# FEUrea vs Calculator for Complex Field

The clearest difference is update cadence: Calculator for Complex Field at fortnightly against FEUrea's every 20 months. FEUrea's advantage is iOS requirement (15 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

FEUrea ships an update every 20 months, Calculator for Complex Field fortnightly. The most recent releases landed on November 12, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | FEUrea | Calculator for Complex Field |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/calculator-for-complex-field/id6502463794/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 11 MB | 1 MB |
| Requires iOS | **15** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Krzysztof Gwiazda](https://appshunter.io/developer/1546740383) | [Jongseung Park](https://appshunter.io/developer/1745560101) |

## What reviewers say

### FEUrea

[App page](https://appshunter.io/ios/app/feurea-ratio-calculator/id6460858599)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Calculator for Complex Field

[App page](https://appshunter.io/ios/app/calculator-for-complex-field/id6502463794)

Input natural math expressions and get instant results on a separate line, allowing for easy revisions. Save up to 20 inputs and incorporate saved answers into new expressions. Supports complex field calculations with adjustable decimal digits and three output formats.

**Highlights:** Natural math expression input, Automatic result display, Input revision for updated results, Save and reuse up to 20 inputs, Incorporate saved answers into expressions, Complex field calculations, Adjustable decimal digits, Three output formats (Fixed, Scientific, Engineering)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FEUrea free?

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

### Is Calculator for Complex Field free?

Calculator for Complex Field is free to download, with no in-app purchases.

### Do FEUrea or Calculator for Complex Field have ads?

Neither FEUrea nor Calculator for Complex Field shows ads.

### Which is updated more often, FEUrea or Calculator for Complex Field?

FEUrea ships an update every 20 months, and Calculator for Complex Field fortnightly. Most recently, FEUrea was updated on November 12, 2026 and Calculator for Complex Field 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.*