Right Angle vs Easy Offset
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Right Angle
This app calculates triangles and segments of circles. It supports various angle input formats and offers solutions for oblique triangles and circle segments with optional add-ons. A right triangle calculator is included for free.
- Triangle solver
- Circle segment calculator
- Multiple angle units (degrees, radians, DMS, grade, x/12)
- Oblique triangle solver (add-on)
- Circle segment solver (add-on)
- Free right triangle calculator
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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
Easy Offset
This application simplifies HVAC calculations for offsets, including cut joints, elbow centerlines, and lengths for any angle. It offers improved accuracy and saves time by eliminating the need for manual calculations and reducing material waste in the field.
- Calculates cut joints
- Calculates elbow centerlines
- Calculates overall lengths for offsets
- Supports any angle offsets
- Handles various elbow types (round, rectangular)
- Supports round taps and wye branches
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Easy Offset is an easy to use program designed for the HVAC industry that calculates cut joints, elbow centerlines, and overall lengths for offsets of any angle. Saves time: -faster than using a calculator -improved accuracy -no multipliers or trig formulas to remember -reduces errors -minimizes cutting in the field and wasted material -use any angle -useful for field layout and detailing Types of Offsets: -round elbows -rectangular elbows with radius heel and throat -rectangular elbows with straight heel and throat -round taps on an angle -rolled nineties -wye branches
Screenshots
Verdict
The clearest difference is price: Right Angle at Free against Easy Offset's $4.99. Right Angle also leads on update cadence (every 6 days vs every 9 months) and review sentiment (73% vs 63%). Easy Offset's advantage is in-app purchases (none vs 9) and rating (4.3 vs 3.9). On ratings volume, 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
Right Angle is free to download; Easy Offset costs $4.99 up front. Right Angle sells 9 in-app purchases, starting at $2.99 per month. Easy Offset asks for nothing beyond the download.
Easy Offset holds the better App Store score, 4.3 against 3.9. Both are backed by a comparable volume of ratings — 30 and 25 respectively. Written reviews complicate that: 73% of Right Angle's written reviews are positive against 63% of Easy Offset's, so the app with the better star average is not the one people write more warmly about.
Right Angle ships an update every 6 days, Easy Offset every 9 months. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.
| Parameter | Right Angle | Easy Offset |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 3.9 (30 ratings) | 4.3 (25 ratings) — better |
| Positive reviews | 73.3% of reviews — better | 62.5% of reviews |
| Number of ratings | 30 — better | 25 |
| Update frequency | Every 6 days — better | Every 9 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Best chart rank | — | #31 — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 9.1 — better |
| Further details — not scored | ||
| Size | 3 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Jerry Mayers | Allen Sieler |
Customer experience
Right Angle
Easy Offset
User reviews
Right Angle
From 30 App Store ratingsWhat we love
- 👍 Easy to use
- 🚀 Saves time
- 🛠️ Useful for construction/trades
- 📐 Accurate calculations
- 💡 Unique functionality (historically)
Room to improve
- 🐛 Recent updates removed key features
- 🐛 In-app purchases required for previously free features
- 🐛 Loss of purchase after update
- 🐛 App now requires payment for features
- 🐛 Misleading free app description
Easy Offset
From 25 App Store ratingsWhat we love
- 👍 Very accurate and simple
- 🚀 Extremely fast and easy to use
- 👍 Great for measuring and laying out duct systems
- 👍 Time saver for sheet metal trade
- 👍 User-friendly and fast on site
Room to improve
- 🐛 Not handy without fittings
- 🐛 Less features than previous version
- 🐛 Not working on newer iOS versions
- 🐛 Incompatible with iOS 11 and later
- 🐛 App stopped working after phone updates
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 moreShow fewer
- Add metric units (millimeters)
- Option to choose metric inputs
- Dark mode option
- Advanced analytics dashboard
Easy Offset
Reported bugs
15 issues- Update took away some features
- No tools menu and can't see certain diagrams
- Not working on my iPhone
- Not compatible with the latest version of the iPhone
- No longer works with the updated iPhone
Show 10 moreShow fewer
- App has stopped working
- App no longer works with the new update
- Won't run on ISO 11
- Doesn't work with new IOS11
- Doesn't work on ios11
- Won't work with iOS 11.0
- No longer works with iOS 11
- Please update this to work with iOS 11
- Won't work on new iOS updates
- Can't switch it into fractions on iOS 10
Requested features
13 requests- Allow filling in cut joint length, centerline length, and overall length
- Update author email address
- Update to iOS 11 and later
- Update to be compatible with new IOS updates
- Update to work with the latest version of iPhone
Show 8 moreShow fewer
- Update to work with iOS 11.3
- Update for iOS 11 or higher
- Update to work with iOS 11
- Update to work with iOS 11.0
- Update to work with iOS 11
- Update to work with iOS 11
- Update to work with iOS 11
- Allow entering any parameters, not just specific ones
In-app purchases
Right Angle
- Renews Monthly14 Days trial$2.991 Month
- Renews Yearly1 Month trial$14.991 Year
- Small Tip$2.99
- Medium Tip$4.99
- Segments Calculator$5.99
Show 4 moreShow fewer
- Oblique Triangle Calculator$5.99
- Segment & Oblique Triangle$6.99
- Large Tip$9.99
- Huge Tip$29.99
Easy Offset
No in-app purchases
Questions
Is Right Angle free?
Is Easy Offset free?
Which has better reviews, Right Angle or Easy Offset?
Do Right Angle or Easy Offset have ads?
Which is updated more often, Right Angle or Easy Offset?
Other comparisons
