# Bibliography vs Echo Books

The clearest difference is price: Echo Books at Free against Bibliography's $0.99. Echo Books also leads on update cadence (every 5 days vs every 15 months). Bibliography's advantage is iOS requirement (14.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Echo Books is free to download; Bibliography costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bibliography ships an update every 15 months, Echo Books every 5 days. Both last shipped on October 12, 2026.

## The numbers

| Metric | Bibliography | Echo Books |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/bibliography/id1329347018/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 5 days** |
| Monetization | Paid | — |
| Size | 24 MB | 7 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Valerii Dubovoi](https://appshunter.io/developer/1329347017) | [Azret Shogenov](https://appshunter.io/developer/1891747096) |

## What reviewers say

### Bibliography

[App page](https://appshunter.io/ios/app/bibliography/id1329347018)

Manage your personal book collection with this app. Organize your library, track books you own, want to buy, or have lent out, and group series for easy reading order. It helps you catalog books, add unreleased titles, and rate your reads.

**Highlights:** Organize personal book catalog, Group books by series, Track book status (owned, lent, to buy), Add unreleased books, Rate and genre books, Sync across devices via iCloud

**Features:** macOS Compatibility

**In-app purchases:** none


### Echo Books

[App page](https://appshunter.io/ios/app/echo-books/id6804252188)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bibliography free?

Bibliography costs $0.99, with no in-app purchases.

### Is Echo Books free?

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

### Do Bibliography or Echo Books have ads?

Neither Bibliography nor Echo Books shows ads.

### Which is updated more often, Bibliography or Echo Books?

Bibliography ships an update every 15 months, and Echo Books every 5 days. Most recently, Bibliography was updated on October 12, 2026 and Echo Books on October 12, 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.*