AppPriceDataObserved data
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MARCEL DAN
An RPN calculator isn't just a tool for getting answers like a traditional exam calculator—it's a way of thinking. It mirrors how you naturally break problems into steps, making it more like an extension of your mind than a shortcut.
The latest observed download price is Free. Open the official App Store link to confirm the current checkout price.
Items currently visible on Apple’s public App Store page. This may not be the complete App Store Connect catalog.
Source: Apple public App Store page · publicly visible items only
An RPN calculator isn't just a tool for getting answers like a traditional exam calculator—it's a way of thinking. It mirrors how you naturally break problems into steps, making it more like an extension of your mind than a shortcut.
A full HP-style RPN scientific calculator — on iPhone and iPad, offline, with no ads or tracking.
47 Calculator is a programmable Reverse Polish Notation scientific calculator. Trigonometry, logarithms, statistics, probability, finance, complex numbers, base conversions, matrix operations, numerical solvers — the full 47-series instruction set, in your pocket.
Free includes the calculator, a program editor for reading and writing 47-series programs, reference documentation, and a full tutorial library — probability and statistics, finance, numerical methods, programming patterns, advanced RPN techniques.
The Pro version adds the Explorer — browse every menu, flag, mode, and operation the engine supports, searchable and cross-linked.
Works fully offline after first launch. Light and dark themes. No ads, no third-party analytics, no tracking, no account required.
Quick answers based on the latest observed App Store data.
The latest observed download price is Free. Open the official App Store link to confirm the current checkout price.
Apple’s public page currently shows 0 purchase items in this storefront. The public list may be incomplete.
