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.
Security patches and 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
- 2.5 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
