Hello. I'm Kevin Green and I love the 90s. I'm a software engineer who creates mobile apps and dev tools.
I focus on building privacy-first applications that respect user data and provide clean, intuitive experiences.
Currently working on iOS and Androids apps using React Native and building dev tools with Java, Python and C.
A minimalist hydration tracking app that respects your privacy. Track water intake, set goals, and get gentle reminders - all data stays on your device.
iOS App
Built with: React Native, Expo, TypeScript
Professional card centering analysis app for collectors. Uses advanced computer vision to provide precise measurements for grading submissions - all processing happens locally on your device.
Platform: iOS App & Android App
Tech: React Native, Computer Vision, Local Processing
Interactive network topology visualization tool built with D3.js. Features drag-and-drop nodes, multiple layout algorithms (Fat Tree, Binary Tree, Linear), real-time editing, and export capabilities.
Platform: Web Application
Tech: D3.js, JavaScript, HTML5 Canvas
Data Collection: Still does not collect, store, or transmit any personal data.
Local Storage: All data (hydration logs, goals, settings) is stored locally on your device only.
No Tracking: No analytics, no tracking, no third-party services.
No Accounts: No user accounts or registration required.
Offline First: App works completely offline - no internet connection required.
Data Ownership: You own your data. It stays on your device and can be deleted at any time.
Contact: Questions? Email kevin.green@cosmosholo.com
Getting Started: Download Still from the App Store and start tracking immediately.
Setting Goals: Tap the settings icon to customize your daily water intake goal.
Logging Water: Use the quick-add buttons or tap the + button for custom amounts.
Reminders: Enable notifications in Settings > Notifications to get gentle reminders.
Dark Mode: Automatically follows your device's appearance settings.
Data Export: Currently not available - all data stays on your device for privacy.
Contact Support: kevin.green@cosmosholo.com
Data Collection: Cosmos Holo does not collect, store, or transmit any personal data or images.
Local Processing: All image analysis happens locally on your device using on-device computer vision.
No Cloud Services: Images are never uploaded to any servers or cloud services.
No Tracking: No analytics, no tracking, no third-party services.
No Accounts: No user accounts or registration required.
Offline First: App works completely offline - no internet connection required.
Data Ownership: You own your data. All processing happens on your device.
Contact: Questions? Email kevin.green@cosmosholo.com
Getting Started: Download Cosmos Holo from the App Store and start analyzing cards immediately.
Taking Photos: Use the camera to capture your card with good lighting and a clean background.
Analysis Results: View precise centering measurements and grading recommendations.
Export Results: Save analysis results to your device for your records.
Privacy: All analysis happens on your device - images never leave your phone.
Contact Support: kevin.green@cosmosholo.com