Supply-chain depth, merchandising at the core.
Slimstock's Slim4 is a mature supply-chain planning platform, forecasting, replenishment, MEIO and S&OP across retail, wholesale and manufacturing. Tightly leads with the merchandise plan instead: the buy plan, assortment, size and markdown, with an ML forecast and agents that act.
Keep what works. Lose what breaks.
Merchandising-led, not supply-led
Slim4 is deep supply-chain planning. Tightly leads with the merchandise plan: the buy plan, assortment, OTB and markdown, reconciled with the forecast.
Sizes and markdowns, not just stock
Plans at size level and stages markdowns, the merchandising depth a fashion or retail brand actually needs.
Agents that act
The repetitive reconciliation and reorder work is done for you, under your policy, not left as a recommendation.
It shows up in the numbers.
“We used to order stock based on vibes and prayers. Now we order based on data, and the difference in how the business runs is something none of us would go back from.”
Verified outcomes for an enterprise consumer-electronics brand on Tightly.
At scale, a bad buy compounds. Leaders keep under 12% of stock past its window against 22% for the field.
Tightly · State of Retail Inventory 2026
Plan with confidence. One set of numbers, every team, every week.
There's nothing to rip out. Tightly runs on your existing ERP, EDI, e-commerce and POS. Give us 30 minutes and we'll walk you through it.