Apps by Crimson Research, Inc.
Crimson Calculator 41cx app icon

Education

Crimson Calculator 41cx

Crimson Research, Inc.

$4.99 5.00 · 1 storefront · 3 ratings In-app purchases unconfirmed
Open on Apple

About this app

The Calc41Cx is a programmable, continuous memory RPN calculator with the following features: Access to the stack and LASTx via STO and RCL commands. 200-2000 Lines of program memory. Label addressing with strings 30 user and 26 system Flags. Conditional and unconditional branching Convenient insertion and deletion of program steps. Indirect addressing via any register using the IND modifier. ISG and DSE looping. 6 levels of subroutines. Alphanumeric display, storage, and programming.

Latest release

What’s New

Version 2.1.0 Aug 7, 2023

Deployment target to 14 and colors

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
3 ratings
3 Sep 3, 2026 · 3 ratings Sep 3, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current $4.99
Historical low USD 4.99
Paid → free 0×
Price history
Current $4.99
$4.99 $2.50 Free Sep 3, 2026 · $4.99 Sep 3, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Sep 3, 2026 · 10:14 AM $4.99

Screenshots

Crimson Calculator 41cx iPhone screenshotCrimson Calculator 41cx iPhone screenshot Crimson Calculator 41cx iPad screenshot