Supplier Cost-Increase Tracker offline · your data never leaves this page
Paste your purchase history. See which supplier costs rose, since when, what that costs you a year — and what each price would need to be to put your margin back.
1 · Purchase history (date, supplier, item, qty, unit, total_paid)
2 · What you sell — optional (product, price, units_sold_per_month, ingredients in base units)
Rows refused — fix these, nothing was guessed
Annualized cost creep
—
sum of every increase, at real volumes
Worst supplier
—
Worst item
—
Margins down 3+ points
—
products, vs your baseline
Provisional warnings
—
moves too new to confirm
Rows read / refused
—
refused rows listed above
Suppliers, by annual damage
Supplier
Annual impact
Items up
Items down
Steps found
Items — click a row to see the purchases behind it
Item
Supplier
Trend
Baseline
Now
Change
Steps (dated to the first purchase at the new level)
Annual impact
Purchases
Date
Qty
Unit
Total paid
Cost per base unit
Margins — and the two honest ways to hold them
Product
Price
Cost then
Cost now
Margin then
Margin now
Drop
Hold the dollars
Hold the rate
“Hold the dollars” adds the cost increase to the price — same profit per unit. “Hold the rate” keeps the margin percentage — price = cost ÷ (1 − margin). They are different answers to different questions; pick on purpose.
Everything runs in this file, offline. No account, no upload, no tracking. Every number is reproducible from your raw rows — click any item. Built on camera for “Build It With AI”, Episode 6. Sample data is fictional (Marigold Bakehouse).