28X private
PERIOD™

Your data stays yours. Always. The world’s first Women's health app built entirely around privacy. Free for everyone, everywhere.

WE ARE
redefining the future
OF WOMEN'S
HEALTH

28X is more than a period tracker, it’s a new standard for women’s health technology.

We’re the first platform to combine cycle tracking and symptom insights with complete data privacy.

Your information stays on your device, never stored in the cloud, never sold, never shared. Created by women, for women, 28X is free to use, global, and inclusive, designed to support every woman, everywhere.

Because menstrual health is public health. And women everywhere deserve technology that protects, not profits.

MISSION

over money

Your health shouldn’t come with a price tag. When faced with a choice between profit and purpose, we choose impact, every time. 28X is completely free to use, no paywalls, no subscriptions, no data sharing.

EVERY WOMAN,

everywhere

From London to Lagos, every woman deserves access to safe, reliable health tools. 28X will soon be available in over 33 languages, and includes support for neurodivergent users and those with lower literacy levels.

BEAUTY

MEETS

function

Track your cycle through a beautifully designed, interactive butterfly. A private, stigma-free experience created for every woman. 100% of users said it removed the embarrassment of opening a period app in public, a reminder that thoughtful design can protect dignity as much as it empowers it.

PRIVACY,

by design

Your data isn’t a product. You are not the product. 28X was built to protect what matters most, your privacy.

While other apps store your most personal data in the cloud, we keep yours where it belongs, with you. Your information never leaves your device. No tracking, no sharing, no hidden trade-offs.

Latest news & content

THE REVOLUTION IN

women's health

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A mission founded
TO GIVE BACK

When millions of women trust you with their health, you carry a responsibility, not an opportunity.

At 28X, giving back isn’t a campaign, it’s built into everything we create.

We’re building technology that serves women, not the other way around, creating impact at a scale digital health has never seen before.



TRUSTED partners

WORKING ALONGSIDE LEADING

health organisations