--- title: "i41CX — App Overview" url: https://marlvel.ai/apps/com-alsoftware-i41cx category: Productivity developer: Antonio Lagana platforms: ios rating: 4.6 (43 ratings) pricing: paid report_level: overview generated: 2026-04-24 last_verified: "2026-05-11T06:43:08.826Z" --- > **Key Insight:** This app serves as a high-fidelity digital replacement for the HP-41CX, offering a scalable feature set through optional in-app upgrades. | Metric | Value | |--------|-------| | Category | Productivity | | Rating | 4.6 ★ (43) | | Pricing | paid | | Platforms | iOS | | Latest Version (iOS) | 7.6.19 | | Developer | Antonio Lagana | ## What is i41CX? i41CX is a programmable RPN scientific calculator that replicates the functionality of the HP-41CX. It offers a streamlined alternative to the i41CX+ model, with the option to unlock advanced capabilities like CAS and printer support via in-app purchases. ## Key Features - **RPN Logic**: Utilizes Reverse Polish Notation with a 4-element deep memory stack for scientific calculations. - **Memory Capacity**: Includes 319 main and 124 extended memory registers for complex programming tasks. - **Built-in Functions**: Provides over 300 built-in functions, including nearly 100 specialized functions. - **Customizable Interface**: Features responsive animated key clicks, audible feedback, and a variety of traditional and modern skins. ## Who is it for? Engineers, scientists, and legacy users seeking a mobile emulation of the classic HP-41CX calculator. ## Links - [App Store](https://apps.apple.com/us/app/i41cx/id292619450?uo=2) - [Full Intelligence Report](https://marlvel.ai/apps/com-alsoftware-i41cx) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/com-alsoftware-i41cx).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*