Ceymer Studios — Independent software, built with intention.

A self-taught developer building at the intersection of craft and curiosity.

I'm Corey Miller — the founder and sole developer of Ceymer Studios, an independent Android software company registered in Pennsylvania. I started building entirely on a tablet using cloud IDEs, taught myself to ship, and now publish real apps used by real people on the Play Store.

My work tends to live where useful meets unexpected: a civic engagement tool that explains your representatives, a tutorial app designed for older adults, a timekeeping app based on the hydrogen line frequency. I ship what I'd want to use.

Outside the studio I work at T-Mobile, and outside of that I co-write a cyberpunk world with my writing partner — but more on that below.

PlatformsAndroid · iOS · Web · Cloud

StackTypeScript · React · Firebase

AIGemini · Claude · Custom Tooling

Live Apps3 on Play Store

Always sharpening the tools.

Completed May 2026

Google UX Design Professional Certificate

Issued by Google · Hosted on Coursera

A seven-course program covering the end-to-end UX design process: empathizing with users, defining problems, ideating, wireframing, prototyping, user research, and iterating on designs based on feedback.

The coursework directly shapes the work below. ADIN's redesigned welcome flow came out of UX-driven analysis of where early users were dropping off; its tutorial structure leans on accessibility patterns from the certificate's research modules. Your Leader's single-input architecture — address in, full civic picture out — is a deliberate exercise in reducing cognitive load for non-technical audiences.

User Research Wireframing Prototyping Accessibility Figma

View course on Coursera →

Completed 2026

IBM iOS and Android Mobile App Developer Professional Certificate

Issued by IBM · Hosted on Coursera

A multi-course professional certificate covering cross-platform mobile development from the ground up — Swift and UIKit for iOS, Kotlin and Jetpack Compose for Android, React Native, and the full lifecycle of designing, building, testing, and publishing apps to both the App Store and Google Play.

This certificate landed at exactly the right moment: Ceymer Studios is actively expanding into iOS, starting with a port of ADIN to the App Store. The Swift and Xcode fundamentals from this program are going directly into production.

Swift · UIKit Kotlin React Native Xcode Android Studio App Store · Play Store

View course on Coursera →

The toolkit, at a glance.

Design

Figma
User Research
Wireframing & Prototyping
Accessibility (WCAG)
Information Architecture
Interaction Design

Engineering

React · TypeScript
HTML · CSS
Node.js
Firebase · Firestore
Capacitor (Android · iOS)
Swift · Kotlin
Git · GitHub

AI & Tools

Gemini · Claude APIs
Prompt Engineering
Google AI Studio
Alpaca Trading API
AdMob · Play Console
Firebase Hosting

Selected work, currently live.

→ 001 · Featured

Your Leader

A civic engagement app that turns an address into a complete picture of the people who represent you — federal, state, and local. Built to make civic literacy effortless.

React Capacitor Firebase Gemini Pro Cloudflare Turnstile

View case study →

→ 002

ADIN

An AI-powered tutorial app for older adults — 41 tutorials across 10 categories, plus Ask ADIN: a custom tutorial generated on the spot for any question.

Details →

→ 003

Hydrogen Beat

An experimental timekeeping app based on the hydrogen line frequency. A different way to feel time.

Details →

Live · Internal

EngineClaude Haiku

Modes6 Active

BrokerAlpaca API

Scheduler10m · Mkt Hours

→ 004 · Internal

Ceymer Trading

An AI-powered autonomous trading terminal — Alpaca API, Claude Haiku brain, six trading modes, runs on a 10-minute scheduler during market hours.

Read the build →

Tap to expand

Status

Live · Android & Web

Platform Android · Web

AI Gemini

Billing Stripe · Play

Maps Google Maps

→ 005

Scapeboard

A landscaping business management platform — property mapping, AI-powered design visualization, smart rate forecasting, invoicing, and route planning. Built for the field.

React 19 TypeScript Firebase Gemini AI Google Maps Capacitor Stripe

View case study →

Side channels and creative output.

Cyberpunk · Worldbuilding Hum City

An audio drama. A screenplay. A world.

A cyberpunk universe co-created with writing partner John Vogel — original lore, original characters, a serialized audio drama on YouTube (@synthandsyn), and an active screenplay ("Hum City: The Founders' Fall"). Worldbuilding is the long game; software is the short one.

Explore the world → Watch on YouTube ↗

Open to collaboration.

I'm always interested in working on civic tech, indie tooling, AI products with a clear point of view, and ambitious creative projects. If something I've built resonates, let's talk.

Get in touch →

We build focused, useful software for people who deserve better tools.

A self-taught developer building at the intersection of craft and curiosity.

Always sharpening the tools.

Google UX Design Professional Certificate

IBM iOS and Android Mobile App Developer Professional Certificate

The toolkit, at a glance.

Selected work, currently live.