# PDF Secure, Lock PDF password vs Private Note Encrypted

PDF Secure, Lock PDF password and Private Note Encrypted are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. PDF Secure, Lock PDF password sells 3 in-app purchases, starting at $1.99 per 7 days and Private Note Encrypted sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | PDF Secure, Lock PDF password | Private Note Encrypted |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 11 days |
| Size | 4 MB | 52 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Mohamed Oufqir](https://appshunter.io/developer/1750312649) | [ZONESOFT S.R.L.](https://appshunter.io/developer/6780032610) |

## What reviewers say

### PDF Secure, Lock PDF password

[App page](https://appshunter.io/ios/app/pdf-secure-lock-pdf-password/id6739538648)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week | $1.99 | per 7 days |
| Month | $3.99 | per month |
| Year | $29.99 | per year |


### Private Note Encrypted

[App page](https://appshunter.io/ios/app/private-note-encrypted/id6780053523)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| English | $3.99 | per month |


## Frequently asked questions

### Is PDF Secure, Lock PDF password free?

PDF Secure, Lock PDF password is free to download, with in-app purchases available.

### Is Private Note Encrypted free?

Private Note Encrypted is free to download, with in-app purchases available.

### Do PDF Secure, Lock PDF password or Private Note Encrypted have ads?

Neither PDF Secure, Lock PDF password nor Private Note Encrypted shows ads.

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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.*