# AI Helper vs QuickPDF Signer

The clearest difference is ads: AI Helper at none against QuickPDF Signer's shown. AI Helper also leads on update cadence (every 3 weeks vs every 2 months). QuickPDF Signer's advantage is iOS requirement (13.0 vs 18.5). On price, in-app purchases and device support there is nothing between them.

Both are free to download. AI Helper sells 1 in-app purchase, starting at $4.99 per month and QuickPDF Signer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

AI Helper ships an update every 3 weeks, QuickPDF Signer every 2 months. The most recent releases landed on October 25, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | AI Helper | QuickPDF Signer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/quickpdf-signer/id6755832421/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 35 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Volodymyr Sichka](https://appshunter.io/developer/1125187457) | [Nolan Townsend](https://appshunter.io/developer/1506705934) |

## What reviewers say

### AI Helper

[App page](https://appshunter.io/ios/app/ai-helper-chat-bot/id6747587243)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All access - Monthly Plan | $4.99 | per month |


### QuickPDF Signer

[App page](https://appshunter.io/ios/app/quickpdf-signer/id6755832421)

Easily sign and fill PDF documents with your signature, text, and dates. Import PDFs from your device or other apps, save multiple signatures, and export updated documents quickly. Designed for everyday use with a straightforward interface.

**Highlights:** Add signature to PDFs, Fill forms with text and dates, Import PDFs from files/apps, Create and save multiple signatures, Resize and adjust signatures, Export updated PDFs, Clean and simple interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove_ads_lifetime_signer | $1.99 | one-time |


## Frequently asked questions

### Is AI Helper free?

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

### Is QuickPDF Signer free?

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

### Do AI Helper or QuickPDF Signer have ads?

QuickPDF Signer shows ads; AI Helper does not.

### Which is updated more often, AI Helper or QuickPDF Signer?

AI Helper ships an update every 3 weeks, and QuickPDF Signer every 2 months. Most recently, AI Helper was updated on October 25, 2026 and QuickPDF Signer on October 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.*