Tracking & awareness tool. Not a substitute for professional medical advice or diagnosis. 18+.
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A severe mood disorder tied to the menstrual cycle — real, diagnosable, and widely dismissed.
Premenstrual Dysphoric Disorder affects an estimated 60 million people globally. It’s been recognized in the DSM-5 since 2013 — yet the average time to diagnosis is still 12 years, typically after four misdiagnoses. That’s over a decade of being told it’s “just PMS.”
Read the full explainer →However you got here, there’s a next step.
A privacy-first PMDD companion — built to shorten the diagnosis gap and support ethical research.
Track symptoms alongside your cycle, understand your own patterns, and read evidence-based education — so you can advocate for yourself with real data, not just a feeling you can’t quite explain.
Health data stays on your device and in your own private iCloud. We built it this way on purpose — we cannot read your logs.
Our story →Everything you need to understand your PMDD.
Awareness
Cycle tracking & symptom reports that reveal your real patterns.
Education
Evidence-based articles, written for you, not at you.
Community
Anonymous-friendly support from people who get it.
Resources
Crisis toolkit, safety plan, and a help finder when you need it now.
Research
Browse peer-reviewed PMDD research for free. Premium adds AI summaries and optional push alerts when new papers land. Opt in separately to share de-identified data and help advance the science.
Built so we architecturally cannot read your data.
Unlike other cycle trackers, your entries live on your device and in your own private iCloud — not in a central database we could access, sell, or lose. A structural guarantee, not a policy promise.
Read our privacy story →
Walk into your appointment with evidence, not just a feeling.
Red Tent PMDD turns months of daily check-ins into the picture clinicians actually need: DSM-5 symptom charts by cycle phase, correlation analysis between symptoms (“when you log loss of interest, depression appears 81% of the time”), and cycle-length trends — exportable as a clean report.
- →DSM-5 PMDD symptom tracking, charted across your phases
- →Pattern strength, co-occurrence, and confidence — explained plainly
- →Export a report PDF your doctor can read in one minute
Designed for the hard days, not just the easy ones.
Your cycle could help end the 12-year diagnosis gap — for everyone after you.
PMDD is one of the most under-researched conditions in reproductive medicine: diagnostic delays average 12–20 years, treatment options are limited, and funding is scarce. We believe the collective, anonymized experiences of this community can change that.
Opt in, and your de-identified data joins an aggregated research dataset — revealing patterns in symptom timing, severity, and treatment response that no single record could show. Shared only as aggregated datasets, only with qualified women’s health researchers.
Entirely voluntary. Off by default. Not tied to Premium. Revocable anytime in Settings → Research Data Sharing.
You’re not the only one in the tent.
Anonymous-friendly peer support, moderated with care — because the luteal phase is easier when someone else says “me too.”
Finally, an app that treats PMDD as real — not as a mood swing to push through.
Exporting a symptom report gave my clinician something concrete to work from.
It’s the first tracker that didn’t make me nervous about who could see my data.
Start understanding your PMDD tonight.
Free to download. Private by architecture. Ages 18+.