# lvrpiz app studio

> Independent app studio by Álvaro García Pizarro (lvrpiz). Privacy-first iOS
> apps and web tools, originally built to solve my own problems and published
> in case they help someone else. Every app processes data locally on device:
> no accounts, no tracking, no servers, no analytics.

## Apps

- [Tweny](https://apps.apple.com/us/app/tweny/id6756274546): Protect your eyes with the 20-20-20 rule. Prevent fatigue and stay focused with customizable timers and Live Activities. Platform: iOS. Category: HealthApplication. Price: free.
- [Stress Tracker HRV](https://stressapp.lvrpiz.com): Stress tracking with Apple Watch HRV. Monitor your stress and improve your well-being. Platform: iOS. Category: HealthApplication. Price: free.
- [Lapis](https://apps.apple.com/us/app/ai-offline-llm-chat-lapis/id6754216427): Local AI offline & secure chat assistant. Ask anything, no internet needed. Platform: iOS. Category: ProductivityApplication. Price: free.

## Projects

- [lvrpiz Talk Assets](https://github.com/alvarogarciapiz/assets): Materials, presentations, and resources from my talks and public speaking engagements.
- [AWS Practice Portal](https://aws-p2.lvrpiz.com): Master AWS certifications with interactive practice scenarios and detailed explanations.
- [Sun Exposure: Time in Daylight](https://timeindaylight.lvrpiz.com): Monitor your sun exposure, boost mood, improve Vitamin D, and improve your well-being.
- [IntelliTweet](https://github.com/alvarogarciapiz/IntelliTweet): Intelligent Twitter automation with advanced scheduling and analytics.
- [CORS Visualizer](https://cors-visualized.lvrpiz.com): Interactive visualization tool for understanding and debugging CORS policies.
- [Subnet Calculator](https://apps.apple.com/us/app/subnet-calculator-192/id6748156871): Subnet and IP calculator for students and professionals. Fast, simple, and reliable.

## Pages

- [Home](https://apps.lvrpiz.com/): Full list of apps and projects.
- [Support](https://apps.lvrpiz.com/support): Contact form, response times, how to report bugs.
- [Privacy & Terms](https://apps.lvrpiz.com/privacy-and-terms): Data handling policy and terms of use.

## About

- Author: Álvaro García Pizarro — Cloud, DevOps and AI engineer based in Valladolid, Spain.
- Personal site: https://www.lvrpiz.com
- Newsletter (Spanish, weekly): https://www.blog.lvrpiz.com
- Contact: hello@lvrpiz.com
- Source: https://github.com/alvarogarciapiz

## Notes

- All apps are free and available on the Apple App Store.
- No app collects, stores or transmits personal data.
- Health data (Stress Tracker HRV, Sun Exposure) is read from Apple Health
  with explicit permission and never leaves the device.
- Last updated: 2026-08-25