Report updated May 11, 2026
i41CX
For engineers, scientists, and legacy users seeking a mobile emulation of the classic HP-41CX calculator.
Overview · Full Intel report in progress
i41CX is an established productivity app that is a paid app. With a 4.6/5 rating from 43 reviews, it shows polarized user reception.
What is i41CX?
Current Momentum
v7.6 · 2mo ago
ActiveLast updated 86d ago. 5 versions tracked.
Competition
Rivals identification in progress
7-Day Rank Pulse 🇺🇸
ProductivityRating Pulse 🇺🇸
What makes this app unique?
What Does It Look Like?
What Are The Key Features?
Utilizes Reverse Polish Notation with a 4-element deep memory stack for scientific calculations.
Includes 319 main and 124 extended memory registers for complex programming tasks.
Provides over 300 built-in functions, including nearly 100 specialized functions.
Features responsive animated key clicks, audible feedback, and a variety of traditional and modern skins.
How much does it cost?
Who Built It?
Antonio Lagana
Providing high-fidelity scientific calculator emulations for engineers and legacy hardware enthusiasts. Bridging the gap between vintage RPN logic and modern mobile computing.
Portfolio
2
Apps
What other apps does Antonio Lagana make?
Explore the full Antonio Lagana report
Portfolio breakdown, audience, momentum, and every app published by Antonio Lagana.
Analysis in progress, available soon
What do users think recently?
Analysis in progress, available soon
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
Analysis in progress, available soon
What is the competitive landscape for i41CX?
How's The Productivity Market?
How does it evolve in the Productivity market?
Rank progression
14 active rankings tracked — 30-day window
Strategic analysis coming soon
SWOT, key takeaways & outlook
The outtake for i41CX
Key Takeaways
This app serves as a high-fidelity digital replacement for the HP-41CX, offering a scalable feature set through optional in-app upgrades.
Where Is It Heading?
Trend analysis
Available very soon