# PDF Convert vs SecureKey

The clearest difference is in-app purchases: PDF Convert at none against SecureKey's 1. PDF Convert also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. SecureKey sells 1 in-app purchase, starting at $2.99 per 7 days. PDF Convert asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 5, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | PDF Convert | SecureKey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 32 MB | 20 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mehmet Taha Kocal](https://appshunter.io/developer/1760223620) | [Nhien Tran Thanh](https://appshunter.io/developer/1778200876) |

## What reviewers say

### PDF Convert

[App page](https://appshunter.io/ios/app/pdf-convert-image-to-pdf/id6756984463)

**Features:** macOS Compatibility

**In-app purchases:** none


### SecureKey

[App page](https://appshunter.io/ios/app/securekey-2fa-auth/id6759246064)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Offers | $2.99 | per 7 days |


## Frequently asked questions

### Is PDF Convert free?

PDF Convert is free to download, with no in-app purchases.

### Is SecureKey free?

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

### Do PDF Convert or SecureKey have ads?

SecureKey shows ads; PDF Convert does not.

### Which is updated more often, PDF Convert or SecureKey?

PDF Convert ships an update every 2 weeks, and SecureKey every 2 weeks. Most recently, PDF Convert was updated on October 5, 2026 and SecureKey on October 11, 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.*