Privacy Roundups

Free period tracker apps ranked by privacy posture, feature depth, and what they actually do with your data — since free apps often trade data for revenue.

Ranked by fertility tracking accuracy, privacy architecture, and data risk. Includes FDA-cleared, temperature-based, and on-device options.

Five period tracker apps with no documented history of selling or sharing reproductive health data. Ranked by privacy architecture, not just policy promises.

Reproductive health data for minors needs more protection, not less. These apps don't require accounts, don't sell data, and don't target ads at teenagers.

No account means no subpoena surface. If you never gave a company your email address or health data, there's nothing for a court order to compel them to produce.

Irregular cycles generate more health data over longer periods. These apps handle unpredictable cycle lengths — and we note which ones are careful with the data they accumulate.

PCOS tracking requires logging irregular cycles, symptoms, and BBT over months or years. That long data history makes privacy more important, not less.

Ranked by privacy architecture — on-device storage, enforcement history, data model, and legal jurisdiction. Not just policy promises.