# The World Tree App vs Hammer Construction Calculator

The clearest difference is rating: Hammer Construction Calculator at 3.0 against The World Tree App's 2.0. Hammer Construction Calculator also leads on update cadence (every 6 weeks vs every 14 months). The World Tree App's advantage is in-app purchases (none vs 2) and review sentiment (25% vs 0%). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Hammer Construction Calculator sells 2 in-app purchases, starting at $3.99 per month. The World Tree App asks for nothing beyond the download.

Hammer Construction Calculator holds the better App Store score, 3.0 against 2.0. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews complicate that: 25% of The World Tree App's written reviews are positive against 0% of Hammer Construction Calculator's, so the app with the better star average is not the one people write more warmly about.

The World Tree App ships an update every 14 months, Hammer Construction Calculator every 6 weeks. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | The World Tree App | Hammer Construction Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/the-world-tree-app/id1603319087/reviews) | **[3.0 (3 ratings)](https://appshunter.io/ios/app/hammer-construction-calculator/id6747408084/reviews)** |
| Number of ratings | 3 | 3 |
| Positive reviews | **25.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 39 MB |
| Requires iOS | **14.5** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Jeff Santos](https://appshunter.io/developer/1603319089) | [garrett hiebert](https://appshunter.io/developer/1821314687) |

## 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


### Hammer Construction Calculator

[App page](https://appshunter.io/ios/app/hammer-construction-calculator/id6747408084)

This app provides advanced construction calculations, including feet-inch-fraction math and specialized tools for various trades. It also offers material takeoff and PDF quote generation, with features for jobsite planning and notes.

**Highlights:** Feet-inch-fraction math with metric conversion, 20 specialized trade calculators with diagrams, Material takeoff and PDF quote generation, Jobsite plans and notes with blueprint support, Offline functionality, Customizable rounding and unit support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HammerCalc Monthly | $3.99 | per month |
| HammerCalc Yearly | $24.99 | per year |


## Frequently asked questions

### Is The World Tree App free?

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

### Is Hammer Construction Calculator free?

Hammer Construction Calculator is free to download, with in-app purchases available.

### Which has better reviews, The World Tree App or Hammer Construction Calculator?

Hammer Construction Calculator is rated higher. The World Tree App averages 2.0 out of 5 from 3 ratings, while Hammer Construction Calculator averages 3.0 from 3 ratings.

### Do The World Tree App or Hammer Construction Calculator have ads?

Neither The World Tree App nor Hammer Construction Calculator shows ads.

### Which is updated more often, The World Tree App or Hammer Construction Calculator?

The World Tree App ships an update every 14 months, and Hammer Construction Calculator every 6 weeks. Most recently, The World Tree App was updated on October 16, 2026 and Hammer Construction Calculator on October 7, 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.*