comparisons

Floriva vs Natural Cycles: Privacy, Data, and Tracking

Natural Cycles is FDA-cleared for birth control and cloud-based. Floriva is local-first and not a contraceptive. Here's an honest side-by-side on data storage

This comparison requires a critical up front clarification: Natural Cycles and Floriva are not competing for the same use case. If you want a clinically validated, FDA cleared contraceptive method based on temperature tracking: Natural Cycles is the appropriate product. Nothing in this comparison should be read as a reason to use an uncleared tracking tool for contraception. If you want the most privacy protective cycle tracking available — for health awareness, cycle syncing, fertility monitoring, or any purpose other than FDA cleared contraception: Floriva's architecture is the relevant comparison. What Natural Cycles Actually Is Natural Cycles is a medical device. It received FDA De Novo clearance in 2018 as the first app cleared specifically for contraceptive use. The clearance means FDA reviewed clinical data on the algorithm's accuracy and safety as a birth control method. Key facts: Typical use failure rate: 7% per year (1 in 14 users will become pregnant per year with typical use) Perfect use failure rate: 2% per year (1 in 50 with perfect use) Method: Daily BBT measurement + optional LH test strips, processed by a proprietary algorithm that designates days "green" (not fer