# SigiCalc vs RPN Big Integer Calculator

SigiCalc and RPN Big Integer Calculator both sit at 5.0 stars, but that hides the real split: 100% of RPN Big Integer Calculator's written reviews are positive against 50% of SigiCalc's. RPN Big Integer Calculator also leads on iOS requirement (9.3 vs 17.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for SigiCalc against 5.0 for RPN Big Integer Calculator. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews are what separate them: 50% of SigiCalc's written reviews are positive against 100% of RPN Big Integer Calculator's.

## The numbers

| Metric | SigiCalc | RPN Big Integer Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/sigicalc/id522503444/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/rpn-big-integer-calculator/id1300713250/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 48 months | — |
| Monetization | Free | Free |
| Size | 3 MB | 19 MB |
| Requires iOS | 17.0 | **9.3** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Siegware](https://appshunter.io/developer/443908611) | [Stephan Jancar](https://appshunter.io/developer/1107422127) |

## What reviewers say

### SigiCalc

[App page](https://appshunter.io/ios/app/sigicalc/id522503444)

This app provides a graphical RPN calculator with an undo feature. Users can input mathematical equations and instantly visualize them with a plot. It's designed for simplicity and practicality in mathematical calculations.

**Highlights:** Graphical RPN calculator, Equation plotting, Undo functionality, Simple interface, Practical calculations

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

**In-app purchases:** none


### RPN Big Integer Calculator

[App page](https://appshunter.io/ios/app/rpn-big-integer-calculator/id1300713250)

This application provides a Reverse Polish Notation (RPN) calculator designed for handling very large numbers, up to 1024 bits. It specializes in prime number calculations and the factorization of substantial integers.

**Highlights:** RPN calculator interface, Big Integer support (up to 1024 bits), Prime Number Calculations, Factorization of large numbers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SigiCalc free?

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

### Is RPN Big Integer Calculator free?

RPN Big Integer Calculator is free to download, with no in-app purchases.

### Which has better reviews, SigiCalc or RPN Big Integer Calculator?

SigiCalc and RPN Big Integer Calculator are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do SigiCalc or RPN Big Integer Calculator have ads?

Neither SigiCalc nor RPN Big Integer Calculator shows ads.

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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.*