Flo vs What to Expect: a plain-language comparison

The short answer

Rated across seven axes, availability, price, Apple Health, AI, privacy, community, and content: Flo wins on AI, monthly scale, and library size. What to Expect wins on birth-club community structure and brand trust built over 40 years of books. Both carry privacy records that deserve a read before you install. Neither is the right pick if your deciding axis is Apple Health. For that, myCocoon reads sleep, resting heart rate, and steps, plus the mood you log, watching each signal against your own baseline, keeps the HealthKit-derived signals in a local-only store that never reaches a company server, and runs its everyday AI on-device with Cloud AI off by default. It is iPhone-only and newer, with no Android app, no peer community, and a smaller library. The full fit is in the last section.

This is the longer answer. What each app actually is, where the data goes, and which one fits your situation.

Last reviewed: 24 June 2026.

What we compared

Naming the dimensions before stating the verdict is what separates a comparison from a hit piece. Seven axes, applied the same way to both apps.

• Availability and platforms. Which devices, and who can install it.
• Price and monetization. Free, subscription, or ad-supported.
• Apple Health. Does it read, write, or neither, and what happens to the data after.
• AI. What ships, what runs it, what it can see.
• Privacy architecture and record. Where the data lives, and the documented history.
• Community. What kind of peer connection the app offers.
• Content depth. How large, and how reviewed, the library is.

Two apps, seven axes. The table comes first, then a deeper read on each.

Flo vs What to Expect at a glance

Flo: the category giant

Flo is the largest consumer pregnancy and fertility app by scale, with 380 million cumulative registered accounts and monthly active users in the tens of millions across iPhone and Android. (Databricks, 2025) Its library of 5,000-plus evidence-based resources is each reviewed by two of its 120-plus in-house doctors and health experts (Flo), paired with an anonymous “Secret Chats” community moderated by staff rather than clinicians (Flo), and an in-app AI assistant, Ask Flo, behind the Premium tier. A 2025 Databricks press release confirms Flo fine-tunes its own models on Mosaic AI; the base model underneath is not named publicly.

On Apple Health, Flo reads data in a limited way and is scaling back broader sync (Flo Help). The privacy record is documented. A 2021 FTC consent order followed Flo sharing users’ health data, including pregnancy status, with Facebook, Google, and analytics firms despite privacy promises. The order requires affirmative consent before sharing health data, user notification, instructions to third parties to destroy the data, and independent privacy review (FTC, 2021). Flo’s own Anonymous Mode, launched in 2023, was the company’s feature, not a term of that order (Flo). On August 1, 2025, a California federal jury found Meta liable under the state’s Invasion of Privacy Act for collecting Flo user data through its SDK; Flo settled its own related claims before the verdict, with amounts undisclosed (CNBC, 2025). Mozilla still carries a Privacy Not Included warning for Flo (Mozilla).

What to Expect: the brand, the community, the data question

What to Expect is the digital arm of a book franchise that has been in print since 1984 and is stocked in hospital bag checklists the world over. The app is free, available on iOS and Android, and claims more than 15 million parents as users (App Store listing). Its community is structured differently from Flo’s: birth clubs organised by due date, where women expecting the same month track together and compare notes, rather than an anonymous topic-based feed. That structure is the feature Flo’s Secret Chats do not replicate.

Content is anchored to ACOG, AAP, and CDC guidelines, and the app includes week-by-week tracking, symptom logging, kick counter, weight tracking, and 3D pregnancy videos. The brand’s 40-year editorial history gives the content a credibility that is harder to quantify than Flo’s reviewed-article count but is real to the reader who spent a first pregnancy with the paperback.

The privacy picture is where the media-business model shows its edges. Mozilla’s August 2022 Privacy Not Included review found that What to Expect, owned by Everyday Health Group, a division of Ziff Davis, “collects, uses, shares, and even sells as much information as it seems to possibly can.” Researchers noted that Everyday Health shares data with third-party advertisers for targeted behavioural advertising and gathers additional data about users from social media, public sources, and data brokers to build expanded profiles (Mozilla, 2022). Mozilla reviewed all ten pregnancy trackers in that August 2022 cycle and every one received a warning. You can request opt-out of the sale of your personal information at dsar.whattoexpect.com or by emailing privacy@everydayhealth.com.

Which should you pick?

Pick Flo if you want a large, actively maintained app with an AI assistant, a reviewed content library, and cross-platform reach on both iPhone and Android. The privacy obligations from the 2021 FTC consent order are federally enforceable and public, which means you can read exactly what Flo agreed to and hold it to those terms.

Pick What to Expect if the birth-club structure matters to you: connecting with women due the same month, in groups organised around due dates rather than anonymous topics, alongside content from the book series you may already trust. Read the Everyday Health privacy policy before installing, because Mozilla’s finding that the app sells data to advertisers is the main thing the feature list does not surface.

For neither: if reading Apple Health data across several signals, or keeping health data on your device rather than a company server, or using an ad-free app is the deciding factor, both apps sit on different architectural bets from what that reader needs. For the wider field and the full rubric behind this comparison, see the best pregnancy apps for 2026 and where your pregnancy app data actually goes.

