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Contact Us
At Flo we aim to be the essential health partner for women around the world. Flo is a period tracking app that gives actionable feedback, helping you gain confidence and control.
You can be confident that you are in control of your data when you use Flo
Flo is a leader in the privacy space. It is the only period tracking app that has award winning privacy data protections and gold standard certifications. We encrypt all your information, and offer features like Anonymous Mode that redefine the way you secure your data.
Your body. Your data. Period.
Meet Flo's Privacy & Security team

Sue Khan

Roman Bugaev

Laure Lydon
Your frequently asked questions
Every product feature we build at Flo is designed to empower our users and be used with peace of mind. We encrypt all your data to ensure it can’t be accessed by anyone except you. Your data belongs to you, and at Flo, it’s never for sale.
Flo never has sold, nor will sell user data. Flo is the only women’s app that is dual ISO certified in privacy and security — the gold standard in data protection. ISO is a rigorous international standard that is difficult to obtain. We strive to set the standard for privacy in the femtech industry. But our work isn’t done. And as we continue to evolve, we will continue to build new features, settings and standards to protect our user data.
Our business generates revenue from subscriptions only. Flo never has sold, nor will sell user data. The only money we make is from when you pay us for enhanced features and subscription products.
Yes, your data is encrypted at Flo and we currently use the latest, most secure versions of encryption technology, including TLS (Transport Layer Security) 1.2 and TLS 1.3. This means if someone tried to intercept your data when it is being sent, they would only be able to see a scrambled, illegible mess. We also encrypt stored data, and use one of the strongest encryption technologies (AES 256) which is commonly used by banks, governments and security experts worldwide.
By using encryption technology as standard, we’re protecting your personal information from loss, theft, and misuse.
The data you share with us — whether that’s your cycle dates or your symptoms — is only ever used to make your experience of using the Flo app better. For example, we keep records of your cycles to give you better cycle predictions, or power other insights that the Flo app provides.
Read all about how you are in control of your data in our Privacy Policy. You can also visit our Privacy portal, and the Privacy Center in-app.
Anonymous Mode gives you access to Flo without sharing any information that identifies you (such as your name or email address), so your health information is completely private to you.
If you choose to use Flo for Partners, you are opting to share limited data with your partner only. The information that you choose to share is not shared with anyone else and remains encrypted and secure. You can stop sharing at any time.
If you are using Flo and want a copy of your data you can contact us at support@flo.health.
You have the right to request that we erase your personal data at any time, no matter where you are in the world, in accordance with our Privacy Policy. Simply email your deletion request to us at support@flo.health, or delete your account directly in the app in your “Settings.”

What users say about Flo
Chosen by over 380 million users1 worldwide, you only need to see the reviews to know why women love Flo.
“I have been using Flo for over 4 years now, and it has been great about keeping my data safe and logging my periods and providing predictions. I use it every month.”
“This is a great tool I have been using for just a few days, but I can see the power in it. So much more affordable and all of your information is private.”
“Flo is a safe place for everybody — users can talk about stuff they fancy doing without being worried about privacy…”
References
- Sensor Tower, Jan. 2024, iOS & Android, by category ranking