# Curio Library vs Book Tracker

The clearest difference is in-app purchases: Curio Library at none against Book Tracker's 2. Curio Library also leads on iOS requirement (11.1 vs 18.2). Book Tracker's advantage is update cadence (monthly vs every 21 months). On price, ads and device support there is nothing between them.

Both are free to download. Book Tracker sells 2 in-app purchases, starting at $4.99 per 7 days. Curio Library asks for nothing beyond the download.

Curio Library ships an update every 21 months, Book Tracker monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Curio Library | Book Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/curio-library/id1356988731/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 21 months | **Monthly** |
| Monetization | Free | — |
| Size | 9 MB | 17 MB |
| Requires iOS | **11.1** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NTDE](https://appshunter.io/developer/1316864128) | [Smart Automation SRL](https://appshunter.io/developer/1822502270) |

## What reviewers say

### Curio Library

[App page](https://appshunter.io/ios/app/curio-library/id1356988731)

Organize and manage your personal book collection. Keep track of all your reading materials in one place, with a simple and intuitive interface. Discover new ways to catalog your library.

**Highlights:** Personal library management, Catalog all book types, Intuitive interface, Track reading materials

**Features:** macOS Compatibility

**In-app purchases:** none


### Book Tracker

[App page](https://appshunter.io/ios/app/book-tracker-readcue/id6776339577)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReadCue Premium Weekly | $4.99 | per 7 days |
| ReadCue Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is Curio Library free?

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

### Is Book Tracker free?

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

### Do Curio Library or Book Tracker have ads?

Neither Curio Library nor Book Tracker shows ads.

### Which is updated more often, Curio Library or Book Tracker?

Curio Library ships an update every 21 months, and Book Tracker monthly. Most recently, Curio Library was updated on October 24, 2026 and Book Tracker on October 25, 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.*