Flo vs Clue

Flo

flo.health

Analyzed October 13, 2026

Depends

Confidence: Medium

Buy Flo if you want a free, popular cycle tracker and accept its data-sharing history.

Read the full report

Clue

longevityadvice.com

Starting report…

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Pick Flo when

Cycle and period tracking
Trying-to-conceive planning
Budget users wanting a free tracker

When Flo is not a fit

Privacy-first users
Teams or businesses needing shared tools
Ad-averse users on the free tier
Guess: anyone needing medical-grade prediction accuracy

Sources

All About Flo: A Review of the Period Tracker Apphealthline.com
review
Read Customer Service Reviews of flo.healthtrustpilot.com
review
Flo Cycle & Period Tracker - App Store Reviewsapps.apple.com
review
The Flo app is inherently flawedreddit.com
review
Is Flo premium worth it??reddit.com
review
Flo App Privacy Review: Is the Flo Period Tracker Safe?mozillafoundation.org
review
Jury Decides Meta Stole Data From a Period-Tracking Appcnet.com
news
Flo & Google to Pay $56M Over Period-Tracking Privacy Casecaptaincompliance.com
news
Flo Health settles with the FTCnatlawreview.com
official
Flo Health raises $200M at a $1B+ valuationtechcrunch.com
news
Flo developing anonymous mode to quell privacy concernswypr.org
news
Flo has shared who of their 167 million users were pregnantlinkedin.com
news