# NanoPDF vs WatchNotes

The clearest difference is update cadence: WatchNotes at daily against NanoPDF's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NanoPDF ships an update every 6 weeks, WatchNotes daily. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | NanoPDF | WatchNotes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Daily** |
| Size | 6 MB | 5 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Giovanni Outerleys](https://appshunter.io/developer/1557846953) | [Ilia Evseev](https://appshunter.io/developer/6773412481) |

## What reviewers say

### NanoPDF

[App page](https://appshunter.io/ios/app/nanopdf/id6467386184)

**In-app purchases:** none


### WatchNotes

[App page](https://appshunter.io/ios/app/watchnotes-wrist-pdf-reader/id6780066873)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NanoPDF free?

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

### Is WatchNotes free?

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

### Do NanoPDF or WatchNotes have ads?

Neither NanoPDF nor WatchNotes shows ads.

### Which is updated more often, NanoPDF or WatchNotes?

NanoPDF ships an update every 6 weeks, and WatchNotes daily. Most recently, NanoPDF was updated on October 7, 2026 and WatchNotes on October 6, 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.*