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Custom Web, Mobile & Desktop App Development

Got an idea for a web, mobile, or desktop app? Let's make it real.

We make it easy to turn your app idea into a real, working product. Whether it’s fully sketched out or just a rough concept, we’ll help you shape the details and build something that feels just right—for your business, your users, and your budget. No confusing jargon, no runaway costs—just a clear plan and great results.

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Our Services

Web Apps & PWAs

Interactive platforms—right in the browser
We build custom web apps your users can access instantly—no installs, no friction. Whether it’s a portal, dashboard, or booking system, it runs smoothly in any modern browser, and yes—it’s SEO-friendly and ready to scale.

Mobile Apps (iOS & Android)

One build. Two platforms. No extra fluff.
We create mobile apps that run beautifully on both iOS and Android—without doubling your development cost. Great for businesses with returning users who want quick, reliable access from their phone.

Hosting & Maintenance

Want someone to keep things ticking post-launch?
For all our services, we offer optional ongoing support. We can manage your hosting, help with small tweaks, post-launch updates, or even content changes like adding blog posts or product pages. No fuss, just solid support.

Desktop Apps

Bring your app to the big screen
Need an app your team or customers can install on their computers? We build desktop-ready software that feels modern and runs great—ideal for internal tools or more immersive workflows.
A one-man dev shop that actually gives a damn.

Hi, I’m Vince — founder, developer, and your main point of contact here at AppSites. Since 2022 I’ve been building custom web and mobile apps for small businesses, startups, and solo founders. I started AppSites because I love building things that work, and because I saw how bloated and impersonal traditional agencies can be.

Unlike big agencies, there’s no middle layer here. When you get in touch, you’re talking to the person who’s actually building your app. That means faster communication, fewer misunderstandings, and a smoother, more personal experience from start to finish.

I mostly work with small to medium-sized businesses — people who have a great idea, or a simple tool in mind that will improve their customer experience, boost conversions, or just make life a bit easier. Maybe it’s a booking system. A customer portal. A cleaner way to manage repeat orders. Whatever it is, you don’t need a six-figure agency to make it happen.

With Appsites, you’ll never be left in the dark. You’ll never be upsold something you don’t need. And you’ll always know exactly what you're paying for.

Let’s build something great, together.

Vince Maina
Founder, Appsites

Case studies

iPad showing spike.news website
Web App Development

Custom Travel CRM

Our custom web design solution helped a small travel agency in Newcastle, manage their client enquiries, quotes, and bookings - as well as staff performance and shop finances.
Read more

Frequently Asked Questions

Is this just one guy? Can he really handle my whole app?
Yep—just one, and that’s the point. You’re not dealing with layers of middlemen or a junior dev behind the scenes. You’re working directly with the person building your app, start to finish. That means better communication, faster turnaround, and nothing lost in translation.
What if I need something more complex—like payments, logins, integrations?
No problem. I’ve built apps with user accounts, payment systems, third-party integrations, and more. And if your project needs something super specialised, I’ve got a trusted network of developers and specialists I can call on.
What if I'm not technical at all?
Totally fine. Most of my clients aren’t. I’ll guide you through the whole process in plain English, help shape your idea, and keep you in the loop without drowning you in jargon.
Will I be locked in or stuck relying on you forever?
Not at all. Once your app is finished, you own everything—the code, the project files, the deployment details. You can run it independently, hand it off to your in-house team, or keep working with me for ongoing support. Your choice.
Why wouldn't I just use a bigger agency?
You could—but you'd likely pay more, wait longer, and spend more time explaining your vision to people who aren't building the app themselves. At AppSites, you get a high-quality product, built with the same tech as the big guys, but with less friction and a more personal touch.
How much is this going to cost me?
Every project is different, but one thing stays the same: transparent, fixed pricing. No hourly rates. No hidden fees. You’ll get a clear quote at the start, and as long as we stay within the agreed scope, that price won’t change.
Can I test the app before it's finished?
Yes! You’ll get to see working versions of your app throughout development—not just a final reveal at the end. That way, you can give feedback early and often, and there are no nasty surprises.
Will it work on all devices?
Definitely. Whether we’re building a web app, mobile app, or desktop app, it will be tested on all relevant screen sizes and devices. You’ll get a product that looks great and works smoothly everywhere it needs to.
How secure will my app be?
Security is baked in from the start. We follow modern best practices for secure coding, data handling, and authentication. If your app has sensitive data or specific security needs, we’ll cover that in the planning phase.
How do payments work?
It’s 50% upfront, 50% on completion. That way, you know I’m committed—and you stay in control. No extra fees unless the scope changes, and if it does, you’ll get a clear, revised quote before anything moves forward.
What happens if I change my mind halfway through?
Small tweaks are expected and welcomed—that’s why we keep you involved throughout. If there’s a bigger change that shifts the scope significantly, we’ll pause, chat, and agree on a revised plan and quote before continuing.

Start Building

Get a guided tour through our services, and find out how you and your team can change the way you work, forever.