# Curio Library vs Biblionerd

The clearest difference is update cadence: Biblionerd at every 6 weeks against Curio Library's every 21 months. Curio Library's advantage is iOS requirement (11.1 vs 15.1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Curio Library against 5.0 for Biblionerd. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Curio Library ships an update every 21 months, Biblionerd every 6 weeks. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Curio Library | Biblionerd |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/curio-library/id1356988731/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/biblionerd-book-tracking-app/id6744877938/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 9 MB | 36 MB |
| Requires iOS | **11.1** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [NTDE](https://appshunter.io/developer/1316864128) | [Cileto SA](https://appshunter.io/developer/1788528080) |

## 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


### Biblionerd

[App page](https://appshunter.io/ios/app/biblionerd-book-tracking-app/id6744877938)

Organize and track your reading with this app. Discover trending books, manage your personal library, and update reading statuses. Features a simple interface for building your reading journey.

**Highlights:** Organize reading activity, Track reading progress, Explore trending books, Search books by title/author, Manage personal library, Add books to lists, Update reading status

**In-app purchases:** none


## Frequently asked questions

### Is Curio Library free?

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

### Is Biblionerd free?

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

### Which has better reviews, Curio Library or Biblionerd?

Curio Library and Biblionerd are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Curio Library or Biblionerd have ads?

Neither Curio Library nor Biblionerd shows ads.

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

Curio Library ships an update every 21 months, and Biblionerd every 6 weeks. Most recently, Curio Library was updated on November 2, 2026 and Biblionerd on October 30, 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.*