Period Tracker Online — Track Your Cycle From Any Device
Luna is a free online period tracker. Use it from any browser — phone, tablet, or desktop. Track your cycle, symptoms, and get predictions online. Luna is completely free — no credit card, no hidden fees, no app store download required.
What You Get
Everything included, completely free
Works in browser
Mobile-friendly
Syncs across devices
Offline support
No installation
Any device
Get Started in 3 Steps
Up and running in under 2 minutes
1
Create your free account
Enter your name, email, and average cycle length. Takes 60 seconds.
2
Log your first period date
Mark the start of your current or last period. Luna immediately calculates your upcoming dates.
3
Track daily & see patterns
Log flow, symptoms, and mood each day. After 2–3 cycles, predictions reach 85–90% accuracy.
FAQ
Frequently Asked Questions
Can I use Luna on my phone browser?
Yes. Luna is designed mobile-first and works perfectly in Chrome, Safari, Firefox, and all modern browsers on any device.
Does it work on iPhone and Android?
Yes — both. You can also install Luna as a PWA (app shortcut) on your iPhone or Android home screen for a full app experience.
Can I access my data from multiple devices?
Yes. Your data syncs to the cloud. Log on your phone, view on your desktop — everything stays in sync.
Does it work without internet?
Once you've visited a page, it's cached offline. Your dashboard and recent logs are available even without internet.
Also Try
Start tracking Period Tracker Online today
Free forever, for everyone. No credit card needed.
🌸 Create Free Account