# FEUrea Calculator vs Calculator for Complex Field

The clearest difference is update cadence: Calculator for Complex Field at fortnightly against FEUrea Calculator's every 5 months. FEUrea Calculator's advantage is iOS requirement (12.1 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 Calculator ships an update every 5 months, Calculator for Complex Field fortnightly. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | FEUrea Calculator | 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 5 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 13 MB | 1 MB |
| Requires iOS | **12.1** | 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 Calculator

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

**Features:** macOS Compatibility

**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 Calculator free?

FEUrea Calculator 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 Calculator or Calculator for Complex Field have ads?

Neither FEUrea Calculator nor Calculator for Complex Field shows ads.

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

FEUrea Calculator ships an update every 5 months, and Calculator for Complex Field fortnightly. Most recently, FEUrea Calculator was updated on October 9, 2026 and Calculator for Complex Field on October 24, 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.*