# Three The App vs Auto Scroll PDF

The clearest difference is in-app purchases: Three The App at none against Auto Scroll PDF's 3. Three The App also leads on iOS requirement (13.0 vs 15.6). Auto Scroll PDF's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Auto Scroll PDF sells 3 in-app purchases, starting at $1.49 per month. Three The App asks for nothing beyond the download.

Three The App ships an update fortnightly, Auto Scroll PDF every 10 days. The most recent releases landed on September 6, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Three The App | Auto Scroll PDF |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | — | Paid |
| Size | 40 MB | 39 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Minjie Lee](https://appshunter.io/developer/1838719734) | [Seiya.k](https://appshunter.io/developer/383021944) |

## What reviewers say

### Three The App

[App page](https://appshunter.io/ios/app/three-the-app/id6752298145)

**Features:** macOS Compatibility

**In-app purchases:** none


### Auto Scroll PDF

[App page](https://appshunter.io/ios/app/auto-scroll-pdf/id6752554086)

This app automatically scrolls through your PDF documents, allowing for a hands-free reading experience. It's ideal for following recipes, studying, or presenting without needing to manually turn pages.

**Highlights:** Automatic scrolling, Adjustable scroll speed, Page-by-page mode, Bookmarks, Dark mode, Full screen mode

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $1.49 | per month |
| Premium Yearly | $6.99 | per year |
| Premium Lifetime | $12.99 | one-time |


## Frequently asked questions

### Is Three The App free?

Three The App is free to download, with no in-app purchases.

### Is Auto Scroll PDF free?

Auto Scroll PDF is free to download, with in-app purchases available.

### Do Three The App or Auto Scroll PDF have ads?

Three The App shows ads; Auto Scroll PDF does not.

### Which is updated more often, Three The App or Auto Scroll PDF?

Three The App ships an update fortnightly, and Auto Scroll PDF every 10 days. Most recently, Three The App was updated on September 6, 2026 and Auto Scroll PDF on September 21, 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.*