# Unit Eater vs ReadableCalc

The clearest difference is in-app purchases: ReadableCalc at none against Unit Eater's 2. On price, update cadence, 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. ReadableCalc asks for nothing beyond the download.

Unit Eater ships an update every 2 weeks, ReadableCalc weekly. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Unit Eater | ReadableCalc |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 65 MB | 28 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tom Leon Schmidt](https://appshunter.io/developer/1634212175) | [YONAGARE LAB](https://appshunter.io/developer/1810986554) |

## 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 |


### ReadableCalc

[App page](https://appshunter.io/ios/app/readablecalc/id6747457253)

**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 ReadableCalc free?

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

### Do Unit Eater or ReadableCalc have ads?

Neither Unit Eater nor ReadableCalc shows ads.

### Which is updated more often, Unit Eater or ReadableCalc?

Unit Eater ships an update every 2 weeks, and ReadableCalc weekly. Most recently, Unit Eater was updated on October 16, 2026 and ReadableCalc on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*