# Notes Book PRO vs Vowlock

The clearest difference is ads: Notes Book PRO at none against Vowlock's shown. Notes Book PRO also leads on iOS requirement (15.0 vs 17.0). Vowlock's advantage is update cadence (every 3 days vs every 5 weeks). On price, in-app purchases and device support 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 Vowlock sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Notes Book PRO ships an update every 5 weeks, Vowlock every 3 days. The most recent releases landed on September 17, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Notes Book PRO | Vowlock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Size | 15 MB | 16 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dylan Zaoui](https://appshunter.io/developer/1773873798) | [Eren Demirkesen](https://appshunter.io/developer/6790159090) |

## 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 |


### Vowlock

[App page](https://appshunter.io/ios/app/vowlock-strict-app-blocker/id6798383339)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $6.99 | per month |
| Plus Annual | $39.99 | per year |
| Plus Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Notes Book PRO free?

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

### Is Vowlock free?

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

### Do Notes Book PRO or Vowlock have ads?

Vowlock shows ads; Notes Book PRO does not.

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

Notes Book PRO ships an update every 5 weeks, and Vowlock every 3 days. Most recently, Notes Book PRO was updated on September 17, 2026 and Vowlock on September 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.*