Is Flo Legit & Safe? Period Tracker Reviews (2026)
Flo is the most-downloaded period and cycle tracker in the world, with 100M+ installs and a 4.7-star average, but its 1-star reviews raise the questions people actually search: data-sharing complaints (Flo settled with the FTC in 2021 over exactly this), a paywall over nearly every feature, years of tracking lost with no restore on a new phone, predictions that stop updating, and a premium chat reviewers call pre-written filler. What the negative reviews really say about whether Flo is legit, safe, and private in 2026.