# Plain AI vs PrivateSign

The clearest difference is in-app purchases: Plain AI at none against PrivateSign's 1. Plain AI also leads on ads (none vs shown) and iOS requirement (17.0 vs 26.2). On price and device support there is nothing between them.

Both are free to download. PrivateSign sells 1 in-app purchase, starting at $1.99 per month. Plain AI asks for nothing beyond the download.

## The numbers

| Metric | Plain AI | PrivateSign |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 2 months |
| Size | 16 MB | 19 MB |
| Requires iOS | **17.0** | 26.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Jarle Hansen](https://appshunter.io/developer/563222855) | [RECRE8BOX](https://appshunter.io/developer/1815455727) |

## What reviewers say

### Plain AI

[App page](https://appshunter.io/ios/app/plain-ai/id6753973258)

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

**In-app purchases:** none


### PrivateSign

[App page](https://appshunter.io/ios/app/privatesign-sign-pdf/id6762112687)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PrivateSign Pro Monthly | $1.99 | per month |


## Frequently asked questions

### Is Plain AI free?

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

### Is PrivateSign free?

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

### Do Plain AI or PrivateSign have ads?

PrivateSign shows ads; Plain AI does not.

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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.*