Viewport 3D vs Stable Diffusion
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
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 β iCloud Drive, Google Drive, Dropbox, OneDrive, Downloads or AirDrop β and inspect them in a clean, professional viewport. No account. No cloud. No clutter. OPEN ALMOST ANYTHING β’ USD family + Reality load natively: USDZ, USD, USDA, USDC, .reality β’ OBJ, STL and PLY β’ FBX, glTF, GLB, DAE and 20+ more formats via an in-app importer β’ Pick a model and its texture files together to keep materials INSPECT LIKE A PRO β’ Smooth orbit, pan, pinch-zoom and double-tap to frame β’ Studio lighting presets + intensity, multiple backgrounds (studio, blueprint, gradient, checkerβ¦) β’ Render channels: shaded, albedo, normals, roughness and UVs β’ Turntable auto-spin and a reference ground grid β’ Scene info: bounding box, dimensions, vertex/triangle/material/texture counts β real values, never faked ANIMATION β’ Plays node/transform animation and skeletal (bone) skinning on supported models β’ Simple play / pause / loop transport AR β’ Place supported static models on real surfaces β’ Real World and Studio lighting modes β’ Stable placement, flexible scaling and grounding shadows MORE β’ Capture a screenshot and share it β’ Recent files with search, sorting, date grouping and thumbnails β’ 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.
Stable Diffusion
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Stable Diffusion: AI 3D creator turns an idea or one source image into a usable 3D asset. Create from text in any supported language, or upload a clear image of an object or character. Choose an optional visual style, generation quality, and output profile while seeing the exact credit cost before you begin. Built for real workflows: β’ Text to 3D and image to 3D β’ Optional AI-created source image when you do not have one β’ Optional styles that guide appearance without replacing the subject β’ Quality choices shown without technical provider names β’ Local model library with preview, share, re-download, and delete β’ Exports for web, Apple AR, games, 3D editing, and 3D printing β’ Transparent credits, fair-use limits, and automatic refunds for confirmed failures No account is required. Glayzer Studio does not keep a copy of submitted photos or store model files on its servers. Prompts and optional source images are securely sent to AI providers only to perform the generation. StoreKit handles purchases, and the app does not use advertising trackers. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel in your Apple Account subscription settings. Weekly, monthly, and annual plans include recurring credits. Active members can purchase optional extra credit packs; purchased extra credits do not expire and remain usable after membership ends. Stable Diffusion AI 3D Creator & AI Photo Creator Results from generative AI can vary. You are responsible for content you submit and for confirming that an output is suitable for your intended use. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Viewport 3D at none against Stable Diffusion's 5. Stable Diffusion's advantage is update cadence (every 6 days vs every 2 weeks). On price, ads, device support and iOS requirement 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. Stable Diffusion sells 5 in-app purchases, starting at $5.99 per 7 days. Viewport 3D asks for nothing beyond the download.
Viewport 3D ships an update every 2 weeks, Stable Diffusion every 6 days. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.
| Parameter | Viewport 3D | Stable Diffusion |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 6 days β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad β better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details β not scored | ||
| Size | 47 MB | 15 MB |
| Age rating | 4+ | 9+ |
| Developer | Amar Shinde | Glayzer LLC |
In-app purchases
Viewport 3D
No in-app purchases
Stable Diffusion
- 3D Studio Weekly$5.997 Days
- 3D Studio Annual$299.991 Year
- 100 Credits$4.99
- 300 Credits$14.99
- 800 Credits$39.99
Questions
Is Viewport 3D free?
Is Stable Diffusion free?
Do Viewport 3D or Stable Diffusion have ads?
Which is updated more often, Viewport 3D or Stable Diffusion?
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