CalPal

CalPal

The notebook calculator that thinks for you (now with AI).

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Most calculators give you answers but lose the context. CalPal is a literate calculator that combines a text editor with a calculation engine, letting your math tell a story. The standout feature is the BYOK AI Assistant (Gemini). It solves "Blank Page Syndrome"—just ask it to "Draft a travel budget" or "Estimate MVP costs," and it generates the line items instantly for you to tweak. It's 100% free, private (local-only data), and browser-based.
CalPal gallery image
CalPal gallery image
Free
Launch tags:Web App•Productivity•Artificial Intelligence
Launch Team / Built With
NMI Payments
NMI Payments
Don’t Integrate Payments Until You Read This Guide
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What do you think? …

Siddarth Kengadaran
CalPal
Maker
📌
"Hi Product Hunt! 👋 I’m Siddarth, the maker behind CalPal. I built this because I have a "Blank Page" problem. Whenever I try to plan a project or budget, I get stuck between a dumb calculator (no context) and a complex spreadsheet (too much friction). CalPal is a literate calculator. You type notes, and it does the math inline. What makes it different? It has a built-in BYOK (Bring Your Own Key) AI Assistant powered by Gemini. Stuck on a budget? Just ask: "Draft a launch plan for a SaaS app." The AI writes the line items; the calculator tallies the cost. It’s free, private, and runs in your browser. I’d love to hear what you think!"

@siddarth_kengadaran Brilliant solution to Blank Page Syndrome! The thought-to-execution model uniquely positioned between Excel's complexity and calculators' context loss. Timezone coordination, unit conversions, date arithmetic, and Gemini integration create a genuinely novel workflow for distributed teams handling budgets and planning. Asking "Plan a trip to Paris" naturally closes exploratory math. This is the missing piece between static sheets and dumb calculators.

Siddarth Kengadaran
CalPal
Maker

Thanks, @kjosephabraham! You completely nailed the vision—we built this exactly because we felt that gap between 'too simple' calculators and 'too complex' spreadsheets. I'm really glad you caught the timezone and date arithmetic features; they are subtle but huge time-savers for distributed workflows. Appreciate the detailed feedback!