SigmaDesk review
Free, browser-based SPC with broad charting, capability, Gage R&R and reporting tools.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
SigmaDesk is browser-based statistical process control software for quality engineers and manufacturing teams. It supports manual entry or pasted measurement data, interactive chart recalculation, and study management through an account. The tool is aimed at solo users, small teams and mid-market groups that need core SPC and Six Sigma analysis without installing desktop software.
The published Free plan costs $0 USD per month and includes variable and attribute control charts, process capability analysis, and browser-based data entry and analysis. Its chart coverage includes I-MR, X̄-R, X̄-S, p, np, c and u charts. Capability work covers Cp, Cpk, Pp and Ppk, while ANOVA-based Gage R&R addresses measurement-system analysis. Run charts, hypothesis tests, Western Electric and specification-limit violation detection, and an integrated recalculating spreadsheet extend the analytical workflow. Fishbone diagrams include AI suggestions, and signed-in users can share dashboards and export PDF reports.
SigmaDesk’s main trade-off is its manual collection model: users enter or paste measurements rather than relying on an automated collection workflow. The browser-based deployment keeps access straightforward, but teams that require local software or offline operation may need another approach. Saving studies and collaborating also depend on signing in. Choose SigmaDesk when free, web-based SPC with a broad set of charts and quality analyses is the priority; consider alternatives built for automated data capture or local deployment when those requirements are central.
SigmaDesk pros and cons
- Where it wins
- Covers variable and attribute control charts across common chart types
- Includes Cp, Cpk, Pp, Ppk and ANOVA-based Gage R&R analysis
- Offers violation detection, dashboards, sharing and PDF report export
- Where it doesn't
- Measurement data must be entered or pasted manually
- Saving studies and collaboration require a signed-in account
- Web-only deployment may not suit offline or local-install workflows
SigmaDesk fact sheet, pricing and score →
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