Currently taking new client projects
AppSyntax is a solo studio run by Harrison White. I design, build, and ship full-stack web and iOS apps end-to-end, using SwiftUI, Next.js and Supabase. From a blank Xcode project to live on the App Store, fast. No teams, no handoffs, no telephone game. You talk to the person building your product.
Straightforward packages, with no quote-haggling just to get started. Choose the one that fits, tell me about your project, and I'll come back with scope, timeline, and price. You only pay once we've agreed on what we're building.
Not mockups, not prototypes. These are live products I designed, built, and launched solo — real backends, real payments, real App Store releases.
A car-spotting collection app: photograph rare cars in the wild, identify them with on-device Vision, and build a collection across 500+ models and 5 rarity tiers. Maps, a social feed and badges — designed, built, and shipped end-to-end.
— spotters have joined so far.
cartenthu.com ↗
A polished kawaii idle game built in pure SwiftUI. 25 squishies, 33 skins, daily rewards, a spin wheel, prestige, achievements, offline earnings, synthesized audio and true multi-touch tapping. Live on the App Store and playable free in the browser.
App Store ↗
An e-commerce storefront for a cosmetics business in Bankstown, NSW. Full brand treatment, product pages, and Stripe Checkout — designed and built to brief, shipped live, and selling.
lashcartelcosmetics.com ↗Pick a package, tell me your idea, and you'll have a quote within 24 hours. No payment until we've agreed on scope.
AI scholarship matching · Next.js + Supabase
Founder ↔ investor matching, realtime chat · SwiftUI
AV hire business site & rental shop
Physics merge puzzle · Matter.js + Canvas
32-player realtime multiplayer, shipped & retired
Client e-commerce storefront · Next.js
Map-first carpool matching · SwiftUI + MapKit
3D-printed ring storefront · Stripe
Privacy-first sobriety tracker · live on the App Store
Cozy watercolour app · SwiftUI + PencilKit
AI payslip analyzer — the first product I shipped
Clear, low-drama, and built around you always knowing where things stand. No surprise invoices, no silence for weeks.
We talk through what you're building, who it's for, and what success looks like. Free, no obligation.
I turn it into a clear scope with milestones and a fixed quote. You know exactly what you're getting, and what it costs, before anything starts.
I build in focused milestones with a weekly update, so you see progress instead of silence. Feedback loops are fast.
I deploy, submit to the App Store or launch the site, and hand over everything: code, access, and docs. It's yours.
I'm Harrison White, the founder of AppSyntax. I'm a self-taught developer from New South Wales, Australia, and I've spent the last couple of years doing one thing obsessively: shipping real products.
My path here was backwards. I started building games on Scratch as a kid, moved to Unity, then taught myself HTML/CSS/JS because I wanted a website, then web apps, then native iOS with Swift, because I wanted my ideas on a real phone and couldn't afford to pay anyone to build them. So I learned every layer myself.
That's the whole pitch, really. I'm not a designer who outsources the code, or an engineer who hands off the backend. I do all of it: design, SwiftUI, Next.js, databases, App Store submissions, the 2am "why won't this deploy" debugging. Being genuinely full-stack and solo means there's no handoff and no telephone game. You talk to the person building the thing.
I've shipped products live to the App Store, built real-time multiplayer systems, and run production backends. Now I bring that to client work: if you've got an idea and need someone who can take it all the way from a blank project to something live, that's exactly what I do.
The way I work is simple: ship fast, communicate clearly, work on the whole build, and take responsibility for it.
Pick what you want built, tell me a bit about it, and hit send. I'll reply within 24 hours with how I'd approach it and a quote — no payment until we've agreed on scope.
Thanks! I've got your project details. I'll be in touch at the email you gave me within 24 hours.
Got something you want built — a web app, an iOS app, or both? Tell me what you're making and where it's at. I'll come back with how I'd approach it, a rough timeline, and a quote. The first conversation is always free.