Flo Period & Pregnancy Tracker: The period tracker 380M+ women already have on their phone.

You probably already have Flo. 380 million people do. It's the default period tracker the same way Google Maps is the default navigation app - not because it's the absolute best at any one thing, but because it covers everything well enough.

Free version: period and ovulation predictions, cycle calendar, health library with hundreds of articles. Has ads. Premium ($49.99/yr or $9.99/mo) removes ads and unlocks: personalized daily insights, expert-led video courses on fertility/pregnancy/birth, Symptom Checker for PCOS, endometriosis, and fibroids, detailed pregnancy mode for every trimester, and a 24/7 AI Health Assistant.

The pregnancy mode is seamless - when you log a positive test, Flo transitions from cycle tracking to week-by-week pregnancy tracking with fetal development updates, symptom logging, and appointment reminders. That continuity is genuinely convenient vs switching to a separate pregnancy app.

New features include Perimenopause Score and Menopause Timeline for tracking that transition. Rare for a period app to cover the full reproductive lifespan.

FSA/HSA eligible, which is a nice perk if your employer plan supports it.

Compared to Clue ($39.99/yr), Flo has more content (courses, articles, community) but less scientific rigor in its branding. Clue is data-first. Flo is content-first. Compared to Ovia, Flo is consumer-focused while Ovia is employer-sponsored. Compared to Fertility Friend, Flo's fertility tracking is basic - if you're actively TTC with BBT charting, FF is far more powerful.

Privacy has been a concern - Flo settled with the FTC in 2021 over sharing health data with third parties. They've since introduced Anonymous Mode. Worth knowing.

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The Bump

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The Bump is a free pregnancy app with interactive 3D baby models, daily content, baby name finder (with origin, meaning, and popularity trends), and direct registry integration. Week-by-week updates, size comparisons, community forums, and a hospital bag checklist. From the same company as The Knot. Fully free - no premium tier, no paywall. The registry integration makes it unique.

Premom Ovulation Tracker

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