# Unit Eater vs SmartCalc Easy

The clearest difference is in-app purchases: SmartCalc Easy at none against Unit Eater's 2. Unit Eater's advantage is ads (none vs shown) and device support (4 vs 2). On price and update cadence there is nothing between them.

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

Unit Eater ships an update every 2 weeks, SmartCalc Easy every 3 weeks. The most recent releases landed on September 11, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | Unit Eater | SmartCalc Easy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 65 MB | 5 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tom Leon Schmidt](https://appshunter.io/developer/1634212175) | [Younghan Kim](https://appshunter.io/developer/1859100256) |

## What reviewers say

### 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 |


### SmartCalc Easy

[App page](https://appshunter.io/ios/app/smartcalc-easy/id6757077422)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unit Eater free?

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

### Is SmartCalc Easy free?

SmartCalc Easy is free to download, with no in-app purchases.

### Do Unit Eater or SmartCalc Easy have ads?

SmartCalc Easy shows ads; Unit Eater does not.

### Which is updated more often, Unit Eater or SmartCalc Easy?

Unit Eater ships an update every 2 weeks, and SmartCalc Easy every 3 weeks. Most recently, Unit Eater was updated on September 11, 2026 and SmartCalc Easy on September 5, 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.*