What white label means here
The app is published under your identity, styled to match your auction website, and listed in the App Store and Google Play as yours. Bidders download your app, not ours. There is no other auction house's inventory inside it.
Functionally it carries what the website carries: browse the catalogue, register, bid in timed and live auctions, watch lots, receive push notifications when an auction opens, when a watched lot approaches its close, and when a bid is outbid.
Same platform underneath
The app talks to the same public API and the same bid engine as your website. A bid from the app and a bid from a desktop browser are the same bid, arriving in the same queue, reflected on every screen at once. Nothing is synchronised later or reconciled overnight.
Where it earns its place
Push notification is the honest answer. Email gets filtered and websites get forgotten; a notification arrives at the moment a lot is closing. For auction houses with a returning bidder base, the app tends to lift participation in the final minutes more than any other single change.
AMPERSAND, in wine, run the app alongside a hybrid format — a timed auction with Buy Now, opening into a live auction with a video stream.