ChartSays is a browser-based Six Sigma and SPC toolkit for quality engineers, Black Belts and plant teams. It offers 54 methods, including Cpk, Gage R&R, control charts and DOE, with sample datasets and reports. Upload CSV, XLSX, TSV or TXT files up to 200 MB and get charts, results and a PDF, Word or PPT report. Nothing to install, it runs in the browser only.
Public calculators for Cpk, Gage R&R and control charts need no sign-in, while the full upload workspace needs an account. AI interpretation uses statistical summaries, not raw rows. The interface is in English and Simplified Chinese. See the site's Plans page for current pricing.
Quality engineers and Black Belts still get stuck installing desktop stats software for everyday Cpk, Gage R&R, control charts and DOE. ChartSays was built so those analyses run in the browser.