Modern RPN
Modern RPN calculator
$2.99 · Designed for iPad. Not verified for macOS.
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.
- Various bugfixes
The developer, Kevin Flathers, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kevin Flathers
- Size
- 2.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.2 or later.
- iPhone
Requires iOS 26.2 or later. - iPad
Requires iPadOS 26.2 or later. - Mac
Requires macOS 26.2 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Kevin Flathers
