# FEUrea – Ratio Calculator — Fractional Excretion of Urea

> Fractional Excretion of Urea (iPhone/iPad app by Krzysztof Gwiazda.)

- Source: https://appshunter.io/ios/app/feurea-ratio-calculator/id6460858599 (this page in markdown: same URL + `.md`)
- Developer: [Krzysztof Gwiazda](https://appshunter.io/developer/1546740383)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 15 · 11 MB
- Languages: American English
- Released: 2023-08-11
- Data updated: 2026-11-12

## What is FEUrea?

**FEUrea – Ratio Calculator**

Calculate ratios, percentages, and numerical values quickly and easily with FEUrea – Ratio Calculator. A simple, fast, and intuitive calculation tool designed to make everyday numerical calculations effortless.

Whether you need to calculate a ratio, work with percentages, convert between supported units, or compare numerical values, FEUrea provides a straightforward way to get results in seconds.

**KEY FEATURES**

**Ratio Calculator**
Enter four numerical values and instantly calculate a percentage-based ratio using a predefined formula. No complicated steps or manual calculations required.

**Percentage Calculator**
Get fast and accurate percentage results based on your entered values. Easily review and update your calculations whenever needed.

**Unit Converter**
Switch between supported measurement units directly within the calculator. Convenient unit selection makes working with different numerical formats simple.

**Decimal Number Support**
Enter decimal values using a period or comma, with support for Arabic decimal separators and numerals. Enjoy flexible number entry across different regional settings.

**Instant Results**
Results update automatically as you enter or modify values. No additional calculation button is needed.

**Simple and Intuitive Interface**
Four clearly organized input fields, convenient unit selection buttons, and an easy-to-read result display make calculations quick and efficient.

**ADDITIONAL BENEFITS**

- Fast ratio and percentage calculations
- Convenient numerical value conversion
- Support for multiple decimal separators
- Automatic calculations and instant updates
- Easy switching between supported units
- Clean, straightforward calculator interface
- No complicated setup required

**SIMPLIFY YOUR CALCULATIONS**

FEUrea – Ratio Calculator combines ratio calculations, percentage calculations, and unit conversion in one convenient application.

Enter your values, choose the appropriate units, and let the calculator handle the mathematics.

Download FEUrea – Ratio Calculator and enjoy fast, simple, and convenient calculations anytime.

## Is FEUrea safe?

Not enough ratings yet to assess FEUrea.

## Is FEUrea legit?

FEUrea – Ratio Calculator appears to be a legitimate app. The AppsHunter Legitimacy Score for FEUrea is 90 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 2.0 — 2026-11-10

We've improved the app with updated components, enhanced performance, and greater stability.

• Improved decimal input with support for periods, commas, and Arabic decimal separators.
• Enhanced locale support with automatic number formatting based on regional settings.
• Improved compatibility with international number formats and Arabic numerals.
• Updated calculation and unit conversion functionality.
• Performance optimizations and bug fixes.
• Improved compatibility with the latest iOS versions.

Enjoy a faster, smoother, and more reliable experience!

### 1.0.1 — 2024-01-09

EU GDPR consent form

### 1.0 — 2023-08-11

No release notes.

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All apps by Krzysztof Gwiazda: https://appshunter.io/developer/1546740383

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-12.*