HerMood is a lightweight web app to track and predict the fertile phases of multiple friends. Based on each person’s last period start date and cycle length, it calculates upcoming fertile days and displays them in a monthly calendar and timeline. All data stays private in your browser with local storage. Includes dark mode and a fully responsive design.
- Lightweight & Fast – runs directly in your browser, no server needed.
- Multi-Friend Tracking – add, edit, and remove multiple people.
- Fertile Day Predictions – based on cycle length and luteal phase.
- Monthly Calendar View – see upcoming fertile windows at a glance.
- Timeline View – sorted list of each friend’s next fertile period.
- Dark Mode – switch between light and dark themes.
- Responsive Design – works great on desktop, tablet, and mobile.
- Privacy Friendly – all data stored locally in your browser.
No installation needed — just download and open the HTML file.
- Save
index.htmllocally. - Double-click the file to open in your browser.
- Paste JSON, click Count, and view stats.
You can host this anywhere that serves static files:
- GitHub Pages – Free for public repos
- Netlify – Drag & drop or Git-connected deploy
- Vercel – One-command deploy
- Cloudflare Pages – Unlimited free static hosting
- Surge – Quick CLI publish
Example (Netlify drag & drop):
- Go to Netlify Drop
- Drag your
index.htmlfile into the page - Get your live HTTPS URL instantly
MIT License – feel free to use, modify, and share.