You’ve got Square. You’ve got the card reader, maybe the loyalty programme, possibly even the fancy receipt printer that makes you feel extremely professional. So why on earth would you need your own app?
Great question. And it’s one we hear all the time from Square businesses who are perfectly happy with the tools they’ve got – until they discover just how much more is possible. Whether you’re a barbershop, a beauty salon, a personal trainer, or a boutique retail store, pairing a custom-branded mobile app with your Square setup is the kind of glow-up that pays for itself – fast.
Let’s get into it.
What exactly is a “Square app” and how does it work?
We’re not talking about building something that lives inside Square’s App Marketplace (though, fun fact, Square’s partner ecosystem just hit almost 1,000 integrations in 2026 — the platform is absolutely booming). We’re talking about a branded mobile app that your customers download, that syncs beautifully with your Square account.
Think: your logo on their home screen. Push notifications going straight to their pocket. Bookings, loyalty points, and purchase history — all in one place, all under your brand name. It’s not sci-fi. And you don’t need to remortgage your house to get one.
AppBuild.diy lets small businesses build their own app around their existing Square setup — no coding, no tech degree, no caffeine-fuelled all-nighters (we can’t promise you won’t still drink the coffee, but it won’t be required).
Why isn’t Square’s built-in loyalty enough?
Square Loyalty is genuinely solid. Customers earn points, you retain them – great. But here’s the gap: Square’s loyalty tools live inside Square’s ecosystem. Your customer has to remember to scan, remember to check their points, and remember that you even have a loyalty programme.
Your own app flips that completely. With a custom-branded app:
- Your business lives on their phone — permanently visible, not buried in their wallet
- You can send push notifications — announce a last-minute opening, a flash sale, or just a cheeky “We miss you” message when someone hasn’t booked in a while
- Loyalty feels yours, not generic — and that matters for brand perception more than most people realise
“We always say that loyalty isn’t just about points – it’s about presence. If a customer can’t see your brand, they’re not thinking about you. A branded app puts you front and centre on the one device they check a hundred times a day.”
— Becky, AppBuild.diy
The numbers back this up. Merchants using Square report a 25% sales uplift post-adoption when they combine Square’s payment tools with complementary customer-facing technology — and a branded app is one of the highest-impact moves in that stack.
Is this just for salons and barbershops, or can any Square business use it?
Short answer: if you use Square, there’s almost certainly a version of this that works for your business.
Square Apps from AppBuild.diy are popular across:
- Hair and beauty salons — online booking, loyalty cards, appointment reminders
- Barbershops — showcase your team, let customers choose their barber, fill last-minute slots instantly
- Personal trainers and gyms — class schedules, membership management, motivational push notifications (those actually work, apparently)
- Retail and boutiques — product browsing, new arrival alerts, in-app exclusive offers
- Coffee shops — loyalty stamps, pre-order, “your usual?” vibes (more on this in our coffee shop app post, but the crossover is real)
“What’s exciting about Square businesses is that they’re already set up to move fast — they’ve invested in the tools, they understand their customers, they just need the front-end to match. A branded app is that missing piece.”
— Ian, AppBuild.diy
If you’re already using Square Appointments (which, by the way, has had over 488 million appointments booked through its platform), adding a branded app on top means your customers can book directly from your app rather than hunting through Google. That’s a big deal for repeat business.
What’s the big trend making Square apps even more valuable in 2026?
Two words: AI personalisation.
This year, Square rolled out major AI upgrades – including tools that let businesses merge their own sales data with real-world insights like local events, weather patterns, and neighbourhood trends. Translation: if there’s a big event in your town next weekend, Square AI can help you know about it and plan your staffing and stock accordingly.
But here’s where your own app takes it further. When customers interact with your branded app – booking, browsing, checking loyalty points — you’re building a direct data relationship with them. Not just through Square’s lens, but your own. That’s an audience you own, not rent.
58% of small businesses now use generative AI in some form, up from just 23% in 2023. The businesses that will win in the next few years aren’t necessarily the ones with the biggest budgets — they’re the ones with the best customer relationships. And you can’t build those on Square alone.
“The tech landscape has shifted massively, but the fundamentals haven’t: people want to feel known. A custom app lets you deliver that feeling at scale — personalised offers, tailored notifications, a booking experience that feels like it was built just for them.”
— David, AppBuild.diy
How hard is it to actually build a Square mobile app?
This is where people usually brace themselves for a painful answer. Surprise: it’s not that bad.
With AppBuild.diy, you’re not building from scratch. You’re customising. Pick your colours, upload your logo, choose your features (booking, loyalty, push notifications, menus, galleries — the works), and connect it to your Square account. The technical bit happens in the background. You get a real, App Store-ready app without writing a single line of code.
Most Square businesses are up and running in a matter of days, not months. And because it’s built around your existing Square setup, the learning curve for you is minimal — and the learning curve for your customers is basically zero. They download it, they use it, they love it.
What features should a Square business prioritise in their app?
Every business is different, but here’s the shortlist that tends to move the needle most:
1. Online booking — If you’re on Square Appointments, this is a no-brainer. Let customers book directly from your app, get reminders, and reschedule without a phone call. Everyone wins.
2. Loyalty stamp card — Go digital. It doesn’t get lost. It doesn’t get left at home. And it’s infinitely more satisfying when it’s on your phone with a satisfying little tap animation.
3. Push notifications — This is your direct line. Use it wisely (and don’t spam people — nobody wants 14 notifications about a 10% discount on a Tuesday).
4. In-app offers and promotions — Reward your most engaged customers with app-exclusive deals. It drives downloads and loyalty at the same time.
5. Your own branded experience — Seriously. Your name. Your colours. Your vibe. On someone’s phone. It matters more than you think.
FAQ: Square Mobile Apps and What You’re Probably Wondering
Does my app replace Square or work alongside it? Alongside. Your Square account stays exactly as it is — your app just gives customers a better, branded way to interact with your business. Think of it as the front door to the shop Square is already running behind the scenes.
Will my existing Square customer data sync? Yes — your booking availability, loyalty programme, and key data points connect through your Square integration. No double entry, no chaos.
Do I need an Apple Developer account or Google Play account? AppBuild.diy handles the submission process, so you don’t need to navigate the App Store or Google Play setup yourself. We sort the tech, you get on with running your business.
How much does it cost compared to custom app development? Custom app development for a fully-featured business app can run into tens of thousands of pounds. AppBuild.diy brings that down to a monthly subscription that most small businesses can afford without breaking a sweat — or a spreadsheet.
What if I’m not very techy? Honestly? That’s most of our customers. The whole point is that you shouldn’t need to be techy. If you can update your Instagram, you can build your app.
Can I add my Square menu or product catalogue to the app? Yes — whether you’re a coffee shop, a retailer, or a service-based business, you can showcase what you offer and even take orders or bookings through the app directly.
Ready to take your Square business to the next level?
Square has built something brilliant for small businesses – and a branded Square mobile app is the upgrade that puts your customer relationship fully in your hands. Your logo on their screen. Your offers in their pocket. Your loyalty programme actually getting used.
If you’re already using Square and you’ve been wondering whether an app makes sense, the honest answer is: yes. And it’s easier than you think to get started.
Last Updated on May 27, 2026 by Becky Halls
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