# The World Tree App vs ECO AI Assistant

The clearest difference is rating: ECO AI Assistant at 5.0 against The World Tree App's 2.0. ECO AI Assistant also leads on update cadence (every 2 weeks vs every 14 months). The World Tree App's advantage is ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

ECO AI Assistant holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

The World Tree App ships an update every 14 months, ECO AI Assistant every 2 weeks. The most recent releases landed on October 16, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | The World Tree App | ECO AI Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/the-world-tree-app/id1603319087/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/eco-ai-assistant/id6743633751/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 2 MB | 7 MB |
| Requires iOS | **14.5** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jeff Santos](https://appshunter.io/developer/1603319089) | [Mykyta Popov](https://appshunter.io/developer/1805350272) |

## What reviewers say

### The World Tree App

[App page](https://appshunter.io/ios/app/the-world-tree-app/id1603319087)

This app helps writers organize creative ideas into a structured hierarchy. Categorize elements like characters, themes, and plot points with keywords for easy retrieval. Quickly capture and access your thoughts for seamless integration into your writing projects.

**Highlights:** Hierarchical idea organization, Categorize characters, themes, plot, Keyword-based storage and retrieval, Quick idea jotting, Explore tool for printing ideas

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

**In-app purchases:** none


### ECO AI Assistant

[App page](https://appshunter.io/ios/app/eco-ai-assistant/id6743633751)

Analyze environmental data with AI. Upload photos or text to identify hazards like asbestos, verify eco-labels, classify waste, and detect pollution. Generate sustainability reports and calculate carbon footprints for informed ecological decisions.

**Highlights:** Asbestos detection from photos, Eco-label verification, Waste classification, Pollution detection, Carbon footprint calculation, Sustainability report generation, Environmental policy review

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is The World Tree App free?

The World Tree App is free to download, with no in-app purchases.

### Is ECO AI Assistant free?

ECO AI Assistant is free to download, with no in-app purchases.

### Which has better reviews, The World Tree App or ECO AI Assistant?

ECO AI Assistant is rated higher. The World Tree App averages 2.0 out of 5 from 3 ratings, while ECO AI Assistant averages 5.0 from 1 ratings.

### Do The World Tree App or ECO AI Assistant have ads?

Neither The World Tree App nor ECO AI Assistant shows ads.

### Which is updated more often, The World Tree App or ECO AI Assistant?

The World Tree App ships an update every 14 months, and ECO AI Assistant every 2 weeks. Most recently, The World Tree App was updated on October 16, 2026 and ECO AI Assistant 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.*