Stop losing sales to stockouts and cash to overstock. Posto tells you what to reorder and how much, emails the purchase order to your supplier, and works out what each unit really cost. Free for your first supplier.
You found out the body wash was gone when the support emails started. Or you ordered 800 of the thing that sold 40. Shopify can record a purchase order, but it won't tell you how much to buy, and it doesn't update what a product cost when new stock arrives at a different price.
Posto puts all three in one place: what to buy, the order to send, and what each unit really cost once it arrives. It does that one job well, without the setup or the price of an ERP. Every number shows its math.
Coming from Stocky? Here's how to bring your dataFour things that change once your reorders run through Posto.
Every product shows how long its stock will last against how long a new order takes to arrive. Once a few orders have come in, Posto times reorders by each supplier's real delivery history, not their best-case quote.
Orders are sized to what actually sells. Overstocked products and ones with no recent sales are flagged, so you stop buying more of them.
One order per supplier, rounded to their minimums and case packs, emailed with a clean PDF. Replies come back to your store's inbox.
Freight, duty, and fees are spread across each order, and Shopify's cost per item can update when stock arrives. Your margins reflect what every unit really cost, not just what the invoice said.
Posto is a Shopify app for inventory forecasting and purchase orders. It turns your sales history into a reorder plan, then into orders your suppliers can act on.
See how Posto works, step by stepPosto forecasts from your recent sales, with Black Friday and the holiday peak built in. Days you were sold out don't drag the forecast down. Every quantity shows why, and what you'd lose by waiting.
How the reorder math worksPosto drafts one order per supplier, already rounded to their minimums and case packs, with your saved costs filled in. Check the email, send it, and the PDF goes along. Replies land in your store's inbox.
Receive the whole order, or just the part that showed up. Posto updates inventory at the Shopify location you pick. Add freight, duty, and fees, and it works out what each unit really cost.
How landed cost is calculatedLooking for a Stocky alternative? Posto works on any Shopify plan, no POS Pro needed. Bring over suppliers, product costs, and past purchase orders by CSV, from a Stocky export or your own spreadsheet. Stocky's export window closes no earlier than late November, so save your history now.
No supplier list yet? Start from Posto's spreadsheet template.
A purchase order records what you decided. Posto helps you decide, and shows its working so you can trust the answer.
Compare Posto with other Stocky alternativesEvery recommendation shows its working: sales rate, lead time, reorder point, holiday peaks, and the days it left out because you were sold out. Standard inventory math, not AI, and every input is yours to change.
Drafting, emailing, receiving, and landed cost aren't held back for a premium tier. Plans differ only by how many suppliers you order from.
Your bill doesn't grow because your revenue did. Pay monthly through Shopify and cancel anytime, with no contract and no sales call.
Bring in your Stocky files or spreadsheet, and export everything whenever you like, in files you can import back. No more losing years of history when an app goes away.
Every feature is on every plan, including purchase orders, emailing, and landed cost. The only difference is how many suppliers you order from, never how much you sell.
See full pricing1 supplier, up to 50 products
Up to 5 suppliers, unlimited products
Unlimited suppliers and products
30 days free with everything unlocked. Billed through Shopify, monthly or yearly. Cancel anytime.
Founding merchants on what changed once their reordering ran through Posto.
The short answers to what merchants ask most. Every detail lives on the FAQ page.
Read every answerNothing. Every store gets 30 days with everything unlocked and no payment details. Choose a plan and it's billed through Shopify, or choose nothing and you move to Free. Going over a limit never deletes anything or upgrades you on its own.
Yes. Drop in Stocky's purchase order exports and Posto rebuilds your suppliers, what each one sells with its latest cost, and your order history. Spreadsheets work too. Posto previews everything before it saves, and importing never changes your stock.
Posto uses about the last 60 days of your orders, builds in Black Friday and the holiday peak, and leaves out days you were sold out. It's standard inventory math, not AI, and every recommendation shows its breakdown. Forecasts are store-wide, across all your locations.
It reads products, inventory, locations, and each order's date and quantities, never customer details. It only changes your store when you receive a purchase order, and it deletes your data about 48 hours after you uninstall.
Install Posto, bring your suppliers and costs over, and send your first purchase order. 30 days free, everything unlocked, no payment details.
Start your 30-day free trial