# Crimson Calculator 41cx — user reviews

> 4 indexed App Store user reviews of Crimson Calculator 41cx by Crimson Research, Inc., rated 5.00/5 from 3 ratings.

- Source: https://appshunter.io/ios/app/crimson-calculator-41cx/id427517928/reviews
- App overview in markdown: https://appshunter.io/ios/app/crimson-calculator-41cx/id427517928.md
- Rating breakdown: 5★ 3 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 0

## Most critical reviews (4 lowest-rated)

### 1/5 — Broken

*2012-11-30, version 1.1.2*

I just installed this app and was not able to enter any values, and the app was completely unresponsive and nonfunctional.

### 3/5 — Good first attemp

*2011-10-12, version 1.1.0*

I am all for lower cost software and the developers are to be applauded for releasing this reasonable emulation of the 41CX at a very reasonable price.

And this release is quite useful if you want to see if you "like" having a 41CX on your iPhone.

Unfortunately if you are serious about using all of the functionality of the 41CX, the current release of this app fails.

At least in my configuration (iPhone 4/iOS 4.3.5) some functions do not execute. E.g., Beep, Tone n, Clock., XYZALM.  And Seekpta causes some major memory shifts resulting in a loss of calculator programmed functions.

I have alerted the developers and hopefully they will address these deficiencies.

### 4/5 — HP 41CX

*2012-11-10, version 1.1.2*

Great app!  Can the calculator go landscape of portrait?
thanks

### 5/5 — Thank you for making this awesome cx,  it works great.

*2013-12-09, version 1.2.1*

I lived on a 41cx through college and this is a great replica.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-05.*