# Complex RPN Calculator vs Calculator for Complex Field

The clearest difference is review sentiment: Calculator for Complex Field at 100% against Complex RPN Calculator's 52%. Calculator for Complex Field also leads on rating (5.0 vs 3.9) and update cadence (fortnightly vs every 5 months). Complex RPN Calculator's advantage is ratings volume (24 vs 4). On price, ads, in-app purchases and monetization model 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 3.9. That said, the two scores are not equally well evidenced: Complex RPN Calculator has 24 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 52% of Complex RPN Calculator's written reviews are positive against 100% of Calculator for Complex Field's.

Complex RPN Calculator ships an update every 5 months, Calculator for Complex Field fortnightly. The most recent releases landed on October 21, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Complex RPN Calculator | Calculator for Complex Field |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (24 ratings)](https://appshunter.io/ios/app/complex-rpn-calculator/id291826330/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/calculator-for-complex-field/id6502463794/reviews)** |
| Number of ratings | **24** | 4 |
| Positive reviews | 51.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 1 MB | 1 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [John Coddington](https://appshunter.io/developer/291826333) | [Jongseung Park](https://appshunter.io/developer/1745560101) |

## What reviewers say

### Complex RPN Calculator

[App page](https://appshunter.io/ios/app/complex-rpn-calculator/id291826330)

This scientific calculator utilizes a four-level stack and natively handles complex numbers. It allows users to input and view numbers in both polar and rectangular formats, remembering its state and offering 10 memory locations.

**Highlights:** Complex number support, Four-level stack, Polar and rectangular formats, State persistence, 10 memory locations, Scientific calculations

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✅ Great RPN functionality
- ✨ Complex number support
- 🆓 Free to use
- 🚫 No ads or in-app purchases
- 💻 Works on macOS

**What reviewers complain about**

- 🎨 SwiftUI design is ugly
- 🐌 Slow keyboard response
- 🖱️ Clunky operation
- 📉 Complex number operations limited
- ⚠️ Broken on newer iOS versions (historically)

**Reported bugs**

- Mutes other apps when used
- Slow keyboard response after update
- X^3 calculation incorrect for large imaginary numbers
- App crashes on opening/button press (historical iOS 9 issues)
- App starts upside down in landscape on iPad (historical iOS 8 issue)

**Requested features**

- Turn off key click sound
- Customize number display
- See the stack
- Fix slow entry response
- Fix imaginary number calculation (X^3)


### 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 Complex RPN Calculator free?

Complex RPN 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.

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

Calculator for Complex Field is rated higher. Complex RPN Calculator averages 3.9 out of 5 from 24 ratings, while Calculator for Complex Field averages 5.0 from 4 ratings.

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

Neither Complex RPN Calculator nor Calculator for Complex Field shows ads.

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

Complex RPN Calculator ships an update every 5 months, and Calculator for Complex Field fortnightly. Most recently, Complex RPN Calculator was updated on October 21, 2026 and Calculator for Complex Field on October 2, 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.*