XL Delta: Excel Formula Guide

Browse Excel formulas with plain-English explanations and worked examples. Save your favorites. Optionally connect your own AI key to generate templates.

XL Delta is a fast, focused reference app for Excel and finance formulas — built for students, analysts, and professionals who need answers immediately.

Search and explore essential Excel, finance, valuation, investing, and modeling formulas without clutter, ads, or distractions. Whether you're debugging a spreadsheet, studying for an exam, or building a model, XL Delta helps you find the right formula fast.

WHAT YOU CAN DO WITH XL DELTA

• Look up common Excel formulas and functions
• Reference finance and valuation formulas (IRR, NPV, loan math, and more)
• Understand how formulas work and when to use them
• Save your favorites for quick access later
• Use it as a lightweight companion alongside Excel

OPTIONAL AI TEMPLATE GENERATION

XL Delta also includes an optional AI-powered template generator. Bring your own API key from Anthropic (Claude) or OpenAI (ChatGPT), describe what you need in plain English, and get a working Excel template you can export and use immediately. Templates generated by AI may need review for accuracy before relying on them for important decisions. Your prompts are sent directly to your chosen AI provider using your own key — XL Delta does not see, store, or process them.

DESIGNED FOR REAL USERS

XL Delta is designed to be simple, fast, and practical. No tutorials to sit through — just the formulas you need when you need them. No accounts. No ads. No subscriptions.

PERFECT FOR

• Finance and accounting students
• Analysts and modelers
• Excel users at any skill level
• Anyone who wants quick, reliable formula references