Where does myCocoon fit?

myCocoon is the privacy-first, iOS-only option, and the smallest of the three by every measure that counts. No Android app, no peer community, no ads, and a smaller content library than either Flo or What to Expect. It is live on the App Store for iPhone users on iOS 26 or later. If community depth or Android support is the deciding factor, the two apps above are the rational choice and it is not close.

The architectural difference is what the app does with Apple Health data. myCocoon reads sleep, resting heart rate, and steps from Apple Health, alongside the mood you log in the app. The HealthKit-derived signals live in a local-only store on your phone that never syncs anywhere; your mood entries sync only to your own iCloud. None of it reaches a company server. The AI runs on-device, and Cloud AI is off by default. If you turn it on, a daily summary of those signals, your sleep hours, resting heart rate, steps, and activity level, is calculated on your phone and sent with your question to the cloud model; with Cloud AI off, none of it leaves the phone. Where Flo reads Health data in a limited way and What to Expect discloses no integration at all, myCocoon’s bet is that this reading happens on the phone and stays there: it watches sleep, resting heart rate, and steps each against your own baseline, raising a gentle nudge when any one drifts, a run of short nights, an elevated resting heart rate, an unusually high-activity day, and gathers them into a daily digest, none of it leaving the phone. Reading them jointly, as one correlated picture, is on the roadmap, not shipped. If the privacy sections above made you pause before installing either app, that is the axis myCocoon was built around. The full head-to-head is in myCocoon vs Flo.

Common questions

Is Flo better than What to Expect? It depends what you want. Flo wins on AI (Ask Flo) and scale, with 380 million cumulative registered accounts. What to Expect wins on community structure, with birth clubs organised by due date that Flo’s anonymous Secret Chats do not replicate, and on brand trust from a book series in print since 1984. For Apple Health integration or health data staying on your phone, neither is the right pick.

Does What to Expect sell your data? Mozilla’s August 2022 Privacy Not Included review found that What to Expect, owned by Everyday Health Group (a Ziff Davis division), collects, uses, shares, and sells personal information, including to third-party advertisers for targeted behavioural advertising. It also gathers additional data from social media, public sources, and data brokers. You can request opt-out at dsar.whattoexpect.com. Read the current Everyday Health privacy policy before installing.

Does Flo have better content than What to Expect? Flo claims 5,000-plus resources, each reviewed by two of its 120-plus in-house doctors and health experts. What to Expect cites ACOG, AAP, and CDC alignment but does not publish a comparable reviewed-article count. Flo’s library is larger by volume; What to Expect’s advantage is the brand authority of the books, in print since 1984 and widely stocked in obstetrician waiting rooms.

Which pregnancy app works with Apple Health? Neither Flo nor What to Expect discloses an integration that reads across multiple Apple Health signals. Flo reads Apple Health data in a limited way and has been scaling that back. What to Expect discloses no HealthKit integration. myCocoon reads across several channels including sleep, resting heart rate, steps, and mood, and keeps all of it in a local-only store, never synced to a company server.

What is the What to Expect app’s privacy record? Mozilla’s August 2022 Privacy Not Included review flagged What to Expect for selling data to third-party advertisers and gathering additional data from public sources and data brokers. Mozilla reviewed all ten pregnancy trackers in that August 2022 cycle; every one received a warning. What to Expect is owned by Everyday Health Group, a division of Ziff Davis.

Does Flo have an AI assistant? Yes. Flo ships Ask Flo, an in-app AI assistant available behind the Premium subscription. A 2025 Databricks press release confirms Flo fine-tunes its own language models on Mosaic AI; the base model vendor is not publicly disclosed. What to Expect discloses no AI features in its current app.

Is there a private pregnancy app that keeps health data on your phone? myCocoon is built around that question. It is iPhone-only (iOS 26 or later), with no Android app and no peer community. It reads sleep, resting heart rate, and steps from Apple Health and keeps those HealthKit-derived signals in a local-only store that never syncs to a company server. Its everyday AI runs on-device; Cloud AI to Google’s Gemini is opt-in and off by default, and when on it sends only a daily signal summary (sleep hours, resting heart rate, steps, activity) with your question. Flo and What to Expect both run cloud accounts and carry the privacy records noted above.

Bottom line

For most readers, the choice between Flo and What to Expect comes down to whether you want AI plus a large reviewed library and anonymous community (Flo) or due-date birth clubs and book-brand familiarity (What to Expect). Both are free to start and available on iPhone and Android. Flo’s privacy obligations are more visible because a federal consent order placed them on the record; What to Expect’s are embedded in a media-company model that Mozilla found sells your data to advertisers. Read both privacy policies before you install.

If you are an iPhone user on iOS 26 or later and the privacy sections above are what you came for, myCocoon is on the App Store today. It is the smaller, iOS-only option, no Android app and no community, built so your HealthKit signals stay on your phone and your everyday AI runs on-device. Read the full head-to-head in myCocoon vs Flo and where your pregnancy app data actually goes first if you want it.

§