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.
A single, high-converting page to get your idea online fast.
A real, working web app for your core idea, not a prototype.
One build, both app stores, from a single codebase.
Web + mobile + backend, designed and shipped as one product.
A few things I've designed, built, and shipped, solo and end to end. Real products, real backends, real App Store launches.
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, all designed, built, and shipped end-to-end with SwiftUI and Supabase.
A real-time multiplayer game with a 32-player Battle Royale mode, friend circles, 184+ achievements, global leaderboards, a weekly skin shop, 1v1 challenges, and Pro subscriptions, backed by a full Next.js admin panel. Shipped to the App Store and run live in production. Proof I can build hard, real-time systems, not just CRUD apps. (Now retired.)
A polished Cookie Clicker–style incremental game built in pure SwiftUI from a single codebase, running on iPhone, iPad and macOS (Mac Catalyst). Custom Canvas-drawn sprites, light/dark/system theming, prestige, achievements, offline earnings, synthesized audio and true multi-touch tapping. Designed and built end-to-end.
A cost-sharing carpool app that matches riders and drivers heading the same way on a live map. Request a seat, get approved by the driver, then sort pickup and the cost split in chat. Full profiles, two-way ratings and trust flows, built native with SwiftUI and MapKit. Backed by a designed Postgres + PostGIS geo-matching schema, architected to drop onto Supabase. Designed and built end-to-end.
A two-sided matching app connecting founders with investors through swipeable pitch decks, with a real-time chat that unlocks the moment both sides opt in. SwiftUI front-end on Supabase realtime and storage.
A modern online storefront built for the Gruxey team, with a clean, fast shopping experience. A real paid client project, designed and built to brief.
A sleek website for a Parkes audio-visual business, covering its services, branding and contact, and built to turn visitors into enquiries. Designed and built end to end.
An online store for custom 3D-printed rings, with Stripe checkout built in. Browse, customise and buy on a clean storefront I designed and built end to end.
A private, secular sobriety tracker for people who want accountability without the religious overtones. Streak tracking, milestones, mood journaling, and trigger-pattern analysis, with data kept private by default. Live on the App Store.
A pencil-first drawing and painting app with a layered canvas, a gallery, and a social feed. Built end-to-end with SwiftUI, PencilKit, and Supabase. A showcase of polished, gesture-driven native UI.
A personal finance app with income/expense tracking and an AI payslip analyzer that automatically broke down tax, super, and take-home pay. The first product I shipped, and the one that proved I could take something all the way out the door.
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. If that's the kind of person you want on your product, let's talk.
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, with 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, like 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.
