# PDF AI Reader vs YNotes

The clearest difference is price: YNotes at Free against PDF AI Reader's $0.99. YNotes also leads on update cadence (every 2 days vs every 5 days). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

YNotes is free to download; PDF AI Reader costs $0.99 up front. PDF AI Reader sells 3 in-app purchases, starting at $1.99 per 7 days and YNotes sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

PDF AI Reader ships an update every 5 days, YNotes every 2 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | PDF AI Reader | YNotes |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-ai-reader/id6760606355/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Size | 836 MB | 24 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [勋才 王](https://appshunter.io/developer/1492122934) | [佳辉 瞿](https://appshunter.io/developer/1886015317) |

## What reviewers say

### PDF AI Reader

[App page](https://appshunter.io/ios/app/pdf-ai-reader/id6760606355)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly VIP | $1.99 | per 7 days |
| Monthly VIP | $5.99 | per month |
| Yearly VIP | $59.99 | per year |


### YNotes

[App page](https://appshunter.io/ios/app/ynotes-ai-notes-pdf-study/id6760791622)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro+ Monthly | $9.99 | per month |
| Pro Yearly | $29.99 | per year |
| Pro+ Yearly | $79.99 | per year |


## Frequently asked questions

### Is PDF AI Reader free?

PDF AI Reader costs $0.99, and also offers in-app purchases.

### Is YNotes free?

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

### Do PDF AI Reader or YNotes have ads?

Neither PDF AI Reader nor YNotes shows ads.

### Which is updated more often, PDF AI Reader or YNotes?

PDF AI Reader ships an update every 5 days, and YNotes every 2 days. Most recently, PDF AI Reader was updated on November 7, 2026 and YNotes on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*