Indie App Studio
Apps that solve real,
everyday problems
Tree City Design builds iOS apps focused on privacy, simplicity, and doing one thing really well.
The Portfolio
Our Apps
From voice journals to workout timers — simple tools built to do one thing well.
AI Workout Timer
Describe a workout in your own words and get a voice-coached interval timer with personality.
Hey Kitchen!
Your hands are covered in flour. Just ask. Converts cups to grams, scales recipes, and sets timers — all by voice.
HomeCOO
Your home management assistant — track tasks, schedules, and household operations in one place.
OutTheDoor
Gentle departure reminders that help elderly loved ones leave on time without the stress.
Voice PDF Extractor
Extract specific pages from any PDF — by tap or by voice. See every page as a visual thumbnail, pull out exactly what you need, and keep your files completely private.
Tech Activity Pact
Family screen time management that builds trust instead of resentment.
Sound Levels
Measure sound levels instantly with four specialized modes. Whether you're in a workplace, nursery, music setting, or everyday environment — get accurate, real-time decibel readings with context.
Voice Crumbs
You didn't fail at journaling. Journaling failed you. Voice Crumbs replaces the blank page with a single gesture — press, speak, done — encrypted on your device, never uploaded anywhere.
WTHooperAI
AI-powered basketball training that adapts to your game and pushes your skills forward.
One person. Many apps.
Tree City Design is a one-person app studio. Every app starts with a problem I noticed in my own life — then I build the simplest possible solution.
No venture funding. No growth hacking. Just useful tools, built with care, that respect your privacy and your time.
From the Blog
Latest Posts
Development stories, app updates, and the occasional deep-dive.
The Home Maintenance Schedule Nobody Gives You at Closing
You just bought a house. The inspector checked 400 things. The realtor handed you keys. And nobody told you what to actually do to keep this thing running.
Why I'm Building 11 Apps as a Solo Developer
A solo indie developer with 11 apps sounds insane. Here's the method behind it — and the tools that make it possible.
Why You Can't Stick With Journaling (And What to Do Instead)
Most people quit journaling within two weeks. The problem isn't discipline — it's that journals were designed for writers, not talkers.
Follow Tree City Design
New app launches, development stories, and the occasional useful tip. No spam.