# Spike Studio vs Stable Diffusion

The clearest difference is rating: Stable Diffusion at 4.4 against Spike Studio's 3.1. Stable Diffusion also leads on ratings volume (41 vs 11). Spike Studio's advantage is in-app purchases (none vs 2) and review sentiment (71% vs 60%). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Stable Diffusion sells 2 in-app purchases, starting at $6.99 per 7 days. Spike Studio asks for nothing beyond the download.

Stable Diffusion holds the better App Store score, 4.4 against 3.1. Both are backed by a comparable volume of ratings — 11 and 41 respectively. Written reviews complicate that: 71% of Spike Studio's written reviews are positive against 60% of Stable Diffusion's, so the app with the better star average is not the one people write more warmly about.

Spike Studio ships an update every 8 days, Stable Diffusion fortnightly. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Spike Studio | Stable Diffusion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (11 ratings)](https://appshunter.io/ios/app/spike-studio/id6749781844/reviews) | **[4.4 (41 ratings)](https://appshunter.io/ios/app/stable-diffusion-artrix/id6753811473/reviews)** |
| Number of ratings | 11 | **41** |
| Positive reviews | **71.4% of reviews** | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Fortnightly |
| Monetization | **Free** | Freemium |
| Size | 118 MB | 106 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Jan Stellmann](https://appshunter.io/developer/1832066618) | [RapidNova](https://appshunter.io/developer/1826052446) |

## What reviewers say

### Spike Studio

[App page](https://appshunter.io/ios/app/spike-studio/id6749781844)

Run powerful AI models locally on your device without cloud dependence. Enjoy private, fast responses and full control over your AI experience. Ideal for developers and AI enthusiasts seeking unlimited model usage and zero tracking.

**Highlights:** Run AI models locally, No cloud dependence, Private data processing, Zero cloud costs, Unlimited model usage, Instant responses

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Stable Diffusion

[App page](https://appshunter.io/ios/app/stable-diffusion-artrix/id6753811473)

Transform your imagination into stunning artwork with advanced AI. Describe your vision or upload a reference image to generate unique art in seconds. Explore niche styles and create with precision control.

**Highlights:** Stable Diffusion Engine, Image-to-Image transformations, Niche art styles, Multiple aspect ratios, Community gallery, Fast processing

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $6.99 | per 7 days |
| Yearly Premium Access | $39.99 | per year |


## Frequently asked questions

### Is Spike Studio free?

Spike Studio is free to download, with no in-app purchases.

### Is Stable Diffusion free?

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

### Which has better reviews, Spike Studio or Stable Diffusion?

Stable Diffusion is rated higher. Spike Studio averages 3.1 out of 5 from 11 ratings, while Stable Diffusion averages 4.4 from 41 ratings.

### Do Spike Studio or Stable Diffusion have ads?

Neither Spike Studio nor Stable Diffusion shows ads.

### Which is updated more often, Spike Studio or Stable Diffusion?

Spike Studio ships an update every 8 days, and Stable Diffusion fortnightly. Most recently, Spike Studio was updated on October 6, 2026 and Stable Diffusion on October 1, 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.*