RADii Viewer vs AR vProtractor
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
RADii Viewer
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RADii Viewer is a real time AR/VR viewer for the RADii plugin (radii.info) for Rhino3D/Grasshopper3D (rhino3d.com). RADii is an open design and collaboration platform aimed at designers and architects. RADii Viewer enables you to subscribe and view content published from Rhino3D in real-time as it is being created, anywhere in the world. Content can be retrieved from a cloud server on demand as well as saved locally for future offline use. Subscribable content so far includes meshes, point clouds, curves/polylines, materials, messages, control and other users. You control the scale of the received content, general properties as well as the world it inhabits. The focus of the platform is direct project communication and collaboration for professionals and amateurs.
AR vProtractor
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You can put a virtual protractor using AR technology that can be placed on a desk or the floor. When you launch the app, please move your iPhone left and right to recognize the surrounding space. Touch the screen to locate where you want to place the virtual protractor, then horizontal and vertical protractors will be displayed at the point you selected. You can turn the virtual protractors left or right with your finger on the screens. You can move protractors horizontal position with two fingers scroll, and vertical position by three fingers scroll. The protractors are anchored to the surrounding feature point with an AR Anchor.Β Push "Relocate" button to put new protractors. Push "Grid" button to display horizontal grid to align protractors to edge of room or desk.
Screenshots
Verdict
The clearest difference is update cadence: AR vProtractor at every 4 weeks against RADii Viewer's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
RADii Viewer ships an update every 3 months, AR vProtractor every 4 weeks. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.
| Parameter | RADii Viewer | AR vProtractor |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 4 weeks β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod, Mac β better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 β better |
| Further details β not scored | ||
| Size | 129 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Lee | Kazufumi Suzuki |
In-app purchases
RADii Viewer
No in-app purchases
AR vProtractor
No in-app purchases
Questions
Is RADii Viewer free?
Is AR vProtractor free?
Do RADii Viewer or AR vProtractor have ads?
Which is updated more often, RADii Viewer or AR vProtractor?
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