Can I use Clue without creating an account

No. Clue requires an email address and account creation before tracking. The account data is stored on Clue's servers under GDPR protections. You cannot use Clue anonymously.

What happens if I delete my Flo account

Flo provides a deletion mechanism through the app settings. Under GDPR (if you are in the EU) and some US state privacy laws, you can request deletion of your data. However, deletion requests may not remove data from all backup systems immediately, and data already shared under Flo's previous practices (before the FTC enforcement action) is not recoverable. Deletion is better than nothing but is not equivalent to never having shared the data.

Does Floriva require an email address

No. Floriva stores data on your device and does not require an email address or account creation. If you choose to use encrypted cross-device sync, you set up a local encryption key rather than creating a cloud account. The developer has no user record.

Is on-device storage safe if my phone is lost or stolen

On-device storage means your data is on your phone. If your phone is lost without a passcode, someone with physical access could potentially view the app. Using a phone passcode and enabling full-disk encryption (standard on modern iOS and Android) protects on-device data from physical access. Floriva and Euki also offer app-level PIN or biometric locking as an additional layer.

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Best Period Tracker Apps That Don't Require an Account

No account means no subpoena surface. If you never gave a company your health data, there's nothing for law enforcement to request.

No Account = No Subpoena Surface An account is not just a login mechanism. It is a record linking your identity to your health data in a company's database. When law enforcement or a plaintiff's attorney sends a subpoena or data request to a period tracker company, the account is how they connect your name to your cycle data. No account, combined with on device storage, means there is genuinely nothing for the company to produce. They don't know who you are. They have no data to hand over. This is the strongest form of legal protection available for reproductive health data, not a policy that says they won't share, but a structural absence of anything to share. The Account Requirement Is a Business Decision Apps require accounts because accounts enable business functions: cloud sync, cross device access, personalized content, and, critically, the ability to associate user identity with health behavior for advertising or data monetization purposes. Apps that don't need to monetize data (Euki, Drip) don't need accounts. Apps that store data locally (Floriva) can offer sync via encryption keys rather than user accounts. The account requirement for Clue and Flo reflects their cloud arc