# What? vs MCP Agent

The clearest difference is iOS requirement: What? at 18.6 against MCP Agent's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. What? sells 14 in-app purchases, starting at $1.99 per month and MCP Agent sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 11, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | What? | MCP Agent |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 7 MB | 9 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sylvain Lafrance](https://appshunter.io/developer/1197090441) | [Roberto Moreno](https://appshunter.io/developer/1863456465) |

## What reviewers say

### What?

[App page](https://appshunter.io/ios/app/what-ai-rewriter/id6769452050)

**Features:** macOS Compatibility

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| What - BYOK Subscription Monthly | $1.99 | per month |
| What - Subscription Monthly | $7.99 | per month |
| What - BYOK Subscription Yearly | $14.99 | per year |
| What - Subscription Yearly | $49.99 | per year |
| What - Funny Pack | $3.99 | one-time |
| What - Dating Pack | $4.99 | one-time |
| What - Recovery Pack | $4.99 | one-time |
| What - Comedy Pack | $4.99 | one-time |
| What - Email Pack | $5.99 | one-time |
| What - Student Pack | $5.99 | one-time |
| What - International Pack | $5.99 | one-time |
| What - Coach Pack | $5.99 | one-time |
| What - Social Pack | $6.99 | one-time |
| What - Marketer Pack | $9.99 | one-time |


### MCP Agent

[App page](https://appshunter.io/ios/app/mcp-agent/id6784016652)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MCP Pro (Monthly) | $2.99 | per month |
| MCP Pro (Yearly) | $19.99 | per year |


## Frequently asked questions

### Is What? free?

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

### Is MCP Agent free?

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

### Do What? or MCP Agent have ads?

Neither What? nor MCP Agent shows ads.

### Which is updated more often, What? or MCP Agent?

What? ships an update every 3 weeks, and MCP Agent every 3 weeks. Most recently, What? was updated on October 11, 2026 and MCP Agent on October 28, 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.*