Right Angle vs HarbourLink InnoHub
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
Read full descriptionHide 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
HarbourLink InnoHub
Read full descriptionHide full description
Unlock a world of digital convenience at your fingertips with HBL app. Your one stop platform to Live, Work, Play at HBL. Key Features: • Enjoy Cardless Access In-app digital access using QR code for access within the development. • Visitor Management Provide your guest with fuss-free access ahead of time by sending a web-link invite for a seamless visitation experience. • Facilities Booking Book facility on-the-go in just a few easy taps. • Notices and Updates Stay connected with the latest news and announcement of the development. Access to everyday convenience with HBL app now!
Screenshots
Verdict
The clearest difference is in-app purchases: HarbourLink InnoHub at none against Right Angle's 9. HarbourLink InnoHub also leads on iOS requirement (16.6 vs 26.0). Right Angle's advantage is update cadence (every 6 days vs every 4 weeks). On price, 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
Both are free to download. Right Angle sells 9 in-app purchases, starting at $2.99 per month. HarbourLink InnoHub asks for nothing beyond the download.
Right Angle ships an update every 6 days, HarbourLink InnoHub every 4 weeks. The most recent releases landed on October 19, 2026 and October 4, 2026 respectively.
| Parameter | Right Angle | HarbourLink InnoHub |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (30 ratings) — better | — |
| Positive reviews | 73.3% of reviews | — |
| Number of ratings | 30 — better | — |
| Update frequency | Every 6 days — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 3 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Jerry Mayers | HABITAP PTE. LTD |
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
HarbourLink InnoHub
Not enough reviews yet to summarise bugs or requests.
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
HarbourLink InnoHub
No in-app purchases
Questions
Is Right Angle free?
Is HarbourLink InnoHub free?
Do Right Angle or HarbourLink InnoHub have ads?
Which is updated more often, Right Angle or HarbourLink InnoHub?
Other comparisons















