# Calvert Library vs Blackauthored

The clearest difference is update cadence: Blackauthored at every 4 days against Calvert Library's every 4 months. Blackauthored also leads on chart position (#201 vs unranked). Calvert Library's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Calvert Library ships an update every 4 months, Blackauthored every 4 days. The most recent releases landed on September 26, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Calvert Library | Blackauthored |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (11 ratings)](https://appshunter.io/ios/app/blackauthored-book-tracker/id6795180951/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | — | Free |
| Best chart rank | — | **#201** |
| Size | 46 MB | 54 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Calvert County Public Library](https://appshunter.io/developer/1541354794) | [Blackauthored](https://appshunter.io/developer/6795180953) |

## What reviewers say

### Calvert Library

[App page](https://appshunter.io/ios/app/calvert-library/id1541354792)

**In-app purchases:** none


### Blackauthored

[App page](https://appshunter.io/ios/app/blackauthored-book-tracker/id6795180951)

**Currently charting:** #201 Top Free · Book (US App Store)

Discover and track books by Black authors with this app. Filter by genre, trope, and spice level to find your next read. Organize your reading list, rate books with precision, and connect with other readers.

**Highlights:** Discover books by Black authors, Filter by genre, trope, and spice level, Track reading status (want to read, reading, read,DNF), Explore community-made lists, View author catalogs in order, Rate books with decimal precision, Set reading goals and streaks, Connect with other readers

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

**In-app purchases:** none


## Frequently asked questions

### Is Calvert Library free?

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

### Is Blackauthored free?

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

### Do Calvert Library or Blackauthored have ads?

Neither Calvert Library nor Blackauthored shows ads.

### Which is updated more often, Calvert Library or Blackauthored?

Calvert Library ships an update every 4 months, and Blackauthored every 4 days. Most recently, Calvert Library was updated on September 26, 2026 and Blackauthored on October 2, 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.*