# Histopia vs AI Prompt Modifier

The clearest difference is ads: AI Prompt Modifier at none against Histopia's shown. AI Prompt Modifier also leads on update cadence (monthly vs every 6 months) and device support (4 vs 2). Histopia's advantage is iOS requirement (12.4 vs 15.0). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Histopia ships an update every 6 months, AI Prompt Modifier monthly. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Histopia | AI Prompt Modifier |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Monthly** |
| Size | 54 MB | 4 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 9+ | 4+ |
| Developer | [Soysal Tan](https://appshunter.io/developer/1686126069) | [Windmillcode LLC](https://appshunter.io/developer/1755065554) |

## What reviewers say

### Histopia

[App page](https://appshunter.io/ios/app/histopia-chat/id6449364875)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI Prompt Modifier

[App page](https://appshunter.io/ios/app/ai-prompt-modifier/id6736705362)

**Features:** Safari Extension

**In-app purchases:** none


## Frequently asked questions

### Is Histopia free?

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

### Is AI Prompt Modifier free?

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

### Do Histopia or AI Prompt Modifier have ads?

Histopia shows ads; AI Prompt Modifier does not.

### Which is updated more often, Histopia or AI Prompt Modifier?

Histopia ships an update every 6 months, and AI Prompt Modifier monthly. Most recently, Histopia was updated on November 7, 2026 and AI Prompt Modifier on November 8, 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.*