# book vs Lectio Markdown / PDF Reader

The clearest difference is update cadence: Lectio Markdown / PDF Reader at every 2 days against book's every 8 months. book's advantage is iOS requirement (9.0 vs 27.0). 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.

book ships an update every 8 months, Lectio Markdown / PDF Reader every 2 days. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | book | Lectio Markdown / PDF Reader |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 18 MB | 20 MB |
| Requires iOS | **9.0** | 27.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Sharp Corporation](https://appshunter.io/developer/454644836) | [caps-rock](https://appshunter.io/developer/307492617) |

## What reviewers say

### book

[App page](https://appshunter.io/ios/app/book-in-the-box/id588963852)

This application allows users to view e-book content downloaded from compatible e-book sites. It offers a bookshelf and viewer for a seamless reading experience. Users can manage their account information and registered devices.

**Highlights:** View downloaded e-book content, Bookshelf and viewer interface, Account management, Device registration/deregistration, Improved display and usability

**Features:** Vision Pro support

**In-app purchases:** none


### Lectio Markdown / PDF Reader

[App page](https://appshunter.io/ios/app/lectio-markdown-pdf-reader/id1593029619)

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

**In-app purchases:** none


## Frequently asked questions

### Is book free?

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

### Is Lectio Markdown / PDF Reader free?

Lectio Markdown / PDF Reader is free to download, with no in-app purchases.

### Do book or Lectio Markdown / PDF Reader have ads?

Neither book nor Lectio Markdown / PDF Reader shows ads.

### Which is updated more often, book or Lectio Markdown / PDF Reader?

book ships an update every 8 months, and Lectio Markdown / PDF Reader every 2 days. Most recently, book was updated on October 10, 2026 and Lectio Markdown / PDF Reader on October 24, 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.*