# AI Prompt Modifier vs KeyFeed

The clearest difference is in-app purchases: AI Prompt Modifier at none against KeyFeed's 1. AI Prompt Modifier also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. KeyFeed sells 1 one-off in-app purchase. AI Prompt Modifier asks for nothing beyond the download.

## The numbers

| Metric | AI Prompt Modifier | KeyFeed |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 4 MB | 11 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Windmillcode LLC](https://appshunter.io/developer/1755065554) | [德明 杨](https://appshunter.io/developer/1630281265) |

## What reviewers say

### AI Prompt Modifier

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

**Features:** Safari Extension

**In-app purchases:** none


### KeyFeed

[App page](https://appshunter.io/ios/app/keyfeed-rss-keyword-radar/id6801122950)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KeyFeed Pro Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is AI Prompt Modifier free?

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

### Is KeyFeed free?

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

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

Neither AI Prompt Modifier nor KeyFeed shows ads.

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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.*