TL;DR
506 Sale & Bulk Discounts does not add sale badges to your storefront. Badges such as "Sale", "-25%" or "Save 20%" are rendered by your Shopify theme (or by a separate badge app).
When a discount goes live, the app lowers each variant's price and keeps the original price as the compare-at price. Most themes automatically show their own sale badge and strikethrough pricing whenever the compare-at price is higher than the current price.
The badges on our demo store are built into the demo store's own custom theme. They show what a theme can do with the pricing data the app sets — they are not a feature the app installs on your store.
How sale badges actually work
When a price reduction goes live, the app updates two values on each variant in Shopify:
Price — the new, discounted price.
Compare-at price — the original price, which themes usually display struck through.
Everything visual — the strikethrough, a "Sale" badge, a savings percentage — is your theme reading those two values and deciding how to present them. The app does not inject any badge code, scripts, or styling into your storefront.
Most modern themes (including Shopify's free themes such as Dawn) include sale badges out of the box. You can usually control them in the theme editor, under settings such as "Product cards" or "Badges".
Why the demo store shows badges
Our demo store runs a custom theme built specifically for the demo. That theme renders a "-X%" badge on product cards and a "Save X%" label next to prices whenever a variant's compare-at price is higher than its price — the same signal your own theme uses. The badges you see there are the demo theme's presentation of a live discount, not something the app added to the page.
If your theme supports sale badges, you will get a similar result automatically as soon as a discount is live, styled to match your theme.
How to get sale badges on your store
Run a discount as normal — the app keeps the original price as the compare-at price, which is the signal themes use to show badges.
Check your theme settings in the Shopify theme editor. Most themes have a toggle for sale badges on product cards and product pages.
If your theme does not support badges, a small theme customisation or a dedicated product-badge app can add them — our support team can point you in the right direction.
Selling into the EU/EEA? Shopify can hide compare-at (strikethrough) prices for shoppers in EEA countries because of EU pricing rules. This also hides theme sale badges that depend on the compare-at price, even though the discounted price itself is applied. See the article "Show Compare at Prices in the EU" in this Troubleshooting section.
Common questions
"My discount is live but I don't see a sale badge."
Check any discounted product in your Shopify admin. If the price has dropped and the compare-at price is set, the app has done its job — badge display is controlled by your theme. Review your theme's badge settings, and for EU storefronts see the note above.
"Can the app add badges for me?"
No. The app only changes prices and compare-at prices. The only storefront elements it offers are the optional countdown timer and banner blocks you can add in the theme editor (see the Widgets & Banners section) — sale badges are not one of them.