Flo’s privacy scandals and $49.99/year premium have users looking elsewhere. Here are the best period tracking alternatives — from Clue’s science-first approach to Drip’s fully open-source privacy.
Each app below addresses a specific gap in Flo's offering. We picked them based on real user review patterns and feature differentiation.
The most recommended Flo alternative for privacy-conscious users. Evidence-based tracking with 200+ trackable factors. German-based (subject to strict EU data laws), doctor-recommended, and transparent about data practices. Clue Plus adds 12-month predictions and Oura Ring integration.
Explore Clue data →The only FDA-cleared birth control app. Uses basal body temperature to determine fertile and non-fertile days with 93–98% effectiveness. Includes a thermometer in the annual plan. Also integrates with the Oura Ring for automatic temperature readings. FSA/HSA eligible.
Explore Natural Cycles data →Blends science and astronomy to track your menstrual cycle alongside lunar phases. Social cycle syncing lets you share tracking with friends. Supports ovulation prediction, fertility awareness, and pregnancy tracking with a modern, visually engaging interface.
Explore Stardust data →Covers the full journey from period tracking to fertility, pregnancy, and parenting. Daily fertility scores, 2,000+ expert articles, and connection with a care team 7 days a week. Often available free through employer health plans and insurance providers.
Explore Ovia data →Detailed cycle analytics with advanced BBT charting, comparative insights, and an active community of users sharing experiences. Premium unlocks cycle analysis, forecasts, and private messaging. Strong for users who want data depth and community support.
Explore Glow data →The privacy gold standard. Fully open-source, non-commercial, and stores all data locally on your device — no servers, no accounts, no ads. Uses the sympto-thermal method for fertility tracking. Auditable code means its privacy claims are verifiable, not just marketing.
Explore Drip data →We identified these alternatives by analyzing review patterns across health and period tracking apps. Users leaving Flo most commonly cite privacy concerns, aggressive upselling, and the cost of Flo Premium as their reasons for switching.
Flo added an Anonymous Mode and settled its FTC complaint, but trust is hard to rebuild. If privacy is your top concern, Clue (German data laws), Drip (fully open-source, local-only), or Natural Cycles (FDA-cleared medical device) offer stronger privacy guarantees by design.
Clue’s free tier is the strongest — it tracks 200+ factors with evidence-based predictions and no ads. Drip is completely free and open-source with zero data collection. Stardust offers a solid free tier with social cycle syncing.
Only Natural Cycles is FDA-cleared as a contraceptive, with 93–98% effectiveness when used correctly. Other apps track fertile windows but are not validated for contraceptive use. Always consult a healthcare provider before relying on any app for birth control.
We analyze App Store metadata, review patterns, and user migration data to surface the best alternatives objectively — no sponsored placements or affiliate rankings.
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