Which pregnancy apps work with Apple Health?

The short answer

Most pregnancy apps barely touch Apple Health. Of the nine we checked, only Ovia writes its data back into Apple Health, Flo reads it one way, Glow and Pregnancy+ sync with permission, and What to Expect, BabyCenter, The Bump and Peanut disclose no integration at all. myCocoon is the only one here that reads several Health signals, sleep, resting heart rate, steps, mood and blood pressure, and watches sleep, resting heart rate and steps each against your own rolling baseline, raising a quiet nudge when one of them drifts instead of showing a number you have to open a screen to read. The day’s readings are gathered into a daily digest on the phone. Reading them jointly, as one correlated picture, is on the roadmap, not shipped. The raw history lands in an on-device store that never syncs to iCloud, and its everyday AI runs on the iPhone itself, so the core experience needs no cloud at all. Cloud AI is a separate, off-by-default opt-in.

This guide is the longer version. Who reads what, in which direction, what each app does with it, and the one Apple rule that explains why so few of them read much at all.

Last reviewed: 23 June 2026.

How we checked which apps use Apple Health

We looked at nine pregnancy apps and asked four plain questions of each: does it read Apple Health, does it write to Apple Health, what data moves, and what the app does with that data. The sources are each app’s App Store privacy label, its own help and integration documentation, and where relevant the Mozilla Privacy Not Included audits.

A note on language. When an app does not list Apple Health anywhere it can document one, we say “no integration disclosed,” not “no integration.” The absence of a published disclosure is what we can verify. The four questions are deliberately narrow:

• Reads Apple Health. Can the app pull data your watch and phone already collected, like sleep or heart rate?
• Writes Apple Health. Does the app push its own entries back so they appear in the Health app?
• What data. Which signals actually move, where the app says.
• What it does with it. One-way import, two-way sync, or per-signal nudges judged against your own baseline.

Which pregnancy apps read or write Apple Health?

Two patterns fall out of that table. First, Apple Health integration is rare and shallow. Most of these apps log into their own database and never read what your watch already measured. Second, the apps that do touch Apple Health touch it in very different ways, and the direction matters more than the checkbox.

Why does Apple Health data have to stay off iCloud?

Apple’s rules are explicit that apps must not store users’ health data in iCloud, and apps that handle health data carry obligations the rest of the App Store does not. (Health Privacy Overview, Apple, 2023) That one line is the hidden constraint behind every row in the table above.

Here is why it bites. A pregnancy app usually wants to sync the things you type, your due date, your appointments, your journal, so a new phone picks up where the old one left off. The simplest way to do that on iOS is iCloud. But the moment an app also reads your Apple Health data, that same iCloud pipe is off limits for it. The health reads cannot ride along. So an app designing for Apple Health faces a fork, and you can read each app’s answer straight off the table.

• Read very little, or nothing. What to Expect, BabyCenter, The Bump and Peanut keep their own logs and skip Apple Health, which sidesteps the rule entirely.
• Read and forget. Flo imports a one-way feed and is scaling the broader sync back, so there is less to keep off iCloud over time. (Flo Help Center)
• Split storage in two. Keep one store for what you type, which can sync, and a separate local-only store for everything read from Apple Health, which never syncs to iCloud.

The third answer is the one myCocoon takes. The app keeps two separate stores. One holds what you enter yourself, due date, kicks, appointments, bump photos, journal, and syncs through your iCloud account. The other, where every Apple Health signal lands, lives on your phone only. It is not connected to iCloud and not connected to a myCocoon server. The full raw history of those signals stays in the on-device store. Cloud AI is off by default. Turn it on and a structured briefing rides along with your question: your week and trimester, your first name and baby’s name if you have set them, recent symptom names and counts, your mood and sleep trends, and a daily read of your recent sleep hours, resting heart rate, steps and activity. What is never sent, in either mode, is your journal text, your photos, your voice recordings as audio, your blood pressure, and the rest of your Health history. (myCocoon privacy) The longer walkthrough is in how a pregnancy app reads what is already on your phone.

That split is also why mood is newly in play. Apple added a structured way to log how you feel in iOS 18, on a scale from very unpleasant to very pleasant with a labelled feeling and the situation that prompted it. (HKStateOfMind, Apple Developer) It is one more Health signal an app can read, and one more it then has to keep off iCloud.

