Right Angle vs Mrmr OSC controller
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
Mrmr OSC controller
Transform your mobile device into a versatile controller for live installations, multimedia performances, and interactive exhibits. Create custom interfaces with a text editor and utilize open standards for seamless integration with VJ/DJ software and other multimedia tools.
- Custom interface creation via text editor
- Multiuser support
- Client peer-to-peer or client-server models
- Open standards (zeroconfig, OSC)
- Dynamic, reconfigurable widgets
- OSC controller for VJ/DJ software
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Mrmr (http://ecumedesjours.com/Mrmr/) is an ongoing research project to develop a standardized set of protocols and syntax conventions to control live installations and multimedia performances via mobile devices. The project was begun by Eric Redlinger, then researcher-in-residence at the Polytechnic Institute of NYU's experimental media center. Mrmr enables you to use ordinary cell phones and tablets as controllers in audio-visual performances, or to participate in interactive museum exhibits, or to use your mobile device in the place of the mouse or trackpad from your full-size computer. It also makes a great, free OSC controller for Max/MSP, VDMX and other VJ/DJ software. Key elements of the Mrmr project are: • create your own interfaces using only a text editor • multiuser by design / client peer-to-peer or client-server models supported • open standards (zeroconfig/bonjour/mdns, OSC) • dynamic interfaces: widgets can be reconfigured 'on the fly'
Screenshots
Verdict
The clearest difference is in-app purchases: Mrmr OSC controller at none against Right Angle's 9. Mrmr OSC controller also leads on iOS requirement (8.0 vs 26.0). Right Angle's advantage is update cadence (every 6 days vs every 2 months) and review sentiment (73% vs 59%). On price, rating, 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. Mrmr OSC controller asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 3.9 for Right Angle against 4.0 for Mrmr OSC controller. That said, the two scores are not equally well evidenced: Right Angle has 30 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 73% of Right Angle's written reviews are positive against 59% of Mrmr OSC controller's.
Right Angle ships an update every 6 days, Mrmr OSC controller every 2 months. The most recent releases landed on October 19, 2026 and October 5, 2026 respectively.
| Parameter | Right Angle | Mrmr OSC controller |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (30 ratings) | 4.0 (5 ratings) — better |
| Positive reviews | 73.3% of reviews — better | 59.1% of reviews |
| Number of ratings | 30 — better | 5 |
| Update frequency | Every 6 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Jerry Mayers | 10base-t Interactive |
Customer experience
Right Angle
Mrmr OSC controller
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
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- Add metric units (millimeters)
- Option to choose metric inputs
- Dark mode option
- Advanced analytics dashboard
Mrmr OSC controller
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
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- Oblique Triangle Calculator$5.99
- Segment & Oblique Triangle$6.99
- Large Tip$9.99
- Huge Tip$29.99
Mrmr OSC controller
No in-app purchases
Questions
Is Right Angle free?
Is Mrmr OSC controller free?
Which has better reviews, Right Angle or Mrmr OSC controller?
Do Right Angle or Mrmr OSC controller have ads?
Which is updated more often, Right Angle or Mrmr OSC controller?
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