# ThetaCalc vs Calculator for Complex Field

The clearest difference is rating: Calculator for Complex Field at 5.0 against ThetaCalc's 4.3. Calculator for Complex Field also leads on update cadence (fortnightly vs every 3 months). On price, review sentiment, ratings volume and ads there is nothing between them.

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

Calculator for Complex Field holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

ThetaCalc ships an update every 3 months, Calculator for Complex Field fortnightly. The most recent releases landed on October 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ThetaCalc | Calculator for Complex Field |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (4 ratings)](https://appshunter.io/ios/app/thetacalc/id1521614636/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/calculator-for-complex-field/id6502463794/reviews)** |
| Number of ratings | 4 | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 1 MB | 1 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Felix Stehli](https://appshunter.io/developer/1521614638) | [Jongseung Park](https://appshunter.io/developer/1745560101) |

## What reviewers say

### ThetaCalc

[App page](https://appshunter.io/ios/app/thetacalc/id1521614636)

This utility app provides a Reverse Polish Notation (RPN) calculator. Users can extend its functionality by programming custom functions and equations using JavaScript.

**Highlights:** Reverse Polish Notation (RPN) calculator, User-programmable functions, JavaScript equation support, Extensible functionality

**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 ThetaCalc free?

ThetaCalc 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.

### Which has better reviews, ThetaCalc or Calculator for Complex Field?

Calculator for Complex Field is rated higher. ThetaCalc averages 4.3 out of 5 from 4 ratings, while Calculator for Complex Field averages 5.0 from 4 ratings.

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

Neither ThetaCalc nor Calculator for Complex Field shows ads.

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

ThetaCalc ships an update every 3 months, and Calculator for Complex Field fortnightly. Most recently, ThetaCalc was updated on October 1, 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.*