MANIFESTOThe cycle deserves better. So we built it.
Plumm was born from frustration: cycle apps resell your data, predict an « average » that belongs to no one, and talk down to you like a patient. There was none that respects you.
Zero judgment
Pill or not, baby or not — we don't care. We accompany you, that's all.
Zero resale
Your data is not a product. Ever.
Precision without overpromise
We're honest about what we know — and what we don't.
What we refuse
Apps that resell. Your periods, sex life and pregnancy are intimate medical data. We don't resell them, we don't share them, we don't even analyze them — they stay on your phone by default (and if you enable a backup, that's your choice, never ours).
Apps that judge. No guilt-tripping pop-up if you skip a log. No « you missed your goal ». No lecture about your contraception or your life.
Apps that overpromise. Nobody predicts ovulation 100 %. The body isn't a clock. We'd rather tell you the truth than sell you a certainty.
What we believe
That your cycle is unique — an app predicting from a « 28-day average » doesn't know you. Ours learns from you.
That your privacy has no price, even free. Hence local-first, from day one.
That health can be gentle. Roo, our mascot, isn't a gimmick: she's that intent in panda form. A companion, not a dashboard.
Our commitment
Plumm will stay free at its core. Always.
Never any advertising. Never any resale of your data. Never any guilt-tripping for missing a log.
If one day we break these promises, we no longer deserve the name Plumm.
Who is it for?
For everyone who wants to know themselves better. Those tracking their cycles, trying to conceive, pregnant, or on contraception.
Whatever your life, your body, your story — Plumm is on your side.
And what about Roo?
Roo is the little red panda who watches over your cycle. She changes expression with your mood, comforts you on hard days, celebrates when you take your pill. She's the face of Plumm.
Because we deal with an intimate subject. And we decided it could be gentle.
Read more