Comparison

Right Angle vs Pipefitter_Pro

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

Head to head
About

Right Angle

This app provides precise calculations for geometric shapes like triangles, trapezoids, and circles. It offers multiple angle and length formats, a custom keyboard for job site use, and helpful error messages. Designed for professionals in construction, engineering, and trades.

Highlights
  • Calculates triangles, trapezoids, and circles
  • Supports decimal degrees, radians, DMS, percent grade, and pitch
  • Handles decimal, feet/inches/fractions length formats
  • Custom on-screen keyboard with job site symbols
  • VoiceOver support for accessibility
  • Available in English and Spanish
Features
Read full description

Right Angle is a calculator built for carpenters, builders, surveyors, machinists, and engineers — anyone who needs to solve a triangle, a trapezoid, or a circle without reaching for a notepad and the law of sines. Enter any valid combination of sides and angles and Right Angle solves the rest, including perimeter and area. The right triangle calculator is included for free; every other shape unlocks with a one-time Pro purchase or subscription. SHAPES • Right triangle (free) • Oblique triangle • Isosceles, right, and general trapezoids • Full circle — enter radius, diameter, or circumference • Segment of a circle ANGLE FORMATS • Decimal degrees • Radians • Degrees / minutes / seconds (DMS) • Percent grade • Pitch (x-over-12) LENGTH FORMATS • Decimal — the original, unitless entry. Best for metric. • Feet, inches & fractions — type values like 2' 5 1/2". • Inches & fractions — type values like 40 1/2". Pick a fraction precision from 1/2 down to 1/64 inch. Inputs and outputs both use the format you choose, and you can switch any time from Settings. DESIGNED FOR THE JOB SITE • A custom on-screen keyboard puts the symbols you need — feet, inches, fraction slash, degree, prime, double-prime — one tap away. • Helpful errors when an input combination can't be solved, instead of silent failures. • Available in English and Spanish — iOS picks the language to match your device. • Full VoiceOver support across the keyboard, input fields, shape diagrams, and results. Animations respect the Reduce Motion setting. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: http://rightangleapp.com/privacy.html

About

Pipefitter_Pro

This app is a pipe calculation tool that helps determine offsets, angles, and pipe segments. It offers a visual representation of angles and a slider for quick offset dimensioning, with dynamic angle updates. Future updates aim to include 3D angle calculations.

Highlights
  • Calculate pipe offsets
  • Determine angles
  • Calculate pipe segments
  • Visual angle representation
  • Slider for offset dimensioning
  • Dynamic angle updates
Features
Read full description

Pipefitter Pro is a calculator for pipefitters. It calculates offsets, elbow angles and spool lengths, and draws what it works out. Choose a case from the menu, enter the pipe diameter and elbow radius on the workshop keypad, then read the available results: angles, the spool between elbows, elbow takeout, arc lengths and caliper dimensions. CASES AND VIEWS • BACK TO BACK — two elbows, with either the angle or the offset unknown. • S TYPE — offset, travel or a fixed 45° option. • TEE OFFSET — calculations that include the branch diameter. • CALCULATOR — one elbow cut out of a 90°. • 3D — two elbows in space, set using the A, B and C dimensions of a box. • SLIDER / SLIDER S TYPE / SLIDER TEE — change the angle and watch the offset change. • 3D SLIDER — set the elbow orientation in a spatial model and read the angles, the insert and the live box dimensions. The box is a visual reference, not a cut length. Depending on the case, results appear on the Angle, Dimensions and Elbow tabs; selected cases add a 3D view you can rotate and zoom. UNITS AND INPUT Lengths in millimeters, centimeters and inches. Feet-and-inches notation and decimal or fractional inches are also supported. Choose 1/16 or 1/32 precision for inch fractions. Angles are given in decimal degrees. The workshop keypad and fraction picker help you enter dimensions; add frequently used cases to favorites. PIPE AND ELBOW DIMENSIONS The DIMENSIONS tile opens the built-in NPS/DN table. It contains outside diameters and centerline radii for long-radius and short-radius elbows. Add and edit dimensions, then use them in calculations. Save a list backup to a file and restore the list from a backup. BEFORE YOU CUT Pipefitter Pro supports the preparation of workshop work. Check the dimensions against your technical documentation and your shop procedures before cutting and welding.

