Modern RPN is a minimalist reverse polish notation calculator for iPhone and iPad, with Standard,
Binary, and Hex modes for fast everyday math and programmer-friendly conversions.
Use a clean 4-level stack, instant mode switching, calculation history, and saved session state to
move quickly without clutter.
Features:
• True RPN input with ENTER to push or duplicate values
• Standard, Binary, Financial, and Hex calculator modes
• Mode-aware entry and display formatting
• 4-level visible stack: T, Z, Y, X
• Core operations: add, subtract, multiply, divide
• Stack tools: POP, X/Y swap, sign toggle, backspace, and all clear
• Calculation history with timestamps
• History filtering by All, Standard, Binary, Financial, or Hex
• Saved session state for your current mode, stack, and in-progress input
• Clean dark interface designed for focus and readability
• No accounts, no ads, no data collection
Modern RPN is designed for people who want the speed of a classic RPN calculator with a modern iOS
interface.
