iOS apps · Web tools · Open source
Apps and tools, built for myself and shared
Projects I originally made to solve my own problems, built from the ground up and published in case they help someone else. Privacy-first iOS apps that keep your data on your device, plus a handful of web tools.
Apps
All of them process your data locally on your device. No accounts, no tracking, no servers.
Tweny
Protect your eyes with the 20-20-20 rule. Prevent fatigue and stay focused with customizable timers and Live Activities.
Stress Tracker HRV
Stress tracking with Apple Watch HRV. Monitor your stress and improve your well-being.
Lapis
Local AI offline & secure chat assistant. Ask anything, no internet needed.
Sun Exposure: Time in Daylight
Monitor your sun exposure, boost mood, improve Vitamin D, and improve your well-being.
Other projects
Web tools and open-source work, mostly built while learning something new.
lvrpiz Talk Assetsassets
Materials, presentations, and resources from my talks and public speaking engagements.
AWS Practice Portal
Master AWS certifications with interactive practice scenarios and detailed explanations.
IntelliTweet
Intelligent Twitter automation with advanced scheduling and analytics.
JSON ⇄ TOON Converter
Token-Oriented Object Notation converter optimized for LLM processing.
CORS VisualizerNEW
Interactive visualization tool for understanding and debugging CORS policies.
Subnet Calculator
Subnet and IP calculator for students and professionals. Fast, simple, and reliable.