Privacy policy – MadeCost and LotCost
Last updated: 2026-10-16
This policy covers the two Wix apps published by Thomas Delfini: MadeCost (the cost of what you make) and LotCost (the cost of a lot of goods shared between its pieces).
What the apps read
With your permission, the apps read the products of your Wix Stores catalog and their variants: name, price and the current cost of each variant. LotCost also reads the quantity in stock when your store tracks it. They never read orders, customers or visitors.
What the apps store
MadeCost: your materials, recipes, variant coefficients and settings (hourly rate, target margin, price rounding). LotCost: your lots (name, where you bought them, date, price paid, shipping and other costs, how the cost is shared) and their pieces (the product variant, units, a fixed or typed cost). Both keep a history of the costs they wrote to your store (product and variant identifiers, the cost before and after, and the date).
All of this is saved in data collections that belong to your own Wix site (visible in your site's CMS). The apps do not copy it to any other database or service. No customer data is stored.
What the apps change
Only the cost of your product variants, and only when you press a write button. Prices, names, descriptions, stock and orders are never changed.
Sharing
Your data is not sold or shared with anyone. It is processed by the apps' code, which runs on Wix's infrastructure, and by the Wix APIs of your own site, and nowhere else. The apps send no emails, use no cookies of their own and show no advertising.
Deletion
Your data lives on your site, so you stay in control of it: you can delete the collections of the apps from your site's CMS at any time. If you remove an app, its data collections stay on your site until you delete them, and the app can no longer read or change anything. Ask us at the address below if you want help erasing them.
Who we are
MadeCost and LotCost are published by Thomas Delfini, as an individual, France.