# A Complex Calc vs bcRPN

The clearest difference is update cadence: A Complex Calc at every 3 weeks against bcRPN's every 22 months. A Complex Calc also leads on ratings volume (23 vs 4) and iOS requirement (10.0 vs 15.0). On price, rating, review sentiment 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 — 4.7 for A Complex Calc against 4.8 for bcRPN. That said, the two scores are not equally well evidenced: A Complex Calc has 23 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 80% and 80% positive.

A Complex Calc ships an update every 3 weeks, bcRPN every 22 months. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | A Complex Calc | bcRPN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (23 ratings)](https://appshunter.io/ios/app/a-complex-calc/id1372571548/reviews) | **[4.8 (4 ratings)](https://appshunter.io/ios/app/bcrpn/id1614744829/reviews)** |
| Number of ratings | **23** | 4 |
| Positive reviews | 80.0% of reviews | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 22 months |
| Monetization | Free | Free |
| Size | 28 MB | 0 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Antonio Ruffolo](https://appshunter.io/developer/1372571547) | [Paul Wilkins](https://appshunter.io/developer/1614739840) |

## What reviewers say

### A Complex Calc

[App page](https://appshunter.io/ios/app/a-complex-calc/id1372571548)

Perform complex calculations with a modern, user-friendly interface. Offers both basic and scientific modes, including support for complex numbers and advanced functions. This lightweight application provides a history of computations and is completely free with no advertisements.

**Highlights:** Complex number support, Basic and Scientific modes, History of operations, Trigonometric and hyperbolic functions, Random number generation, Lightweight app size

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

**In-app purchases:** none


### bcRPN

[App page](https://appshunter.io/ios/app/bcrpn/id1614744829)

This utility app functions as a Reverse Polish Notation calculator. It handles complex numbers and utilizes extended precision for all calculations, offering an unlimited stack depth and an undo feature for up to 10 operations.

**Highlights:** Reverse Polish Notation (RPN) input, Complex number calculations, Extended precision math, Unlimited stack depth, Undo functionality (up to 10 operations)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is A Complex Calc free?

A Complex Calc is free to download, with no in-app purchases.

### Is bcRPN free?

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

### Which has better reviews, A Complex Calc or bcRPN?

bcRPN is rated higher. A Complex Calc averages 4.7 out of 5 from 23 ratings, while bcRPN averages 4.8 from 4 ratings.

### Do A Complex Calc or bcRPN have ads?

Neither A Complex Calc nor bcRPN shows ads.

### Which is updated more often, A Complex Calc or bcRPN?

A Complex Calc ships an update every 3 weeks, and bcRPN every 22 months. Most recently, A Complex Calc was updated on October 14, 2026 and bcRPN on October 7, 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.*