Strings vs Viewport 3D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Strings
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A simple app that lets you display any text in large letters across your phone screen. Perfect for concerts, festivals, events, or just for fun! 【Main Features】 - Instantly display your custom text - Adjustable text size - Customize text color and background - Easy and intuitive to use Use it to show support messages at concerts, create meeting signs at airports or stations, or stand out at events. This simple and easy-to-use app is the perfect communication tool for any occasion!
Viewport 3D
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Viewport is a fast, focused 3D viewer built for artists. Open models straight from the Files app on iPhone or iPad — iCloud Drive, Google Drive, Dropbox, OneDrive, Downloads or AirDrop — and inspect them in a clean, professional viewport. No account. No cloud. No clutter. OPEN ALMOST ANYTHING • USD family + Reality load natively: USDZ, USD, USDA, USDC, .reality • OBJ, STL and PLY • FBX, glTF, GLB, DAE and 20+ more formats via an in-app importer • Pick a model and its texture files together to keep materials INSPECT LIKE A PRO • Smooth orbit, pan, pinch-zoom and double-tap to frame • Studio lighting presets + intensity, multiple backgrounds (studio, blueprint, gradient, checker…) • Render channels: shaded, albedo, normals, roughness and UVs • Turntable auto-spin and a reference ground grid • Scene info: bounding box, dimensions, vertex/triangle/material/texture counts — real values, never faked ANIMATION • Plays node/transform animation and skeletal (bone) skinning on supported models • Simple play / pause / loop transport AR • Place supported static models on real surfaces • Real World and Studio lighting modes • Stable placement, flexible scaling and grounding shadows MORE • Capture a screenshot and share it • Recent files with search, sorting, date grouping and thumbnails • Adaptive layouts and multitasking support on iPad PRIVACY FIRST All 3D processing happens on your device. Viewport has no accounts, no tracking, no ads, and never uploads your files. Made by Reimagine Fx. More formats and tools coming.
Screenshots
Verdict
The clearest difference is in-app purchases: Viewport 3D at none against Strings's 2. Viewport 3D also leads on ads (none vs shown). Strings's advantage is iOS requirement (12.0 vs 17.0). On price 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. Strings sells 2 one-off in-app purchases. Viewport 3D asks for nothing beyond the download.
| Parameter | Strings | Viewport 3D |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 2 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 35 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | kota tada | Amar Shinde |
In-app purchases
Strings
- Premium$4.99
- Treat to Lunch$14.99
Viewport 3D
No in-app purchases









