# Period-Tracking App Euki Prioritizes Data Privacy
Euki, a new period-tracking app, stores all user data directly on your phone rather than uploading it to company servers. The app requires no account creation, meaning users do not need to provide an email address, password, or personal information to start tracking their cycle.
This approach protects your menstrual data from corporate collection and potential breaches. Most mainstream period trackers, including Flo and Clue, store user data in the cloud. While these apps encrypt information in transit, they still collect and retain data on their servers, creating privacy risks if those servers are breached or if the company changes its privacy policies.
Euki's local storage model means your cycle information never leaves your device. You control the data entirely. The trade-off is that you cannot sync your information across multiple devices or restore it if you lose your phone. Euki offers optional cloud backup, but it remains your choice whether to use it.
This matters because period data reveals intimate details about your health, fertility, and reproductive patterns. If breached, this information could be sold to data brokers, used for targeted advertising, or potentially accessed by law enforcement or employers in jurisdictions with abortion restrictions.
The privacy advantage comes with practical limitations. You lose the convenience of accessing your data on your laptop or tablet. If you switch phones, backing up your information requires intentional action through Euki's backup feature rather than automatic syncing.
Euki remains free and open-source, meaning independent developers can review its code to verify privacy claims. The app appears designed for users who prioritize data ownership over cross-device convenience.
For people concerned about period-tracking data being harvested or sold, Euki offers genuine protection. Those wanting synchronized tracking across devices should consider whether Clue or Flo's privacy policies satisfy their comfort level,