Now in Beta — Free to use

Understand variation.
Drive improvement.

Contrl turns your operational data into Statistical Process Control charts — the gold standard for spotting signals in noise. Built for teams that need to understand variation and drive improvement.

8 rules
Nelson/Western Electric
7 chart types
XmR, X̄-R, X̄-S, EWMA & more
Zero setup
upload data, start charting

Everything you need. Nothing you don't.

Contrl is purpose-built for operational managers who want clarity, not complexity.

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SPC Charts

X̄ charts with automatically calculated control limits (UCL/LCL). See where your process is in control — and where it isn't.

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Signal Detection

Automatic flagging of run signals (8+ consecutive above/below mean) and trend signals (6+ consecutive moves) in red and orange.

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Process Splits

Click any data point to add a process split. Control limits recalculate for each segment, showing the impact of interventions.

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Excel Upload

Drag and drop your .xlsx or .csv file. Map your date column and any number of measures. Charts generated instantly.

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Suite of Measures

Import multiple KPIs from one file. Switch between measures with a single click using the tabbed interface.

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Built for Any Sector

Designed for operational managers, service teams, and anyone who needs evidence-based improvement tools.

Ready to see your data differently?

Upload your data or explore the demo dataset. No account needed.

Get started free →