# scrolly vs Shelfly

The clearest difference is price: scrolly at Free against Shelfly's $0.99. scrolly also leads on update cadence (weekly vs every 4 months). Shelfly's advantage is chart position (#75 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

scrolly is free to download; Shelfly costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

scrolly ships an update weekly, Shelfly every 4 months. The most recent releases landed on October 21, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | scrolly | Shelfly |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.7 (20 ratings)](https://appshunter.io/ios/app/scrolly-cute-pdf-ebook-reader/id6738710724/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 months |
| Monetization | Free | — |
| Best chart rank | — | **#75** |
| Size | 9 MB | 32 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [totally important LLC](https://appshunter.io/developer/1759244146) | [Zeynep Beyza INCIK](https://appshunter.io/developer/1878351833) |

## What reviewers say

### scrolly

[App page](https://appshunter.io/ios/app/scrolly-cute-pdf-ebook-reader/id6738710724)

Transform your PDF reading with a delightful experience. Customize text size and themes, save your progress with bookmarks, and enjoy a unique vertical scrolling mode. Perfect for books, papers, articles, and textbooks.

**Highlights:** Customizable text size, Theme selection, Bookmark saving, Vertical snap-to-scroll, Read books, papers, articles, textbooks

**Features:** macOS Compatibility

**In-app purchases:** none


### Shelfly

[App page](https://appshunter.io/ios/app/shelfly-cozy-reading-tracker/id6759379795)

**Currently charting:** #75 Top Paid · Book (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is scrolly free?

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

### Is Shelfly free?

Shelfly costs $0.99, with no in-app purchases.

### Do scrolly or Shelfly have ads?

Neither scrolly nor Shelfly shows ads.

### Which is updated more often, scrolly or Shelfly?

scrolly ships an update weekly, and Shelfly every 4 months. Most recently, scrolly was updated on October 21, 2026 and Shelfly on October 31, 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.*