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GridCalc, an RPN Spreadsheet for iOS

GridCalc, an RPN Spreadsheet for iOS

by wooby·Feb 18, 2026·2 points·0 comments
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AI Analysis

●●SolidNiche GemSolve My Problem
The Take

The core idea is neat: put an RPN stack into a spreadsheet-like grid so you get both terse, stepwise entry and immediate dependency updates when you change an input. That combo feels like a thoughtful mobile-first answer to cramped phone spreadsheets. Main caveats: it's niche (RPN devotees) and the demo page gives little evidence about export, collaboration, or how complex formulas are expressed.

Category
Productivity
Target Audience

Engineers, accountants and power users who do ad-hoc numeric work on mobile (RPN fans and spreadsheet-heavy mobile users)

Post Description

I built GridCalc, an RPN spreadsheet for iOS.

It combines the efficiency of Reverse Polish Notation with the visible structure and reactivity of a spreadsheet. You enter numbers and operators step by step, and you can retroactively change any value. All dependent calculations update immediately.

I love spreadsheets but I've never liked how cramped traditional spreadsheets feel on a phone. My goal was to make ad‑hoc, spreadsheet-like calculation on a phone feel direct and fluid.

Here’s a short demo: https://youtu.be/M0HwzrGGuyc

App Store link: https://apps.apple.com/us/app/gridcalc/id6759011187

Happy to answer questions.

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