Screenshots

Right Angle4 screens
Pipefitter_Pro4 screens

Verdict

The call

The clearest difference is price: Right Angle at Free against Pipefitter_Pro's $10.99. Right Angle also leads on rating (3.9 vs 3.0) and update cadence (every 11 days vs every 24 months). Pipefitter_Pro's advantage is in-app purchases (none vs 9) and iOS requirement (15.0 vs 26.0). On ads 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

Right Angle is free to download; Pipefitter_Pro costs $10.99 up front. Right Angle sells 9 in-app purchases, starting at $2.99 per month. Pipefitter_Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Right Angle holds the better App Store score, 3.9 against 3.0. That said, the two scores are not equally well evidenced: Right Angle has 30 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 73% of Right Angle's written reviews are positive against 54% of Pipefitter_Pro's.

UpkeepUpdate frequency

Right Angle ships an update every 11 days, Pipefitter_Pro every 24 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

Scorecard8 real differences · 2 level
Right Angle versus Pipefitter_Pro: the parameters behind the verdict, then further details
ParameterRight AnglePipefitter_Pro
PriceFree — better$10.99
Rating3.9 (30 ratings) — better3.0 (2 ratings)
Positive reviews73.3% of reviews — better53.8% of reviews
Number of ratings30 — better2
Update frequencyEvery 11 days — betterEvery 24 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.015.0 — better
Further details — not scored
Size8 MB50 MB
Age rating4+4+
DeveloperJerry MayersTomasz Szymanski

Customer experience

Right Angle

All ratings30 ratings
Positive70.0%
Neutral3.3%
Negative26.7%
Written reviews86 reviews
Positive73.3%
Neutral4.7%
Negative22.1%

Pipefitter_Pro

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews13 reviews
Positive53.8%
Neutral7.7%
Negative38.5%

Bugs and requests

Right Angle

Reported bugs

5 issues
  • App crashes after startup
  • Update caused app to crash
  • Loss of previously purchased unlocked app
  • Keyboard covers input fields
  • App changes mm to unspecified units

Requested features

9 requests
  • Restore fraction support
  • Restore feet and inches support
  • Provide both angles of a right triangle
  • Allow scrolling or hiding the keyboard
  • Bundling with other tools
Show 4 more
  • Add metric units (millimeters)
  • Option to choose metric inputs
  • Dark mode option
  • Advanced analytics dashboard

Pipefitter_Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

Right Angle

Subscriptions2
  • Renews Monthly14 Days trial$2.991 Month
  • Renews Yearly1 Month trial$14.991 Year
One-time7
  • Small Tip$2.99
  • Medium Tip$4.99
  • Segments Calculator$5.99
Show 4 more
  • Oblique Triangle Calculator$5.99
  • Segment & Oblique Triangle$6.99
  • Large Tip$9.99
  • Huge Tip$29.99
None

Pipefitter_Pro

No in-app purchases

Questions

Is Right Angle free?
Right Angle is free to download, with in-app purchases available.
Is Pipefitter_Pro free?
Pipefitter_Pro costs $10.99, with no in-app purchases.
Which has better reviews, Right Angle or Pipefitter_Pro?
Right Angle is rated higher. Right Angle averages 3.9 out of 5 from 30 ratings, while Pipefitter_Pro averages 3.0 from 2 ratings.
Do Right Angle or Pipefitter_Pro have ads?
Neither Right Angle nor Pipefitter_Pro shows ads.
Which is updated more often, Right Angle or Pipefitter_Pro?
Right Angle ships an update every 11 days, and Pipefitter_Pro every 24 months. Most recently, Right Angle was updated on November 6, 2026 and Pipefitter_Pro on November 7, 2026.

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