# Secret Message vs QuickPDF

The clearest difference is in-app purchases: Secret Message at none against QuickPDF's 2. Secret Message also leads on ads (none vs shown). QuickPDF's advantage is update cadence (monthly vs every 8 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. QuickPDF sells 2 in-app purchases, starting at $4.99 per month. Secret Message asks for nothing beyond the download.

Secret Message ships an update every 8 months, QuickPDF monthly. The most recent releases landed on October 10, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Secret Message | QuickPDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Monthly** |
| Size | 42 MB | 69 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pramod Tapaniya](https://appshunter.io/developer/1658474335) | [UNIQUE-EDGE INNOVATIONS LTD.](https://appshunter.io/developer/1896730641) |

## What reviewers say

### Secret Message

[App page](https://appshunter.io/ios/app/secret-message-hide-message/id1669919031)

**Features:** macOS Compatibility

**In-app purchases:** none


### QuickPDF

[App page](https://appshunter.io/ios/app/quickpdf-pdf-tools-and-ai-chat/id6784027939)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| QuickPDF Premium (Monthly) | $4.99 | per month |
| QuickPDF Premium (Yearly) | $29.99 | per year |


## Frequently asked questions

### Is Secret Message free?

Secret Message is free to download, with no in-app purchases.

### Is QuickPDF free?

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

### Do Secret Message or QuickPDF have ads?

QuickPDF shows ads; Secret Message does not.

### Which is updated more often, Secret Message or QuickPDF?

Secret Message ships an update every 8 months, and QuickPDF monthly. Most recently, Secret Message was updated on October 10, 2026 and QuickPDF on September 29, 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.*