iTruss vs OBJ Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iTruss
Calculate structural loads, spans, and truss requirements for construction projects directly from your iPhone. This tool simplifies complex engineering calculations for field use.
- Load calculation
- Span determination
- Truss analysis
- Field use optimization
- Engineering calculations
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Determine load, span or truss needed for your job in the field with this exciting new iPhone® application from XSF. EULA link https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
OBJ Viewer
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Easily open and inspect 3D files directly on your device. Designed for speed and clarity, this 3D file viewer lets you preview models, check geometry, and view parts in clean real-time 3D. Core Features: • Smooth orbit, pan, and zoom controls • Exploded part separation slider • Wireframe and solid mesh rendering modes • Studio lighting and environment presets • Support for .usdz and .obj formats • High-resolution snapshot capture and sharing Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://shotexstudio.com/3d-model-viewer-obj-usdz-dae/
Screenshots
Verdict
The clearest difference is update cadence: OBJ Viewer at every 6 days against iTruss's every 23 months. iTruss's advantage is iOS requirement (11.0 vs 17.6). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
iTruss ships an update every 23 months, OBJ Viewer every 6 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.
| Parameter | iTruss | OBJ Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (15 ratings) — better | — |
| Number of ratings | 15 — better | — |
| Update frequency | Every 23 months | Every 6 days — better |
| Ads | — | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 70 MB | 1 MB |
| Age rating | 4+ | 12+ |
| Developer | Xtreme Structures & Fabrication LLC | Shota Sukhiashvili |
In-app purchases
iTruss
No in-app purchases
OBJ Viewer
No in-app purchases
