# Singing Dragon Library vs Papertrell V2

Singing Dragon Library and Papertrell V2 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Singing Dragon Library sells 22 one-off in-app purchases and Papertrell V2 sells 9 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Singing Dragon Library ships an update every 6 months, Papertrell V2 every 9 months. The most recent releases landed on October 17, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Singing Dragon Library | Papertrell V2 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 9 months |
| Size | 96 MB | 92 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hachette UK (Holdings)Limited](https://appshunter.io/developer/361205465) | [Trellisys.net](https://appshunter.io/developer/327320942) |

## 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 (22)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack of 13 Credits | $12.99 | one-time |
| Pack of 15 Credits | $14.99 | one-time |
| Pack of 18 Credits | $17.99 | one-time |
| Pack of 20 Credits | $19.99 | one-time |
| Pack of 22 Credits | $21.99 | one-time |
| Pack of 25 Credits | $24.99 | one-time |
| Pack of 26 Credits | $25.99 | one-time |
| Pack of 28 Credits | $27.95 | one-time |
| Pack of 30 Credits | $29.99 | one-time |
| Pack of 33 Credits | $33.95 | one-time |
| Pack of 34 Credits | $33.99 | one-time |
| Pack of 35 Credits | $34.99 | one-time |
| Pack of 36 Credits | $35.99 | one-time |
| Pack of 38 Credits | $37.99 | one-time |
| Pack of 40 Credits | $39.99 | one-time |
| Pack of 42 Credits | $41.99 | one-time |
| Pack of 46 Credits | $45.99 | 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 |
| Pack of 90 Credits | $89.99 | one-time |
| Pack of 100 Credits | $99.99 | one-time |


### Papertrell V2

[App page](https://appshunter.io/ios/app/papertrell-v2/id6451319528)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack of 1 Credit | $0.99 | one-time |
| Pack of 2 Credits | $1.99 | one-time |
| Pack of 3 Credits | $2.99 | one-time |
| Pack of 4 Credits | $3.99 | one-time |
| Pack of 5 Credits | $4.99 | one-time |
| Pack of 6 Credits | $5.99 | one-time |
| Pack of 7 Credits | $6.99 | one-time |
| Pack of 8 Credits | $7.99 | one-time |
| Pack of 10 Credits | $9.99 | one-time |


## Frequently asked questions

### Is Singing Dragon Library free?

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

### Is Papertrell V2 free?

Papertrell V2 is free to download, with in-app purchases available.

### Do Singing Dragon Library or Papertrell V2 have ads?

Neither Singing Dragon Library nor Papertrell V2 shows ads.

### Which is updated more often, Singing Dragon Library or Papertrell V2?

Singing Dragon Library ships an update every 6 months, and Papertrell V2 every 9 months. Most recently, Singing Dragon Library was updated on October 17, 2026 and Papertrell V2 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.*