# Comfyui AI vs Stable Diffusion

The clearest difference is in-app purchases: Comfyui AI at none against Stable Diffusion's 3. Stable Diffusion's advantage is update cadence (weekly vs every 3 weeks). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Stable Diffusion sells 3 in-app purchases, starting at $5.99 per 7 days. Comfyui AI asks for nothing beyond the download.

Comfyui AI ships an update every 3 weeks, Stable Diffusion weekly. The most recent releases landed on September 29, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Comfyui AI | Stable Diffusion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (3 ratings)](https://appshunter.io/ios/app/comfyui-ai-image-generator/id6744534964/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 16.7% of reviews | **23.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 86 MB | 55 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Henrik Hovhannisyan](https://appshunter.io/developer/1786771822) | [Onur Kaplan](https://appshunter.io/developer/1803971531) |

## What reviewers say

### Comfyui AI

[App page](https://appshunter.io/ios/app/comfyui-ai-image-generator/id6744534964)

Generate AI-powered images from text descriptions. Choose from various art styles, customize prompts with advanced controls, and get instant previews. An intuitive interface makes creating realistic portraits, fantasy art, and more accessible for all skill levels.

**Highlights:** AI Art Generator, Multiple Art Styles, Prompt Customization, Aspect Ratio Control, Advanced Control Options, Smart Prompt Assistant, Instant Preview & Regeneration

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

**In-app purchases:** none


### Stable Diffusion

[App page](https://appshunter.io/ios/app/stable-diffusion-ai-generator/id6757918876)

Generate unique images from text prompts using AI. Create anime art, realistic photos, digital art, and more for social media, creative projects, or design materials. Offers unlimited access and 4K generation through in-app purchases.

**Highlights:** AI image generation from text, Multiple art styles (anime, realistic, digital), Profile icon and avatar creation, Design material generation, Text to image conversion, 4K image generation (premium)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $5.99 | per 7 days |
| Yearly Plan | $34.99 | per year |
| Lifetime Premium | $99.99 | one-time |


## Frequently asked questions

### Is Comfyui AI free?

Comfyui AI is free to download, with no in-app purchases.

### Is Stable Diffusion free?

Stable Diffusion is free to download, with in-app purchases available.

### Do Comfyui AI or Stable Diffusion have ads?

Neither Comfyui AI nor Stable Diffusion shows ads.

### Which is updated more often, Comfyui AI or Stable Diffusion?

Comfyui AI ships an update every 3 weeks, and Stable Diffusion weekly. Most recently, Comfyui AI was updated on September 29, 2026 and Stable Diffusion on October 3, 2026.

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