# Notes Book PRO vs Sign PDF Docs

The clearest difference is device support: Notes Book PRO at 3 against Sign PDF Docs's 1. Notes Book PRO also leads on iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Notes Book PRO sells 9 in-app purchases, starting at $0.49 per month and Sign PDF Docs sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Notes Book PRO | Sign PDF Docs |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Size | 15 MB | 21 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dylan Zaoui](https://appshunter.io/developer/1773873798) | [Sevim AYDIN](https://appshunter.io/developer/6804548256) |

## What reviewers say

### 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 |


### Sign PDF Docs

[App page](https://appshunter.io/ios/app/sign-pdf-docs-fastsigner/id6804548254)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FastSign Premium Weekly | $3.99 | per 7 days |
| FastSign Premium Monthly | $6.99 | per month |
| One-Time Clean Export | $1.99 | one-time |


## Frequently asked questions

### Is Notes Book PRO free?

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

### Is Sign PDF Docs free?

Sign PDF Docs is free to download, with in-app purchases available.

### Do Notes Book PRO or Sign PDF Docs have ads?

Neither Notes Book PRO nor Sign PDF Docs 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.*