# EZrr Calculator vs Unit Eater

The clearest difference is in-app purchases: EZrr Calculator at none against Unit Eater's 2. EZrr Calculator also leads on update cadence (daily vs fortnightly) and iOS requirement (15.0 vs 17.0). On price, review sentiment, ads and device support there is nothing between them.

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

EZrr Calculator ships an update daily, Unit Eater fortnightly. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | EZrr Calculator | Unit Eater |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/ezrr-calculator/id6738098865/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Fortnightly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 47 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [EZR Companies LLC](https://appshunter.io/developer/1546678399) | [Tom Leon Schmidt](https://appshunter.io/developer/1634212175) |

## What reviewers say

### EZrr Calculator

[App page](https://appshunter.io/ios/app/ezrr-calculator/id6738098865)

A straightforward calculator designed for simplicity and older devices. It provides a quick utility for basic calculations when you need a reliable tool.

**Highlights:** Simple interface, Basic calculations, Designed for older devices, Quick utility tool

**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 EZrr Calculator free?

EZrr Calculator 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 EZrr Calculator or Unit Eater have ads?

Neither EZrr Calculator nor Unit Eater shows ads.

### Which is updated more often, EZrr Calculator or Unit Eater?

EZrr Calculator ships an update daily, and Unit Eater fortnightly. Most recently, EZrr Calculator was updated on October 30, 2026 and Unit Eater on November 4, 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.*