# Eternal Knowledge Portal vs Tree

The clearest difference is update cadence: Tree at every 4 weeks against Eternal Knowledge Portal's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Eternal Knowledge Portal sells 1 one-off in-app purchase and Tree sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Eternal Knowledge Portal ships an update every 2 months, Tree every 4 weeks. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Eternal Knowledge Portal | Tree |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Size | 86 MB | 38 MB |
| Requires iOS | **16.4** | 16.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [TagMango Inc](https://appshunter.io/developer/1611765353) | [Hleb Kuznetsov](https://appshunter.io/developer/1656043742) |

## What reviewers say

### Eternal Knowledge Portal

[App page](https://appshunter.io/ios/app/eternal-knowledge-portal/id6738376948)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Knowledge Economy Blueprint | $0.99 | one-time |


### Tree

[App page](https://appshunter.io/ios/app/tree-train-your-brain/id6743909482)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | per month |
| Premium | $19.99 | per year |


## Frequently asked questions

### Is Eternal Knowledge Portal free?

Eternal Knowledge Portal is free to download, with in-app purchases available.

### Is Tree free?

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

### Do Eternal Knowledge Portal or Tree have ads?

Neither Eternal Knowledge Portal nor Tree shows ads.

### Which is updated more often, Eternal Knowledge Portal or Tree?

Eternal Knowledge Portal ships an update every 2 months, and Tree every 4 weeks. Most recently, Eternal Knowledge Portal was updated on October 24, 2026 and Tree on October 19, 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.*