A Period Tracker That Doesn’t Sell Your Data

When you track your cycle, you are recording deeply personal information — when you bleed, how you feel, when you are fertile, sometimes when you are trying to conceive. It is fair to expect that information to stay yours. Yet investigations have repeatedly found that many popular period-tracking apps collect far more than they need and share or sell it to advertisers and data brokers.

Why this matters more than ever

Cycle data can reveal pregnancy, fertility, and intimate health details. Consumer-protection groups and regulators have raised concerns about health apps quietly passing this data to third parties, and the U.S. Federal Trade Commission has taken action against apps that shared sensitive health information without clear consent. The safest data is the data that is never collected in the first place.

What a truly private tracker looks like

• No account and no sign-up — nothing tied to your name or email.
• On-device storage — your entries live on your phone, not on a company server.
• No ads and no third-party trackers — nobody is profiling you.
• A plain-language promise that your data is never sold or shared.
• Uninstalling the app removes your data, because it was only ever on your device.

This is exactly why My Bloom Buddy was built the way it is. There is no account and no login. Your period start date, cycle length, and notes are stored only on your own phone — they are never uploaded, and we genuinely cannot see them, because they never leave your device. There are no ads and no trackers, and your data is never the product. Privacy is not a feature we added; it is the whole design.