🌸

You have been through this before. Now you can track it.

Luna follows your mood across your whole cycle, not just the days other apps care about. It asks about the symptoms that go unasked, and the patterns that go unseen, for years.

This is a research demo. It is not a diagnosis. It is a start.

Built by Dr. Fareeha Fatima · Not a medical tool · Research prototype

Step 1 of 7
👋

What do we call you?

Luna personalises your check-ins. Your name stays on your device.

Step 2 of 7
📅

How long is your typical cycle?

Count from the first day of one period to the first day of the next. Cycles come in all lengths. There is no wrong answer here.

21-25 days
26-30 days
31-35 days
36-40 days
41-45 days
🔮 Irregular
Step 3 of 7
🗓️

Where are you in your cycle right now?

Based on your cycle length, these are your approximate phase windows. Pick the one that feels closest to where you are today.

Step 4 of 7

How is your body right now?

Rate each one honestly. There are no wrong answers and no one is watching.

🫀
Bloating or physical heaviness
🤕
Headaches or body aches
😴
Fatigue or low energy
🍫
Appetite changes or cravings
Step 5 of 7
What other apps never ask

How is your mind right now?

These are the symptoms that stay invisible the longest. They are also the ones that matter most for PMDD.

🔍
Tunnel vision on one worry
Fixating on one problem, person, or fear. Unable to zoom out, even when you know you should.
💭
Self-sabotaging thoughts or urges
The pull to quit, withdraw, send the message, walk away. The version of you that wants to burn things down.
🌩️
Sense of impending doom
Feeling that nothing will work out, that you have failed, that something bad is coming. Even when nothing has changed.
😤
Irritability or sudden anger
Short-fused, easily triggered. Reactions that feel too big for the moment.
🫧
Feeling invisible, disconnected, or numb
Wanting to disappear. Feeling like people cannot see you. Going through the motions.
Step 6 of 7
⚖️

How much is all of this affecting your day?

This one question is the most important. It is what separates PMS from PMDD, and it is what clinicians most need to see over time.

😊 Not really Functioning fine
😐 A little Noticeable, managing
😟 Quite a bit Hard to focus or connect
😔 Significantly Struggling to get through
Done for today

Today's Check-In

Here is what Luna picked up today.

🌸

Luna Insight

Your next check-in
Tomorrow

Luna builds a clearer picture the more you check in. One data point is a start. Thirty is a pattern.

This is a research prototype exploring AI-assisted diagnosis of PMDD and women's mood disorders.
Built by Dr. Fareeha Fatima · Reach out

Your symptom picture

Based on what you logged today.

What this means

This is a single-session snapshot. With daily logging, Luna builds a longitudinal picture across your whole cycle — the kind of data static instruments cannot capture.