Rectangle Area Calculator vs STL Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rectangle Area Calculator
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Make rectangle area calculations simple and fast. Instantly solve problems and get clear answers to your geometry questions. Easy to use. Fast answers. Perfect for learning or teaching. Clean, intuitive interface.
STL Viewer
Visualize e inspecione modelos 3D STL em seu dispositivo. Oferece ferramentas avançadas para medição, análise de malha e geração de relatórios PDF. Ideal para engenharia, impressão 3D e revisão técnica.
- Multitouch rotation, pan, and zoom
- Wireframe, X-Ray, and normal orientation modes
- Precise point-to-point measurement
- Interactive cutting plane
- Mesh health diagnostics
- Generate PDF technical reports
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Open your STL file and review the 3D model on iPhone or iPad. STL Viewer brings together model viewing, geometry inspection and technical documentation for 3D printing, prototyping and engineering workflows. FROM FILE TO MODEL • Open binary or ASCII STL files. • Rotate, pan and zoom with multitouch gestures. • Explore technical views and rendering modes. • Review model details away from your workstation. INSPECT WITH PRO Inspect mesh health, open edges, degenerate faces and geometry. Use surface measurements, dimensions, area, volume and section planes. Assign your file's unit: the STL format does not store units. DOCUMENT WITH STUDIO Studio adds technical PDF reports with project information and geometry and mesh summaries, generated on your device. LOCAL PROCESSING Model geometry is processed on your device and is not uploaded to our servers. Practical file limits depend on your device's memory and capabilities. This is a paid app download. Advanced inspection and measurement require Pro; PDF reports require Studio. Subscription features and prices are shown before purchase and can be managed in your Apple account settings. This version's interface is in English. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://softwareideal.com.br
Screenshots
Verdict
The clearest difference is price: Rectangle Area Calculator at Free against STL Viewer's $0.99. STL Viewer's advantage is ads (none vs shown) and chart position (#82 vs unranked). On update cadence, in-app purchases, device support and iOS requirement 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
Rectangle Area Calculator is free to download; STL Viewer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Rectangle Area Calculator ships an update every 32 months, STL Viewer every 22 months. The most recent releases landed on October 16, 2026 and October 22, 2026 respectively.
| Parameter | Rectangle Area Calculator | STL Viewer |
|---|---|---|
| Price | Free — better | $0.99 |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 32 months | Every 22 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | #82 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 16 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Josue Cuginguilua | Felipe Marques de Barros |
In-app purchases
Rectangle Area Calculator
No in-app purchases
STL Viewer
No in-app purchases
Questions
Is Rectangle Area Calculator free?
Is STL Viewer free?
Do Rectangle Area Calculator or STL Viewer have ads?
Which is updated more often, Rectangle Area Calculator or STL Viewer?
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