A shopper puts a blender in her cart on a retailer's website, then opens the same retailer's app to check a promo code, and there the blender is listed six dollars cheaper. Nothing was on sale a minute ago. No banner announced a flash discount. The price moved because the channel changed, and for a lot of retail apps, that gap isn't a caching bug or an accident. It's the point.
Retailers have built two separate storefronts under one name. One is a website that anyone can browse anonymously; the other, an app that requires an account, a login, and usually a set of permissions handed over at install. Those are legally and technically distinct sales channels. That means a retailer can price them differently, the way it already prices by loyalty tier, by zip code, or by whether a shopper arrived through a coupon email. The app is just the newest version of that old game, dressed up as a convenience.
Once you see the mechanism, it's straightforward. App-only prices, app-only coupons, and "clip this deal in the app" promotions amount to a second price list rather than a marketing flourish bolted onto a single one. That second list is generated by a separate pricing engine with access to something the open website lacks: a logged-in, trackable identity attached to every price it shows. The website has to price for an anonymous crowd; the app can price for an individual.
That individual has already paid for the discount, in data instead of dollars.
Installing a retail app means granting location access, notification permissions, and a persistent account. That account logs browsing behavior, purchase history, and how long someone lingers on a product page before buying or bailing. Retailers use that data to run tighter promotions: targeting discounts at shoppers price-sensitive enough to abandon a cart, and holding firm prices for those who show no hesitation. A lower app price is often the retailer's way of paying for data and attention it couldn't get any other way. The open web now blocks a lot of the tracking that used to make that data cheap to collect through a browser alone.
Retailers profit from this arrangement twice over.
First through the sale itself. Second through everything the app enables afterward: push notifications that drive repeat visits without any ad spend, a retail media business that sells shelf space and search placement inside the app to other brands, and a first-party data set that has only become more valuable as advertising identifiers on the open web keep getting restricted. An app user is worth more to the retailer over a year than a single website transaction. That's why it makes financial sense to discount the entry price just to get someone to install.
Shoppers who never download the app effectively subsidize the ones who do, because without the benefit of the data and repeat-visit stickiness an app provides, the website has to stay profitable on its own margins. So its prices tend to sit higher, or its discounts stay shallower.
Nobody frames it that way in a press release. It shows up instead as a simple line: better deals in the app.
The incentive is obvious. The app now drives more loyal, more trackable, more monetizable customers than the browser does, so a retailer builds that experience to win and lets the website quietly lag behind. Search on the website gets clunkier. Filters go missing. Load times stretch. Meanwhile the app gets the polish, the exclusive early access to sales, and the friendliest checkout flow. Every dollar spent improving it comes back through data and repeat purchases the website version cannot generate.
Some of this now runs into regulatory friction. Price discrimination law in the United States has long tolerated differences based on volume, membership, or negotiated business terms, but it grows murkier when the difference is based on which piece of software a consumer happens to be using, especially if that consumer has no easy way to know a cheaper option exists elsewhere on the same retailer's platform. State attorneys general and consumer protection agencies have begun asking harder questions about dark patterns in app design, and channel-based pricing sits close enough to that territory to draw scrutiny.
For the arrangement to change, something would have to make the price gap costly rather than profitable. That could be a regulator requiring retailers to disclose when a listed price is channel-specific rather than universal. It could be a competitor advertising "one price everywhere" as a trust signal, forcing others to match it or explain why they won't. Or it could simply be shoppers learning to price-check across channels the way they already price-check across stores, which erodes the advantage without anyone passing a law at all.
None of that has happened yet, and there is no clear sign it will happen soon.
Retailers built this system because the data trade-off favors them, and because most shoppers have not organized around it the way they once organized around comparing prices between stores. Retail has spent a decade training people to check an app before they buy anything. The open question is whether it will ever have a reason to stop giving the app the better price.