This repository contains small, privacy-friendly web apps and utilities I’ve built.
All tools are open source, free to use, and run directly in your browser with no tracking, no ads, and no data collection.
Desktop and mobile friendly.
🌐 Live site: https://daumega.github.io/
A lightweight, private period tracking app.
- 100% free, open-source, and ad-free
- No accounts or logins required
- All data is stored locally on your device
- Uses intelligent math to predict future cycles and ovulation based on your personal history
👉 Try it here: https://daumega.github.io/ptracker/index.html
A simple, client-side loan and amortization calculator.
- Calculates regular payments, total interest, and payoff schedule
- Supports monthly, bi-weekly, weekly, or daily payments
- Supports extra payments to see interest savings and faster payoff
- Generates an interactive chart of principal vs interest per payment
- Download your full amortization schedule as CSV for Excel or Google Sheets
👉 Try it here: https://daumega.github.io/loanCalculator/index.html
Contributions and feedback are welcome!
Feel free to open an issue or submit a pull request.