Caleb Hartley — Freelance iOS Engineer
iOS apps, built end to end.
Seven live on the App Store and everything behind them — built solo, from SwiftUI on the front to AWS and Supabase on the back.
Flagship
Chartd
Find, Share & Host Events
A two-sided platform for event discovery and ticketing — live events on a real-time map, in-app ticket sales, business tools, and an AI that surfaces what’s happening around you. Designed, built, and shipped end to end — 53,000+ lines of Swift, solo.
Client
SwiftUI with MapKit & Mapbox — a real-time, clustered event map with rich profiles and live photos.
Payments
Stripe checkout wired to serverless ticketing on AWS Lambda + DynamoDB + API Gateway — per-ticket QR codes and atomic check-in.
Data
Supabase (Postgres + PostGIS) powering geospatial features and large-venue submapping from tagged floor plans.
Content
A Python + LLM pipeline that aggregates events nationwide and keeps the map fresh automatically.
Web
Marketing, business, and ticketing site on Cloudflare Pages + R2 — hand-built, no page builder.
Also on the App Store.
Six more shipped apps, across faith, health, sports, games, and pets.
Versora
Reference
An AI Scripture companion — describe what you’re facing and get verses interpreted for your own tradition of faith.
Biobility
Health & Fitness
Personal health tracking on HealthKit — scoring algorithms for energy, recovery, and metabolism, normalized by age and gender.
Sidewall Society
Sports
A marketplace for custom lacrosse stringing — a 360° live-customization view and a stringer-matching algorithm.
Dopamine Protocol
Health & Fitness
Raise your baseline — randomized daily rewards that keep motivation, energy, and mood high.
Color Crazed
Games
An RGB color-matching game across 1,000 possible colors — how long can you keep the streak?
Tail Time
Lifestyle
A cuter, smarter dog age calculator. Personalizes your dog’s real age by breed, size, and weight across 30+ breeds — purebred, mix, or mystery rescue. Fully offline, no tracking.
All apps
Developer page
Browse everything under my Apple developer profile in one place.
Coming soon.
In App Store review and active TestFlight betas — a look at what’s next.
StarkAI
AI Assistant
A voice-first AI assistant with a cinematic heads-up interface — always-on wake-word speech, multi-provider LLMs with on-device tool-calling, an AR display with live object recognition, HealthKit vitals, and encrypted on-device memory.
BetaXRoads
Social · Dating
A CloudKit dating app where AI runs throughout — compatibility insights, first-date ideas, in-chat referrals to pass a match along to a friend, and a “Dream Match” that reads a reference photo with vision AI to re-rank your feed. StoreKit 2 premium and on-device content moderation built in.
In review
MetaClaw
AI · Wearables
Takes your self-hosted AI mobile through three interfaces: native chat, hands-free voice via ElevenLabs and AirPods, and live vision through Meta Ray-Bans — ask your assistant about whatever you’re looking at. It connects straight to your own OpenClaw bot over Tailscale, so everything stays private and peer-to-peer with no cloud middleman. Your models, your prompts, built in Swift. Distributed as a public beta on TestFlight — the Meta glasses SDK keeps it off the App Store for now.
Public betametaclawapp.com
More than the front end.
Native apps are only half of what ships. Here’s the backend, web, data, and automation behind them.
Backend & Payments
Serverless systems that take money
Production ticketing on AWS Lambda, DynamoDB, and API Gateway, with Stripe checkout, per-ticket QR issuance, and atomic check-in that holds up under real crowds.
Web
Sites, hand-built and deployed
Multi-page product and marketing sites shipped on Cloudflare Pages with R2 storage — chartdapp.com and metaclawapp.com — no drag-and-drop builders.
Data & Geospatial
Maps that know where things are
Postgres and PostGIS with Mapbox for clustering, large-venue submapping, and location features — the geospatial layer most apps never attempt.
Python & Automation
AI pipelines doing real work
A nationwide event-aggregation pipeline — scrapers and LLM processing on scheduled jobs — plus agentic workflows that automate the tedious parts of shipping.
Cross-Platform
Not just iOS when it counts
A full Kotlin / Jetpack Compose port of Chartd for Android is underway — mirroring the iOS feature set across ~25 screen groups, so a product doesn’t have to stay on one platform.
Built with.
About
Hey, I’m Caleb.
I’m a freelance iOS developer and founder who has been designing and shipping App Store apps since 2015. I build the whole product: the SwiftUI front end, the AWS and Supabase backend, the Stripe payments, and the AI in between.
I’m the co-founder and lead engineer of Chartd, a two-sided event platform live in 20 U.S. cities — and I’m currently porting it to Android in Kotlin and Jetpack Compose. Alongside my own products I take on freelance builds end to end, and I’m completing a B.S. in Software Engineering.
Let’s build something.
Native iOS apps built end to end — the interface, the backend, the payments, and the AI that ties them together. Whether it’s an app, a website, or an AI project, reach out for a free consultation.