# AI Prompt Modifier vs Merdot AI

The clearest difference is in-app purchases: AI Prompt Modifier at none against Merdot AI's 10. AI Prompt Modifier also leads on device support (4 vs 2). Merdot AI's advantage is update cadence (every 2 weeks vs monthly). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Merdot AI sells 10 in-app purchases, starting at $2.99 per month. AI Prompt Modifier asks for nothing beyond the download.

AI Prompt Modifier ships an update monthly, Merdot AI every 2 weeks. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | AI Prompt Modifier | Merdot AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 4 MB | 99 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Windmillcode LLC](https://appshunter.io/developer/1755065554) | [Merdot](https://appshunter.io/developer/6794478565) |

## What reviewers say

### AI Prompt Modifier

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

**Features:** Safari Extension

**In-app purchases:** none


### Merdot AI

[App page](https://appshunter.io/ios/app/merdot-ai/id6794478563)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lite | $2.99 | per month |
| Basic | $7.99 | per month |
| Plus | $14.99 | per month |
| Lite | $29.99 | per year |
| Pro | $29.99 | per month |
| Pro Max | $49.99 | per month |
| Basic | $89.99 | per year |
| Plus | $149.99 | per year |
| Pro | $299.99 | per year |
| Pro Max | $499.99 | per year |


## Frequently asked questions

### Is AI Prompt Modifier free?

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

### Is Merdot AI free?

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

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

Neither AI Prompt Modifier nor Merdot AI shows ads.

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

AI Prompt Modifier ships an update monthly, and Merdot AI every 2 weeks. Most recently, AI Prompt Modifier was updated on November 8, 2026 and Merdot AI on November 6, 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.*