Control charts that catch drift before your auditor does.

The problem

You maintain SPC charts in Excel — manually calculating control limits with VLOOKUP'd A2 constants, copy-pasting formulas across 50 characteristics, and praying you didn't break a cell reference before the IATF audit. Minitab does it properly but costs $1,851/year per seat.

• Rebuilding X-bar R charts every morning in Excel because your formulas break when someone inserts a row — then spending an hour verifying A2, D3, and D4 constants are correct for each subgroup size
• Monitoring 200+ characteristics across 50 part numbers with no way to see which processes need attention — so you eyeball every chart individually and hope you catch the trend before your customer's SQE does
• Compiling PPAP capability reports by screenshotting Excel charts into Word documents — a two-day exercise every time a customer audit approaches or a new part number qualifies
• Calculating Cpk in Excel and getting a different number than your customer's Minitab output because your sigma estimation method doesn't match — then explaining the discrepancy to a supplier quality engineer who thinks you faked the data
• Paying $1,851/year per seat for Minitab when all you need is control charts and capability analysis — but your QMS auditor won't accept Excel screenshots as evidence of statistical process control

Why switch