Custom Auction App Development

Custom mobile auction apps,
branded as your business.

Your bidders are on their phones — and a browser tab is easy to close and forget. A branded iOS and Android app puts your auction on their home screen and buzzes them the moment they're outbid, so they come back and bid again. Built on your platform, published under your name.

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Auction app development means building a native mobile app for an auction business: browsing, bidding, and push notifications, connected to the platform that runs the sales. PHP Pro Bid builds branded iOS and Android apps on the platform's RESTful API and publishes them under your own developer accounts — one codebase, both stores, your name on the listing. For features on the website side, see auction software development.

Every closed tab is a bid you'll never see

Someone finds your auction on the train, means to come back, and never does. They don't get the outbid alert. They lose track of the closing time. Once a bidder swipes away from a browser tab, you have no way to reach them — and that's revenue walking out the door, lot after lot.

A native app closes that gap. It lives on the home screen, sends the alert that pulls people back, and turns one-time browsers into regulars. The platform you already run stays the engine — the app is how you stop losing the phone audience.

Why An App Wins

What a native app does that mobile web can't

Browser bidding gets people in the door. Keeping them — and bringing them back — takes three things only a real, installed app can deliver.

Reach them the second they're outbid

Push notifications are the one thing mobile web simply can't do. The instant a bidder is outbid — or wins a lot — their phone lights up, even with the app shut. That's the nudge that brings them back to bid again before the clock runs out.

Own a spot on their home screen

Your logo sits between their bank and their email, a single tap away — not a bookmark they'll never find again. An app makes you look like the established operation you are, and "is there an app?" stops being a reason to doubt you.

Turn one-time bidders into regulars

When the same people come back week after week — a charity's supporters, a dealer's regulars — an installed, branded app builds the habit. It's loyalty infrastructure for the audience you've already won.

What We Build

What we build into your app

A custom auction app is a serious piece of engineering — a complete, white-label product for iOS and Android, carrying your name, your logo, your colors. Not a stripped-down viewer, but the full bidding experience, built to hold up under a live auction. Here's what comes in the standard build.

Home, browse & categories

Featured listings carousel, full browse, search and filters, and category navigation — with a fixed bottom nav bar for quick access.

Registration & sign-in

Account creation, sign-in, and password recovery, all native in the app. New bidders can join without leaving it.

Members dashboard

A logged-in home for each bidder — their activity, addresses, and account, with an address book for billing and delivery.

Bidding, offers & buy-now

Place bids, make an offer, or buy now — the full set of ways to transact, exactly as they work on your live site.

Current bids & invoices

Bidders track everything they're winning or watching, then browse invoices with payment links to settle up.

Wish list

Save lots to a wish list that syncs across the bidder's devices and account, so nothing gets lost between sessions.

Push notifications

Outbid and auction-won alerts delivered through Firebase, straight to the lock screen — the reason most apps earn their keep.

PayPal payment

Secure checkout with PayPal built in. Other gateways can be added to the build when you need them.

GDPR account deletion

An in-app delete-account option, so your listing meets Apple and Google's store requirements out of the box.

Engineered, not assembled

A custom app is a complex build, and we treat it like one. One modern codebase compiles to two native apps — React and Capacitor at the core, Tailwind for the interface, Google Firebase driving notifications — so a single, properly engineered project ships to both the App Store and Google Play.

One Platform

How your mobile app connects to your auction site

The app isn't a separate system you have to keep in sync. It's a front end for the platform you already run — it talks to your live site through the PHP Pro Bid RESTful API.

That means a bid placed in the app and a bid placed in the browser are the same bid, hitting the same database in real time. Listings, members, invoices — one source of truth, behind both. You manage everything from the same admin you use today, and the app simply reflects it.

Wiring a native app to live auction data — bids landing to the second, no stale lots, no double-spends — is the genuinely hard part of a build like this. It's also the part we've already solved, because we wrote the auction software it connects to. The app is the next step on your platform, not a second system to maintain.

Real-time sync over the API

Bids, lots, and accounts stay current across web and app — no imports, no nightly jobs.

Published under your account

The app goes live on your own Apple and Google developer accounts. It's your listing — we just build and submit it.

Your branding throughout

Your name, logo, and colors on the icon, the splash screen, and every view. Nothing says "PHP Pro Bid" to your bidders.

How It Works

From idea to app on the store

Every app is scoped and quoted individually. Here's the path from your first message to a live listing your bidders can download.

1

Discovery

You tell us about your auction business and what you want the app to do. We agree the modules and the scope.

2

Design

We apply your branding — logo, colors, icon, splash — and map the screens to how your bidders actually move.

3

Build on the API

We build the app against your live platform's RESTful API, so it's wired to your real listings, bids, and members.

4

Publish

We set up the App Store and Google Play listings, configure Firebase, run QA and TestFlight, and submit for review.

5

Maintain

Stores change their rules; we keep the app compliant and working as your platform grows.

FAQ

Questions before you commit

Do I even need a mobile app?
If your bidders are on their phones — and they are — an app is how you keep them. Mobile web lets them place a bid, but it can't notify them when they're outbid or put your brand on their home screen. An app does both, which is why repeat-heavy auctions — charities, dealers, regular sales — see it pay for itself in bids that would otherwise have slipped away.
Can buyers bid from a phone without downloading an app?
Yes — your PHP Pro Bid site is responsive, so anyone can bid in a browser. The difference is what happens after they leave. The app pulls them back with push notifications and one-tap access, where a browser tab just gets closed and forgotten. Web bidding gets them in the door; the app keeps them coming back.
Do you build for both iOS and Android?
Yes. We build one app for both iOS and Android from a single React and Capacitor codebase, then publish it to the Apple App Store and Google Play. You get a native app on both platforms without paying to build two separate ones.
Is the app published under my account and my branding?
Yes. The app carries your name, logo, and colors, and it's published under your own Apple and Google developer accounts — so it lives on your storefront, not ours. We handle the build, the store setup, and submission; you own the listing.
Does it connect to my existing PHP Pro Bid site?
Yes. The app talks to your live site through the PHP Pro Bid RESTful API, so listings, bids, members, and invoices stay in sync with your website in real time. Bid in the app or in the browser — it's one platform behind both.
How long does it take to build?
It depends on scope and how quickly app-store review goes, so we give you a timeline with your quote rather than a fixed number here. The build follows a clear path — discovery, design, build on the API, app-store publishing with QA, then maintenance — and we keep you updated at each step.
How much does a custom auction app cost?
A custom app is a complex build, so it's quoted per project rather than sold off a price list — the figure depends on your branding, the modules you want, and your app-store setup. Tell us what you need and we'll scope it and send a fixed quote before any work begins. There's no charge to enquire, and you can combine it with other custom work on your platform.
Can you build a silent auction mobile app for a charity event?
Yes. A branded app pairs well with charity and fundraising auctions, where a logo on the home screen and outbid push notifications keep donors engaged through the event. See our charity auctions software for how the platform handles silent and fundraising auctions — we build the app on top of it.
Getting Started

Put your auction in their pocket.

A custom app is a complex build, so every one is scoped and quoted to fit your branding, your modules, and your store setup — and you get a fixed price before any work begins, with no surprises. Tell us about your auction and we'll show you what's possible.

Already running on PHP Pro Bid? An app is the natural next step — see where it fits alongside your plan on the pricing page.

Start a mobile app inquiry

Tell us about your auction business and what you'd want the app to do. We'll get back to you as quickly as possible.