# Cube Root Calculator SDG vs Unit Eater

The clearest difference is in-app purchases: Cube Root Calculator SDG at none against Unit Eater's 2. Unit Eater's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 12 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Unit Eater sells 2 in-app purchases, starting at $0.99 per month. Cube Root Calculator SDG asks for nothing beyond the download.

Cube Root Calculator SDG ships an update every 12 months, Unit Eater every 2 weeks. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Cube Root Calculator SDG | Unit Eater |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 12 MB | 65 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [SDG CODE DOO NIS](https://appshunter.io/developer/1343251532) | [Tom Leon Schmidt](https://appshunter.io/developer/1634212175) |

## What reviewers say

### Cube Root Calculator SDG

[App page](https://appshunter.io/ios/app/cube-root-calculator-sdg/id6741202278)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Eater

[App page](https://appshunter.io/ios/app/unit-eater/id6742549723)

This utility app functions as a powerful calculator that handles unit conversions and calculations. It supports a vast array of predefined units and allows users to define their own, making it ideal for scientific and academic tasks. Features include a calculation history, customizable results, and dark mode.

**Highlights:** Unit conversion and calculation, Custom unit definition, Extensive unit library, Calculation history, Customizable result format, Dark mode

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Monthly | $0.99 | per month |
| Premium - Pay once | $3.99 | one-time |


## Frequently asked questions

### Is Cube Root Calculator SDG free?

Cube Root Calculator SDG is free to download, with no in-app purchases.

### Is Unit Eater free?

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

### Do Cube Root Calculator SDG or Unit Eater have ads?

Cube Root Calculator SDG shows ads; Unit Eater does not.

### Which is updated more often, Cube Root Calculator SDG or Unit Eater?

Cube Root Calculator SDG ships an update every 12 months, and Unit Eater every 2 weeks. Most recently, Cube Root Calculator SDG was updated on October 10, 2026 and Unit Eater on September 30, 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.*