What is NumPad?
NumPad is an offline-first notepad calculator for the web. It does calculations with units, dates, variables and more. It even has markdown support! Pro users can make as many documents as they like and sync them between devices.
Problem
Users need to switch between basic text editors and separate calculators for note-taking and calculations, which lack integration, advanced calculation features (units, dates, variables), and markdown support.
Solution
A web-based text editor with built-in advanced calculator functionality, allowing users to perform inline calculations with units/dates/variables and format notes using markdown. Example: Writing project notes with real-time budget calculations in USD.
Customers
Engineers, developers, data analysts, researchers, and students who require integrated technical documentation and calculations.
Unique Features
Combines rich-text editing with a computational engine supporting variables, unit conversions (e.g., 5km → miles), date math (e.g., +2 weeks), and offline-first functionality with cross-device sync for Pro users.
User Comments
Saves time by eliminating app-switching
Markdown support enhances readability
Pro sync is reliable across devices
Learning curve for calculation syntax
Wish for mobile app integration
Traction
Featured on ProductHunt with 92 upvotes (as of given URL), Pro subscription model indicates potential MRR in low-mid four figures assuming 500-1k active users.
Market Size
Global productivity software market valued at $96.36 billion in 2022 (Grand View Research), with hybrid tools gaining traction.
