# Clandestine Passwords vs Notes Book PRO

The clearest difference is update cadence: Clandestine Passwords at daily against Notes Book PRO's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Clandestine Passwords sells 1 one-off in-app purchase and Notes Book PRO sells 9 in-app purchases, starting at $0.49 per month. Whichever you choose, the download price is not the number that matters.

Clandestine Passwords ships an update daily, Notes Book PRO every 5 weeks. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Clandestine Passwords | Notes Book PRO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 5 weeks |
| Size | 5 MB | 15 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Baumann](https://appshunter.io/developer/1633593482) | [Dylan Zaoui](https://appshunter.io/developer/1773873798) |

## What reviewers say

### Clandestine Passwords

[App page](https://appshunter.io/ios/app/clandestine-passwords/id1633593480)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Secrets | $7.99 | one-time |


### Notes Book PRO

[App page](https://appshunter.io/ios/app/notes-book-pro/id6736923325)

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All features for 1 month. | $0.49 | per month |
| All features for 3 months | $0.99 | per 3 months |
| All features for 6 months. | $1.99 | per 6 months |
| Premium access for 1 month | $1.99 | per month |
| All features for 1 year. | $3.99 | per year |
| Premium access for 3 months | $3.99 | per 3 months |
| Premium access for 6 months. | $4.99 | per 6 months |
| Premium access for 12 months | $8.99 | per year |
| All features for life | $3.99 | one-time |


## Frequently asked questions

### Is Clandestine Passwords free?

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

### Is Notes Book PRO free?

Notes Book PRO is free to download, with in-app purchases available.

### Do Clandestine Passwords or Notes Book PRO have ads?

Neither Clandestine Passwords nor Notes Book PRO shows ads.

### Which is updated more often, Clandestine Passwords or Notes Book PRO?

Clandestine Passwords ships an update daily, and Notes Book PRO every 5 weeks. Most recently, Clandestine Passwords was updated on October 16, 2026 and Notes Book PRO on October 4, 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.*