Your cycle is data.
Start using it.

Luna helps female athletes track their cycle alongside training — not to prescribe what to do, but to help you understand your own patterns over time.

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Free during beta. No credit card.

Luna
Sunday, 23 March
Heads up · Day 26
Period likely in 2–3 days
Based on your last 4 cycles. Ready to log when it starts?
Light fatigue Mild cramps Headache Mood shift Bloating
MTWTFSS 3456789 10111213141516 17181920212223 242526
Resting HR
58 bpm
Sleep
7.2 hrs

Built for athletes who want answers, not advice

Luna works quietly in the background and only asks for your input around your period. Every feature was shaped by what female athletes told us they actually need.

Understand your patterns

Luna combines your cycle data with training and health metrics you're already logging. Over time, it surfaces your personal patterns — when you tend to feel strong, when recovery takes longer, and what's normal for you.

Fuel smarter

Your energy availability changes across your cycle. Luna helps you see how fuelling, hydration, and recovery relate to where you are — so you can make informed choices, not follow a generic plan.

Spot the warning signs

Missed periods, persistent fatigue, unexpected changes. Luna tracks the signals that matter for long-term athlete health — and lets you know when something's worth a conversation with your doctor.

Your data stays yours

You control exactly what's shared and what isn't. No data sold to third parties. No coach access without your explicit consent. Period tracking that respects why privacy matters.

It stays quiet until it matters

Most tracking apps want something from you every day. Luna doesn't. It pulls your training and health data automatically, and only checks in when your period is due.

1

Luna already knows most of it

Training load, heart rate, sleep, recovery — Luna pulls this from your wearable and coaching platform. No double-entry.

2

Check in around your period

When your period is approaching, Luna asks about flow and symptoms. A few taps, only when it matters. The rest of the month, it works in the background.

3

It gets smarter over time

As your cycles progress, Luna learns your patterns and gets better at predicting when to check in — and what to show you.

We asked 76 female athletes what they actually need

Before writing a line of code, we ran a research survey. Here's what we learned.

0%
say their cycle definitely or sometimes affects training
0%
want better fuelling guidance around their cycle
0%
want to understand their own patterns over time
“I wish coaches understood that some days my body just won't perform the same — and it's not about effort, it's physiology. Having data to show that would change everything.”
— Luna survey respondent, competitive rower
“I took years to realise my back pain was period-related, not my old injury. A tracking app that helped me see that pattern would have saved me a lot of worry.”
— Luna survey respondent, competitive rower
Luna is built on what athletes told us they need — not wellness trends. We don't believe in generic “cycle syncing” prescriptions. We believe in helping you understand your own data.

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Free during beta No spam. One email when the beta opens. We don't sell your data. Ever.