# Imaginarium vs Stable Diffusion AI 3.5 Pro

The clearest difference is update cadence: Stable Diffusion AI 3.5 Pro at fortnightly against Imaginarium's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Imaginarium sells 2 one-off in-app purchases and Stable Diffusion AI 3.5 Pro sells 3 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Imaginarium ships an update monthly, Stable Diffusion AI 3.5 Pro fortnightly. The most recent releases landed on August 8, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Imaginarium | Stable Diffusion AI 3.5 Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Size | 49 MB | 33 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [LukyLab](https://appshunter.io/developer/1698729177) | [Glayzer LLC](https://appshunter.io/developer/1775914442) |

## What reviewers say

### Imaginarium

[App page](https://appshunter.io/ios/app/imaginarium-image-generator/id6739706784)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Credit Package | $4.99 | one-time |
| Premium Credit Package | $9.99 | one-time |


### Stable Diffusion AI 3.5 Pro

[App page](https://appshunter.io/ios/app/stable-diffusion-ai-35-pro/id6796444073)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro Access | $7.99 | per 7 days |
| Monthly Pro Access | $19.99 | per month |
| Yearly Pro Access | $59.99 | per year |


## Frequently asked questions

### Is Imaginarium free?

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

### Is Stable Diffusion AI 3.5 Pro free?

Stable Diffusion AI 3.5 Pro is free to download, with in-app purchases available.

### Do Imaginarium or Stable Diffusion AI 3.5 Pro have ads?

Neither Imaginarium nor Stable Diffusion AI 3.5 Pro shows ads.

### Which is updated more often, Imaginarium or Stable Diffusion AI 3.5 Pro?

Imaginarium ships an update monthly, and Stable Diffusion AI 3.5 Pro fortnightly. Most recently, Imaginarium was updated on August 8, 2026 and Stable Diffusion AI 3.5 Pro on September 18, 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.*