Howdy, I'm John Marc
An indie iOS developer building thoughtful apps.
After nearly 13 years at Apple—working on App Store teams, privacy initiatives, and the visionOS launch (iOS apps on Vision Pro and visionOS Widgets)—I left to build the apps I always wanted to create. I'm passionate about software that respects your privacy, leverages machine learning in meaningful ways, and does one thing exceptionally well.
You'll find apps I'm building under my personal header (ioloro) here. Beyond these apps, I also build Dewy Golf.
I believe the best apps are the ones that disappear into the background, letting you focus on what matters. Every project I work on reflects this philosophy—thoughtful design, no unnecessary complexity, and deep respect for user privacy.
When I'm not coding, you'll find me on the golf course, tinkering with computer vision models, or exploring the Colorado outdoors with my family.
What I believe in
Privacy First
Your data stays on your device. I don't track you, collect analytics, or sell your information. What you do with my apps is your business, not mine.
Simple & Focused
Each app does one thing well. No feature bloat, no unnecessary complexity. Just thoughtful design that helps you accomplish your goals.
Native Experience
Built with SwiftUI for the best Apple platform experience. Fast, efficient, and designed to feel right at home on your devices.
Built to Last
I create apps with longevity in mind. No subscription traps or planned obsolescence. Just software that works reliably for years.
Real Support
When you reach out, you're talking to me - the person who built the app. I read every message and genuinely care about your experience.
Sustainable Indie
As a solo developer, I can take the time to do things right. No investors pushing for growth at all costs—just honest software.
My apps are paid, not ad-supported. I believe if something costs money to build and maintain, it's better to charge fairly upfront than compromise on privacy or design.
Let's connect
Got a question, suggestion, or just want to say hi? I'd love to hear from you.