Open means transparent.
Local means secure.
Qprovement is the modular toolbox for process improvement and innovation — Six Sigma (DMAIC, DMADV), 8D problem solving and TRIZ — running entirely in your browser. No server, no uploads, no dependency on third parties. Every line of code is open, every calculation stays on your machine.
Transparency, not black boxes
Every formula, every algorithm is open. You don't have to trust proprietary software — read the code, verify the logic, have it audited.
Your data stays with you
All calculations run exclusively in the browser. No server uploads, no cloud services. Your measurement data, quality reports and analyses never leave your machine.
Beyond DMAIC.
Four methodologies, one toolbox.
Qprovement is no longer just Six Sigma. Pick the right framework for the job — and combine tools across methods without leaving your browser.
Six Sigma improvement
Define, Measure, Analyze, Improve, Control — the classic Six Sigma cycle for systematically improving existing processes.
Design for Six Sigma
Define, Measure, Analyze, Design, Verify — develop new products and processes that are robust by design.
Eight Disciplines
Team-based problem-solving — from immediate containment to root cause to recognition. The automotive industry standard.
Inventive problem solving
When the contradiction blocks you, TRIZ resolves it. The 9-Windows operator, the Contradiction Matrix and the four separation principles — formalized creativity instead of brainstorming.
Professional statistics.
No black box.
Modular statistics tools built on pure JavaScript and HTML. No build system, no backend, no dependencies.
Zero Setup
Open an HTML file in your browser — done. No installation, no server, no npm.
Modular & extensible
Each module is self-contained — add your own or customize existing ones.
Verifiable calculations
Every algorithm is open source and verifiable against textbooks.
Free forever
Open source under AGPL-3.0 license. No subscription, no freemium, no vendor lock-in.
// Qprovement — every line verifiable // Source: github.com/dmaic-io import { cpk, normalTest } from './modules'; const data = [12.1, 12.4, 11.9, 12.2, ...]; const spec = { LSL: 11.5, USL: 12.5 }; // Process capability — transparently computed const result = cpk(data, spec); // → { Cpk: 1.33, Cp: 1.45 } // No API call. No upload. No server. // Everything happens here — in your browser. console.log("Process capable ✓");
A growing toolkit, organized by method.
Each module is self-contained, open source and verifiable. Pick what you need from any methodology — they all share the same data backbone.
Six Sigma improvement toolkit
Define → Measure → Analyze → Improve → Control
Project Definition
Project charter, SIPOC, stakeholder analysis, VOC/CTQ — structurally define the problem before measuring.
DEFINEDescriptive Statistics
Central tendency, dispersion, histograms, box plots and distribution analysis.
MEASUREMeasurement System Analysis
Gage R&R, linearity, stability per AIAG standard.
MEASUREProcess Capability
Cp, Cpk, Pp, Ppk with normality tests and graphical output.
ANALYZEHypothesis Tests
t-tests, ANOVA, Chi², regression — make statistically sound decisions.
ANALYZEDesign of Experiments (DOE)
Factorial designs, response surface methodology and interaction analysis.
IMPROVEControl Charts (SPC)
X̄-R, X̄-S, I-MR, p, np, c, u charts with automatic rule violation detection.
CONTROLInventive problem solving
Resolve contradictions instead of compromising
Contradiction Matrix
39 × 39 Altshuller matrix mapping technical contradictions to the 40 inventive principles — interactive lookup with explanations and examples.
TRIZ9 Windows (System Operator)
Think across system levels and time: sub-system, system, super-system × past, present, future. Break out of fixed framing and see the full problem context.
TRIZPhysical Contradiction
When the same parameter has to take opposite values, the four separation principles (space, time, condition, system level) point the way to a resolution.
TRIZ8D problem-solving · DMADV design
Switch cycles per project — same modules, different framing
8D Eight Disciplines
D0–D8: prepare, team, problem description, containment, root cause, corrective action, implementation, prevention, recognition. With Is-/Is-Not, 5-Why, fishbone — all attached to the right discipline.
8DDMADV Design for Six Sigma
Define → Measure → Analyze → Design → Verify. For new products and processes — concept selection, robust design, capability verification before launch.
DMADVBuilt for people who
make processes better.
Professional statistics with no barriers to entry and no data privacy risks.
Quality Engineers
SPC, MSA and process capability — usable even in environments with the strictest IT security policies, since no data leaves the network.
Belts & Innovators
Green Belt to Master Black Belt, plus TRIZ practitioners — DMAIC, DMADV, 8D and TRIZ all in one place. Open code enables deep understanding of the methods.
Universities & Education
Free, no installation, instantly usable in courses. Reading the code = understanding the statistics.
Trust through openness and control
GDPR by Design
No data leaves the browser. No logs, no tracking.
Audit-ready
Open algorithms — ideal for regulated industries like automotive and pharma.
Cross-platform
Chrome, Firefox, Safari, Edge — any operating system.
Air-gap capable
Fully offline. Perfect for secured production networks.
Local doesn't mean
isolated.
Your process data already lives in-house — in SharePoint, in SAP, in internal databases. Qprovement picks it up right there. Inside your own network, with no detour through third parties.
- SharePoint
- SAP
- Internal databases
- On-premise deployment
Tailored to your system landscape. Details in conversation.
The app stays free and open — Enterprise adds to it, it replaces nothing.
Frequently asked questions
Is Qprovement really free?
Yes. Qprovement is open source under the AGPL-3.0 license and free forever — no subscription, no freemium tier, no vendor lock-in.
Does my data leave my computer?
No. Every calculation runs locally in your browser. No measurement data, report or analysis is ever uploaded — Qprovement is GDPR-compliant by design.
Do I need to install anything or create an account?
No. There is no installation, no server and no registration. Open the app in any modern browser and start immediately.
Can I use Qprovement offline or in an air-gapped network?
Yes. The app is fully offline-capable and can be deployed in high-security, air-gapped environments.
Which improvement methodologies are supported?
DMAIC and DMADV (Six Sigma), 8D problem solving and TRIZ — all in one toolbox, switchable per project.
Which Six Sigma tools are included?
Descriptive statistics, Measurement System Analysis (Gage R&R), process capability (Cp/Cpk/Pp/Ppk), hypothesis tests, Design of Experiments and control charts (SPC), plus Define-phase tools and the TRIZ toolkit.
Which browsers and operating systems does it run on?
Any modern browser — Chrome, Firefox, Safari or Edge — on any operating system.
Statistics you can
actually trust.
Open Qprovement and start your first analysis — no registration, no upload, no cost. Or read the source code first. Both are just one click away.