# Universal Library vs Tree(3)

The clearest difference is in-app purchases: Universal Library at none against Tree(3)'s 4. Universal Library also leads on ads (none vs shown) and iOS requirement (12.0 vs 18.0). Tree(3)'s advantage is update cadence (every 2 weeks vs every 40 months). On price and device support there is nothing between them.

Both are free to download. Tree(3) sells 4 one-off in-app purchases. Universal Library asks for nothing beyond the download.

Universal Library ships an update every 40 months, Tree(3) every 2 weeks. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Universal Library | Tree(3) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/tree3/id6796529735/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 40 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 180 MB | 33 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Jonathan Millen](https://appshunter.io/developer/1252268308) | [Thicket Studios LLC](https://appshunter.io/developer/1758882054) |

## What reviewers say

### Universal Library

[App page](https://appshunter.io/ios/app/universal-library/id1503995339)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tree(3)

[App page](https://appshunter.io/ios/app/tree3/id6796529735)

This puzzle game challenges you to build sequences of abstract shapes based on a single rule: no earlier shape can be found within a later one. Compete for high scores, solve daily puzzles, and challenge friends in a game inspired by a massive mathematical concept.

**Highlights:** Build unique shape sequences, Solve daily puzzles, Challenge friends, Learn game mechanics, Earn high scores

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Coins | $0.99 | one-time |
| Remove Ads | $3.99 | one-time |
| 550 Coins | $4.99 | one-time |
| 1,200 Coins | $9.99 | one-time |


## Frequently asked questions

### Is Universal Library free?

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

### Is Tree(3) free?

Tree(3) is free to download, with in-app purchases available.

### Do Universal Library or Tree(3) have ads?

Tree(3) shows ads; Universal Library does not.

### Which is updated more often, Universal Library or Tree(3)?

Universal Library ships an update every 40 months, and Tree(3) every 2 weeks. Most recently, Universal Library was updated on November 7, 2026 and Tree(3) on November 10, 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.*