Part of the IsometricQM Platform

Free Beta — No Login Required

Professional SPC,
right in your browser

IsometricSPC gives manufacturing and quality teams free, instant access to statistical process control — I-MR, X̅-R, X̅-S, p-Chart, c-Chart, full capability analysis, and Minitab-style sixpack exports. No install. No subscription. No data leaves your machine.

▶ Now on Beta v0.02 — light & dark mode, per-chart exports, manual entry on all charts, and more

▶ I-MR Chart

▶ X̅-R & X̅-S Charts

▶ p-Chart & c-Chart

▶ Cp / Cpk / Pp / Ppk

▶ Capability Sixpack Export

✦ Light & Dark Mode

✦ Per-Chart PNG Export

✦ Manual Entry — All Charts

✦ Subgroup Capability

✦ Control Limit Labels on Exports

▸ Launch IsometricSPC Talk to an Expert ↗

6 Chart Types

v0.02 Beta Version

100% Browser-based

$0 Forever Free

PNG Export Any Chart

What's new in v0.02

New in Beta v0.02

🌙

Light & Dark Mode

Switch between light and dark themes in both the landing page and the app. Your preference saves automatically.

📥

Per-Chart PNG Export

Every chart now has its own Export PNG button — branded with your feature name, spec limits, and date.

✏️

Manual Entry — All Charts

Row-by-row manual data entry is now available on all chart types, not just I-MR.

📊

Subgroup Capability

Capability analysis now supports subgrouped data with X̅-R based sigma estimation alongside standard I-MR.

🏷️

Limit Labels on Exports

UCL, LCL, USL, and LSL values are labeled directly on every exported PNG — no guessing which line is which.

📋

Release Notes

Click the version tag inside the app to see what's changed. Active development — more features coming regularly.

How to use IsometricSPC

01 — Select

Choose your chart type

Pick from the sidebar — I-MR for individuals, X̅-R or X̅-S for subgroups, p or c for attribute data, or jump to Capability.

02 — Enter

Paste or type your data

Copy directly from Excel and paste, or use manual row entry. Enter your USL, LSL, and target for full capability reporting.

03 — Analyze

Generate your charts

Click Generate. Control limits calculate automatically using standard SPC constants. Out-of-control points flag instantly in red.

04 — Export

Download your reports

Export any chart as a branded PNG, or download the full Capability Sixpack — print-ready for PPAP packages and customer submittals.

Professional SPC, right in your browser

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Professional SPC,
right in your browser