# Curio Library vs Volumes

The clearest difference is update cadence: Volumes at every 5 days against Curio Library's every 21 months. Curio Library's advantage is monetization model (free vs ad-supported) and iOS requirement (11.1 vs 26.0). 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.

Curio Library ships an update every 21 months, Volumes every 5 days. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Curio Library | Volumes |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 5 days** |
| Monetization | **Free** | Ad-supported |
| Size | 9 MB | 7 MB |
| Requires iOS | **11.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NTDE](https://appshunter.io/developer/1316864128) | [Jacob Ruiz](https://appshunter.io/developer/1353756539) |

## 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


### Volumes

[App page](https://appshunter.io/ios/app/volumes-book-tracker/id6773989264)

This app helps you track, rate, and reflect on the books you read, building a personal library. It offers personalized reading recommendations based on your history and can import existing reading lists. Discover new titles with a comprehensive book catalog and keep your reading life backed up.

**Highlights:** Track books read, Rate and reflect on books, Personalized reading recommendations, Import existing reading lists, Comprehensive book catalog, iCloud backup

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

**In-app purchases:** none


## Frequently asked questions

### Is Curio Library free?

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

### Is Volumes free?

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

### Do Curio Library or Volumes have ads?

Neither Curio Library nor Volumes shows ads.

### Which is updated more often, Curio Library or Volumes?

Curio Library ships an update every 21 months, and Volumes every 5 days. Most recently, Curio Library was updated on November 2, 2026 and Volumes on October 28, 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.*