Sheet Insights turns any Excel or CSV file into a clean, interactive analytics workspace without sending your data anywhere. Everything runs locally in your browser: schema detection, an executive summary, trends with forecasting, statistics, data cleaning and a smart assistant. Your file never leaves your device.\n\nDrop a spreadsheet and in seconds you get:\n\n\u2022 An executive summary with KPIs, gauges and automatic highlights\n\u2022 Trends with month/quarter/year granularity, segment filters and a live what-if forecast simulator\n\u2022 A full Statistics center: descriptive stats, distributions, percentiles, outliers, correlation matrix, relationships (scatter + fit), frequencies, group summaries and Pareto (80/20) analysis\n\u2022 Data quality checks and one-click cleaning (deduplicate, trim, fuzzy-merge, fill blanks) with reusable cleaning recipes\n\u2022 A smart, rule-based assistant that answers questions about your columns\n\u2022 Cross-filtering, saved views and alert rules\n\u2022 Export to Excel (.xlsx), a self-contained interactive HTML dashboard, CSV and JSON\n\nBuilt for people who live in spreadsheets but don't want to build pivot tables. Deterministic by design \u2014 it never invents numbers, and it works fully offline.\n\nPrefer to try before you buy? The full app also runs free in your web browser at https://extraordinary-wisp-71ed01.netlify.app/ \u2014 get it here for the installed, offline experience with automatic updates and no browser needed.\n\nPrivacy first: no account, no servers, no tracking. Your data is processed only on your device.