# PopUp - Sell by Weight ## Docs - [Changelog](https://popup.apps.madvalley.com/docs/changelog.md): What's new in PopUp: Sell by Weight. - [Adding categories](https://popup.apps.madvalley.com/docs/getting-started/adding-categories.md): Organize your products into groups for faster browsing. - [Adding products](https://popup.apps.madvalley.com/docs/getting-started/adding-products.md): Add weight-based and fixed-price products to your catalog. - [Choosing your plan](https://popup.apps.madvalley.com/docs/getting-started/choosing-your-plan.md): Compare Free, Season Pass, and Annual plans. - [Customizing your tiles](https://popup.apps.madvalley.com/docs/getting-started/customizing-your-tile.md): Add artwork and colors to make products easy to identify in POS. - [How PopUp works](https://popup.apps.madvalley.com/docs/getting-started/how-popup-works.md): The full selling flow from setup to checkout. - [Installing](https://popup.apps.madvalley.com/docs/getting-started/installing.md): Add PopUp to your Shopify store and POS setup. - [Onboarding](https://popup.apps.madvalley.com/docs/getting-started/onboarding.md): Walk through the onboarding wizard after installing PopUp for the first time. - [Creating your catalog](https://popup.apps.madvalley.com/docs/getting-started/setting-up.md): Add your first products and get ready for market day. - [Introduction](https://popup.apps.madvalley.com/docs/introduction.md): PopUp: Sell by Weight is a Shopify POS app extension that enables vendors to sell by weight and for items that don't require inventory — directly from their phone. Examples include selling produce at a farmers market or pizza slices at an event. - [Adding a category](https://popup.apps.madvalley.com/docs/managing-categories/adding.md): Create a category to group products in the POS browser. - [Deleting a category](https://popup.apps.madvalley.com/docs/managing-categories/deleting.md): Remove a category from your catalog. - [Editing a category](https://popup.apps.madvalley.com/docs/managing-categories/editing.md): Update a category's name or tile. - [CSV import & export](https://popup.apps.madvalley.com/docs/managing-products/csv-export.md): Bulk-add or update products using a spreadsheet, and export your catalog for record-keeping. - [Deleting a product](https://popup.apps.madvalley.com/docs/managing-products/deleting.md): Permanently remove a product from your catalog. - [Product types](https://popup.apps.madvalley.com/docs/managing-products/product-types.md): Weight and item products — when to use each. - [Setting a product inactive](https://popup.apps.madvalley.com/docs/managing-products/setting-inactive.md): Hide a product from POS without deleting it. - [Tax](https://popup.apps.madvalley.com/docs/managing-products/tax.md): How tax works for weight-based and fixed-price products. - [Applying Discounts](https://popup.apps.madvalley.com/docs/selling-at-market/applying-discounts.md): How to discount PopUp items using Shopify POS. - [No signal](https://popup.apps.madvalley.com/docs/selling-at-market/no-signal.md): What to do if you lose internet connection at market. - [Opening the app](https://popup.apps.madvalley.com/docs/selling-at-market/opening-the-app.md): Get PopUp ready before the first sale of the day. - [Searching](https://popup.apps.madvalley.com/docs/selling-at-market/searching.md): Find a product by name using the search bar. - [Selling Products](https://popup.apps.madvalley.com/docs/selling-at-market/selling-by-weight.md): PopUp adds items to the Shopify POS cart, where you can complete the transaction. - [Manual sync](https://popup.apps.madvalley.com/docs/settings/manual-sync.md): Push your latest catalog changes to the POS tile before market day. - [Tile customization](https://popup.apps.madvalley.com/docs/settings/tile-customization.md): Customize the look of product and category tiles in POS. - [Cancelling](https://popup.apps.madvalley.com/docs/subscription-billing/cancelling.md): What happens when you cancel your PopUp subscription. - [Pausing](https://popup.apps.madvalley.com/docs/subscription-billing/pausing.md): Take a break between seasons without losing your catalog. - [Reactivating](https://popup.apps.madvalley.com/docs/subscription-billing/reactivating.md): Resume your subscription after a pause. - [Uninstalling the app](https://popup.apps.madvalley.com/docs/subscription-billing/uninstalling.md): What happens to your data if you remove PopUp from your Shopify store. - [Upgrading](https://popup.apps.madvalley.com/docs/subscription-billing/upgrading.md): Move from Free to Season Pass or Annual. - [Your data](https://popup.apps.madvalley.com/docs/subscription-billing/your-data.md): How long your products and catalog are kept under each plan and state. - [Getting help](https://popup.apps.madvalley.com/docs/troubleshooting/getting-help.md): How to reach the PopUp support team. - [Paused or expired subscription](https://popup.apps.madvalley.com/docs/troubleshooting/paused-or-expired.md): What to do if your PopUp subscription is paused, expired, or lapsed. - [Prices not updating in POS](https://popup.apps.madvalley.com/docs/troubleshooting/prices-not-updating.md): Fix price changes that aren't appearing in the POS browser. - [Products not showing in POS](https://popup.apps.madvalley.com/docs/troubleshooting/products-not-showing.md): Fix products that are missing from the POS browser. ## OpenAPI Specs - [openapi](https://popup.apps.madvalley.com/docs/api-reference/openapi.json)