Flo, by Flo Health, is a cycle tracker. You log periods and more than 70 symptoms and moods, and it predicts your next period and fertile window, follows a pregnancy week by week and covers perimenopause. Flo Premium adds a Health Assistant chatbot, a Symptom Checker and a report you can share with your doctor. An optional Anonymous Mode separates your health data from your name and email.
Emerge Care does a different job. It does not track cycles or predict ovulation. It is an iPhone health companion for the time between doctor visits: you tell it how you feel, it keeps the log on your phone, answers with named sources, and builds a one-page summary for your next appointment.
Choose Flo if
You want to track your period, ovulation, pregnancy or perimenopause, with predictions, partner sharing, Android or Wear OS, and a free tier.
Choose Emerge Care if
You want to log symptoms and side effects in your own words, get answers that name their source, keep your records on your own phone, and walk into any appointment with a summary and your questions.
At a glance
Emerge CareFlo
Log symptoms and side effects by talking✓Yes◐Partly
Answers from your own log✓Yes◐Partly
Names a source for every health fact✓Yes–No
Visit summary for your doctor✓Yes◐Partly
Check-ins and reminders after a visit✓Yes–No
Health records stored on your phone✓Yes–No
Reads your lab results✓Yes–No
Works with Apple Health✓Yes✓Yes
Android app–No✓Yes
Clinicians you can see or message–No–No
What Flo does that Emerge Care doesn't
Period and ovulation tracking with predictions–No✓Yes
Pregnancy and perimenopause modes–No✓Yes
Anonymous Mode (no name or email tied to your data)–No✓Yes
Details and sources are in the table below, and in "Where Flo is stronger".
Side by side
FloEmerge Care
Built forFloPeriod, ovulation, pregnancy and perimenopause tracking with predictions12Emerge CareTracking how you feel between visits and getting ready for the next one
Symptom logFloTap to log from more than 70 symptoms and moods, on the free and Premium plans111Emerge CareTell it how you feel in your own words; it logs symptoms and side effects and checks in when something keeps coming back
Assistant and sourcesFloHealth Assistant chatbot on Premium. Flo says its content is based on medical evidence and checked by medical specialists; we found no named source on each answer34Emerge CareHealth facts come with their sources, such as FDA drug labels, the U.S. National Library of Medicine or health-authority pages, and it says so when it has no source
Visit preparationFloPremium doctor's report: a summary of your cycle and symptom patterns you can share with your doctor13Emerge CareOne-page visit summary PDF (symptoms and side effects, heart rate, check-ins, labs, weight, your questions) plus a questions-for-your-doctor list
Where your health data livesFloOn its servers, with AES-256 encryption at rest. Optional Anonymous Mode keeps your name, email and device identifiers apart from your health data. Flo says it never sells data or shares health data for advertising. In 2021 it settled FTC charges over sharing health data with analytics firms, including Facebook and Google, from 2016 to 2019568Emerge CareHealth records and chats stored on your iPhone. Each question passes through our server to the AI and back; our server doesn't store or log your messages.
PlatformsFloiPhone, Apple Watch, Apple Vision Pro, Android and Wear OS; reads data from Apple Health; 21 languages127Emerge CareiPhone, with Apple Health and Apple Watch
PriceFloFree core tracking; Flo Premium in-app purchases on the US App Store from $22.99 to $92.99, by plan and length12Emerge CareFree to download on iPhone, with a monthly subscription in the App Store
Where Emerge Care is different
Built around symptoms, side effects and doctor visits, for any condition, rather than around your cycle.
You log by talking, and it checks in when something keeps coming back.
It answers questions about your own log, and every health fact names its source.
A one-page visit summary PDF and a questions-for-your-doctor list, for any clinician you see.
Your health records and chats are stored on your iPhone. We never sell your data.
Lab report upload and a Health Age estimate.
Where Flo is stronger
Purpose-built period, ovulation, pregnancy and perimenopause tracking with predictions. Emerge Care does none of this.
On Android and Wear OS as well as iPhone and Apple Watch.
A free tier with core cycle and symptom tracking.
Anonymous Mode: an optional account with no name, email or device identifiers tied to your health data, plus ISO 27001 and ISO 27701 certifications.
Flo for Partners, which shares cycle predictions or pregnancy updates with a partner.
Available in 21 languages.
Can you use both?
Yes. Flo for your cycle, fertility or pregnancy; Emerge Care for symptoms and side effects in your own words, sourced answers and the summary you bring to your clinician.
Questions
Is Flo free?
Yes. Flo is free to download with core cycle and symptom tracking. Flo Premium adds the Health Assistant, the Symptom Checker, the doctor's report and more (checked 15 October 2026).
How much is Flo Premium?
On the US App Store, Flo Premium in-app purchases range from $22.99 to $92.99 depending on the plan and its length; the listing does not label each price (checked 15 October 2026). Check the App Store for current prices.
Is Flo on Android?
Yes. Flo is on Google Play and Wear OS as well as iPhone and Apple Watch. Emerge Care is iPhone only.
What happened with Flo and the FTC?
In 2021 the FTC finalized a settlement with Flo Health over charges that, between 2016 and 2019, it shared users' health data with analytics and marketing firms, including Facebook and Google, despite promising to keep it private. The order requires Flo to get users' consent before sharing health data and to have an independent review of its privacy practices. Flo says the settlement was not an admission of wrongdoing. In July 2025 Flo settled a related class action during trial; a jury then found Meta liable in the same case.
What is Flo Anonymous Mode?
An optional setting that creates a new account without your name, email or device identifiers tied to your health data. Flo says your original account is deleted when you switch, data can't be recovered if your phone is lost, and pairing a wearable is not available in Anonymous Mode.
Does Flo have an AI assistant?
Flo Premium includes a Health Assistant chatbot with educational dialogs about your cycle and symptoms, and Flo says it uses AI for personalised insights. We found no named source on each answer. Emerge Care's Sunny names the source for every health fact.
Can Flo make a report for my doctor?
Flo Premium can bundle your cycle and symptom patterns into a report to share with your doctor. Emerge Care builds a one-page visit summary PDF for any condition, with your questions at the end.
Can I use Flo and Emerge Care together?
Yes. They do different jobs: Flo for your cycle, fertility and pregnancy, Emerge Care for symptoms, side effects and getting ready for appointments.
Sources
Facts about Flo come from its own pages, its App Store listing and press coverage, checked on October 15, 2026. Prices and features change, so check Flo's own site before you decide.
Emerge Care makes this page. We are not affiliated with Flo; names and logos are trademarks of their owners and are used only to identify the apps compared. Spotted something out of date? Email hello@getemergeapp.com and we'll fix it.
Emerge Care
Flo
