roman_decoder

January 24, 2026 ยท View on GitHub

An Flipper Zero app that converts Roman numerals to decimal values.

Roman Decoder

Roman Decoder is an application that allows users to easily convert Roman numerals to decimals. The app provides an interactive user interface that allows users to select Roman characters through buttons, as well as to see the conversion result instantly with proper validation.

Features

  • Interactive Dialing:Users can use the buttons to navigate through Roman numerals.
  • Real-time conversion: The app converts Roman numerals to decimal values in real-time, while the user enters characters.
  • Display of results: The result of a conversion or input error is displayed clearly on the screen.
  • Reset Functionality: Quickly clear input and start over
  • Input Validation: Enforces Roman numeral rules and maximum value limits

Controls

  • Right button to select the next Roman numeral.
  • Left button to return to the previous Roman numeral.
  • OK button to add the currently selected Roman numeral to your entry.
  • Up button: clear all input
  • Press the back button to delete the last entry.
  • Long press the back button to exit the app.

Version History

  • 0.2 - Added input validation, Roman numeral rules, reset functionality, and improved UI
  • 0.1 - Initial release

Author

@evillero