# Singing Dragon Library vs Calvert Library

The clearest difference is in-app purchases: Calvert Library at none against Singing Dragon Library's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Singing Dragon Library sells 10 one-off in-app purchases. Calvert Library asks for nothing beyond the download.

Singing Dragon Library ships an update every 6 months, Calvert Library every 4 months. The most recent releases landed on November 13, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Singing Dragon Library | Calvert Library |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Size | 96 MB | 46 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hachette UK (Holdings)Limited](https://appshunter.io/developer/361205465) | [Calvert County Public Library](https://appshunter.io/developer/1541354794) |

## What reviewers say

### Singing Dragon Library

[App page](https://appshunter.io/ios/app/singing-dragon-library/id1488117314)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack of 15 Credits | $14.99 | one-time |
| Pack of 22 Credits | $21.99 | one-time |
| Pack of 28 Credits | $27.95 | one-time |
| Pack of 33 Credits | $33.95 | one-time |
| Pack of 34 Credits | $33.99 | one-time |
| Pack of 38 Credits | $37.99 | one-time |
| Pack of 42 Credits | $41.99 | one-time |
| Pack of 50 Credits | $49.99 | one-time |
| Pack of 55 Credits | $54.99 | one-time |
| Pack of 60 Credits | $59.99 | one-time |


### Calvert Library

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

**In-app purchases:** none


## Frequently asked questions

### Is Singing Dragon Library free?

Singing Dragon Library is free to download, with in-app purchases available.

### Is Calvert Library free?

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

### Do Singing Dragon Library or Calvert Library have ads?

Neither Singing Dragon Library nor Calvert Library shows ads.

### Which is updated more often, Singing Dragon Library or Calvert Library?

Singing Dragon Library ships an update every 6 months, and Calvert Library every 4 months. Most recently, Singing Dragon Library was updated on November 13, 2026 and Calvert Library on November 3, 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.*