# Sigma Domain vs Web Canvas

The clearest difference is in-app purchases: Web Canvas at none against Sigma Domain's 2. Sigma Domain's advantage is update cadence (every 5 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sigma Domain sells 2 in-app purchases, starting at $5.99 per month. Web Canvas asks for nothing beyond the download.

Sigma Domain ships an update every 5 days, Web Canvas every 2 months. The most recent releases landed on September 24, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Sigma Domain | Web Canvas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/web-canvas-spatial-browser/id6755220973/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 months |
| Monetization | — | Free |
| Size | 60 MB | 63 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Sigma Domain](https://appshunter.io/developer/1876019749) | [Curious Cat Consulting, LLC](https://appshunter.io/developer/1832011899) |

## What reviewers say

### Sigma Domain

[App page](https://appshunter.io/ios/app/sigma-domain/id6751211704)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Monthly Sigma Domain | $5.99 | per month |
| Additional Usage - Sigma Domain | $9.99 | one-time |


### Web Canvas

[App page](https://appshunter.io/ios/app/web-canvas-spatial-browser/id6755220973)

Organize your online research on an infinite canvas. Instead of managing browser tabs, visually connect websites, images, and notes in a single workspace. Pan, zoom, and arrange your findings to understand complex topics.

**Highlights:** Infinite zoomable canvas, Visual organization of websites and notes, Spatial navigation instead of tabs, Connect research items with lines, Save and share research sessions, Full web browsing capabilities

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sigma Domain free?

Sigma Domain is free to download, with in-app purchases available.

### Is Web Canvas free?

Web Canvas is free to download, with no in-app purchases.

### Do Sigma Domain or Web Canvas have ads?

Neither Sigma Domain nor Web Canvas shows ads.

### Which is updated more often, Sigma Domain or Web Canvas?

Sigma Domain ships an update every 5 days, and Web Canvas every 2 months. Most recently, Sigma Domain was updated on September 24, 2026 and Web Canvas on September 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*