# PDF Library eBook Reader vs Orbil

The clearest difference is update cadence: Orbil at every 9 days against PDF Library eBook Reader's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PDF Library eBook Reader sells 1 one-off in-app purchase and Orbil sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

PDF Library eBook Reader ships an update monthly, Orbil every 9 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | PDF Library eBook Reader | Orbil |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (12 ratings)](https://appshunter.io/ios/app/pdf-library-ebook-reader/id6503659712/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 21 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Verbia Systems](https://appshunter.io/developer/1025294134) | [Prometeuz](https://appshunter.io/developer/6799673044) |

## What reviewers say

### PDF Library eBook Reader

[App page](https://appshunter.io/ios/app/pdf-library-ebook-reader/id6503659712)

Effortlessly read, organize, and sync your PDF eBooks across devices. Features include flexible display options, dark mode, auto-save reading progress, and customizable collections. An optional Pro version unlocks advanced organization tools.

**Highlights:** Organize PDF collection, Sync across devices, Flexible display options, Dark mode reading, Auto-save reading progress, Customizable collections (Pro)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Library Pro | $19.99 | one-time |


### Orbil

[App page](https://appshunter.io/ios/app/orbil-reading-tracker/id6799673042)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Orbil Plus | $39.99 | one-time |


## Frequently asked questions

### Is PDF Library eBook Reader free?

PDF Library eBook Reader is free to download, with in-app purchases available.

### Is Orbil free?

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

### Do PDF Library eBook Reader or Orbil have ads?

Neither PDF Library eBook Reader nor Orbil shows ads.

### Which is updated more often, PDF Library eBook Reader or Orbil?

PDF Library eBook Reader ships an update monthly, and Orbil every 9 days. Most recently, PDF Library eBook Reader was updated on October 24, 2026 and Orbil on October 10, 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.*