminutes, and arcseconds. Simply input your value and select the desired output units for instant conversion.

Highlights
  • Converts between 5 angle units
  • Supports degrees, radians, arcminutes, arcseconds
  • Converts degrees to degrees/arcminutes/arcseconds
  • Simple input and unit selection
  • Displays converted values instantly
Features
Read full description

Angle Unit Converter application converts the input angle value into 5 types of units. Converting from degrees to degrees / arcminutes / arcseconds is also easy. The units to be converted are degrees [°], radians [rad], degrees / arcminutes / arcseconds [°′″], arcminutes [′], arcseconds [″]. Just enter the value of the angle, then tap the blue unit selection button to select the unit of the angle, and the values converted to 5 types of units will be displayed.

Screenshots

Machinist Calc Pro4 screens
Angle Unit Converter4 screens

Verdict

The call

The clearest difference is price: Angle Unit Converter at $1.99 against Machinist Calc Pro's $24.99. Angle Unit Converter also leads on iOS requirement (12.0 vs 15.0). Machinist Calc Pro's advantage is rating (4.8 vs 2.0) and review sentiment (56% vs 33%). On ads, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Machinist Calc Pro costs $24.99 and Angle Unit Converter $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Machinist Calc Pro holds the better App Store score, 4.8 against 2.0. That said, the two scores are not equally well evidenced: Machinist Calc Pro has 31 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 56% of Machinist Calc Pro's written reviews are positive against 33% of Angle Unit Converter's.

UpkeepUpdate frequency

Machinist Calc Pro ships an update every 5 months, Angle Unit Converter every 11 months. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Machinist Calc Pro versus Angle Unit Converter: the parameters behind the verdict, then further details
ParameterMachinist Calc ProAngle Unit Converter
Price$24.99$1.99 — better
Rating4.8 (31 ratings) — better2.0 (1 ratings)
Positive reviews55.6% of reviews — better33.3% of reviews
Number of ratings31 — better1
Update frequencyEvery 5 months — betterEvery 11 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size14 MB8 MB
Age rating12+4+
DeveloperCalculated IndustriesKei Suefuji

Customer experience

Machinist Calc Pro

All ratings27 ratings
Positive96.3%
Neutral0.0%
Negative3.7%
Written reviews18 reviews
Positive55.6%
Neutral0.0%
Negative44.4%

Angle Unit Converter

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

None

Machinist Calc Pro

No in-app purchases

None

Angle Unit Converter

No in-app purchases

Questions

Is Machinist Calc Pro free?
Machinist Calc Pro costs $24.99, with no in-app purchases.
Is Angle Unit Converter free?
Angle Unit Converter costs $1.99, with no in-app purchases.
Which has better reviews, Machinist Calc Pro or Angle Unit Converter?
Machinist Calc Pro is rated higher. Machinist Calc Pro averages 4.8 out of 5 from 31 ratings, while Angle Unit Converter averages 2.0 from 1 ratings.
Do Machinist Calc Pro or Angle Unit Converter have ads?
Neither Machinist Calc Pro nor Angle Unit Converter shows ads.
Which is updated more often, Machinist Calc Pro or Angle Unit Converter?
Machinist Calc Pro ships an update every 5 months, and Angle Unit Converter every 11 months. Most recently, Machinist Calc Pro was updated on November 4, 2026 and Angle Unit Converter on November 3, 2026.

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