DB50X

DB50X

Color version of DB48X

8 ratings
4 reviews
$9.99

Details

  • Released
  • Updated
  • August 19, 2024
  • May 25, 2026

Features

DB50X video #1 for iPhone
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DB50X screenshot #4 for iPhone
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DB50X screenshot #7 for iPhone
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About

This scientific calculator offers high-precision computations with arbitrary precision for numbers. It supports advanced functions like complex numbers, matrices, symbolic calculations, and graphing, with a user-friendly interface and extensive built-in help.

Arbitrary precision calculations
RPN and algebraic operations
Complex numbers, vectors, matrices
Symbolic and numerical solving
Graphing and plotting
Engineering units and constants
Unicode text support
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What's New in DB50X

0.9.19

May 25, 2026

This release brings an improved constants library with Astronomy and Materials sections, the Quote command, GCD and LCM commands, and several other improvements. See release notes (https://github.com/c3d/db48x/releases/tag/v0.9.19) for details.

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User reviews

Greatest evolution of great HP calculators of the past. Wish there were a Windows PC emulator.

Christophe, would it be possible to create a Windows PC emulator of the DB50X? It would be helpful for me to have this open when working in 3D CAD.

Some keypad confusion

The 1/x key should have e^x top left yellow and ln top right blue. The root x key should have x root y top right blue. Edit c.

Not an HP48 clone, better!

This guy started trying to make something similar to the HP48 family of calculators, but is ending up with something better. It is designed to be installed on a swissmicro calculator, but this IOS app works the same and is nicer than the other HP48/50 emulators.

Goodbye HP 28s —> HP50g… Hello DB50X

Finally we are getting a modern calculator that carries forward the brilliance of the HP 28s family. Great work with the unit conversions and looking forward to creating a family of equations that can share common variables! Then I can put my tired HP50g that away with my original HP28s! I’m finding that the innovative menu system is intuitive and quickly familiar. Thanks
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Developer apps

FAQ

What makes DB50X different from a standard calculator app?

DB50X offers arbitrary precision for calculations, meaning you can compute with an unlimited number of digits. It also includes advanced features like symbolic computations, complex number operations in polar and rectangular forms, and extensive graphing capabilities.

Can DB50X run programs from older HP calculators?

DB50X can run many user RPL programs designed for HP48, HP49, or HP50 directly. However, it is not an emulator and will not run any HP binary objects or system RPL, such as games.

How does DB50X handle complex numbers?

Complex numbers in DB50X can mix and match polar and rectangular forms. Symbolic operations also extend to complex numbers, providing advanced manipulation capabilities.

What kind of display does DB50X have?

DB50X features a high-resolution 240x400 pixels graphical color display. This allows for clear visualization of graphs and multiple colors to distinguish them.

Is DB50X available on multiple devices?

Yes, DB50X is supported on iPhone, iPad, and iPod. It also integrates with iCloud for saving and editing programs on your Mac.

How often is DB50X updated?

The latest version is 0.9.17, last updated on March 10, 2026. This indicates a recent and active development cycle for the application.

What is the pricing for DB50X?

DB50X is a paid application, available for $9.99. This one-time purchase provides access to all its advanced scientific calculation features.

Does DB50X have ads?

No, DB50X does not contain advertisements. As a paid application, it offers an ad-free experience for uninterrupted use.