What each app does with Apple Health, one by one

Ovia is the only app here that writes its own data back into Apple Health, an opt-in setting, so your Ovia entries can appear in the Health app alongside everything else (Ovia App Store listing). It also reads activity from Fitbit, steps, sleep and weight, rather than from Apple Health directly. Ovia is owned by Labcorp and distributed heavily through employers and health plans (Labcorp, 2021).

Flo reads Apple Health one way. It imports a limited feed and does not write its own entries back, and its help documentation describes the broader Apple Health sync being scaled back. (Flo Help Center) So Flo can pull from Health, but it is a narrowing, read-only relationship rather than a two-way sync.

Glow Nurture offers a two-way sync. Its listing describes syncing data between Glow and the Apple Health app with your permission, though it does not publish exactly which data types move. (Glow App Store listing) If you want Apple Health reads and writes in one app across the most devices, Glow is it.

Pregnancy+ also syncs with Apple Health, but only after you grant access, and it cannot read or write anything until you do. (Pregnancy+ App Store listing) The specific data types are not published. Like Glow, it serves third-party ads and uses cross-app tracking, so the Health sync sits inside an ad-supported product.

What to Expect and BabyCenter, both published by Everyday Health, disclose no Apple Health integration. Their App Store privacy labels list no Health & Fitness data type, and both keep their own in-app logs instead. Mozilla’s Privacy Not Included audits flag both for permitting the sale of online data to advertisers (Mozilla, What to Expect; Mozilla, BabyCenter).

The Bump surfaced no Apple Health integration either. It runs its own trackers for weight, contractions and kicks with cloud backup (The Bump App Store listing), so the data stays inside The Bump rather than flowing through Apple Health. Mozilla rates it among the more concerning trackers for ad-funded data sharing.

Peanut is a community product first, with a pregnancy tracker added in October 2024, and discloses no Apple Health integration. (Peanut App Store listing) Its tracking lives in-app. If you came for Apple Health, Peanut is not the reason to install it.

myCocoon reads Apple Health and never writes to it. It pulls sleep, resting heart rate, steps, mood and blood pressure, then watches sleep, resting heart rate and steps each against your own rolling baseline, raising a quiet nudge when one of them drifts rather than showing a number on a screen you have to remember to open. A run of short nights, a resting heart rate above your normal, an unusually high-activity day each trip their own rule; the day’s readings are gathered into a daily digest on the phone, and reading them jointly, as one correlated picture, is on the roadmap, not shipped. The raw history of those signals lives in the local-only store described above and never syncs to iCloud, and the app’s everyday on-device AI, journal cleanup, photo captions, pregnancy-story narration, runs on the iPhone with Apple Intelligence, so the core experience works with no cloud at all. Cloud AI is a separate, off-by-default opt-in. There are no ads and no data sale. The honest scoping: myCocoon is iOS only, needs iOS 26 or later, and is new, so it has the narrowest reach of anything here and excludes Android and older iPhones. It is on the App Store today.

Common questions

Which pregnancy apps write data to Apple Health? Of the apps we checked, Ovia is the only one that writes its own data back into Apple Health, and it is an opt-in setting. Flo reads Apple Health one way without writing back. Glow and Pregnancy+ sync in both directions with permission. What to Expect, BabyCenter, The Bump and Peanut disclose no Apple Health integration.

Does Flo sync with Apple Health? Flo imports some Apple Health data as a one-way, read-only feed and does not write its own entries back. Flo’s own help documentation notes the broader Apple Health sync is being scaled back. So Flo can read from Apple Health, but it is not a two-way sync, and it is narrowing over time.

Why can’t pregnancy apps store Apple Health data in iCloud? Apple’s rules are explicit that apps must not store users’ health data in iCloud. An app that syncs your due date and journal through iCloud therefore cannot pour your Apple Health reads into that same sync. Apps either read very little, read and forget, or keep Health data in a separate local-only store on the device.

Which pregnancy app reads the most Apple Health signals? myCocoon reads several signals, sleep, resting heart rate, steps, mood and blood pressure, and watches sleep, resting heart rate and steps each against your own rolling baseline, nudging you when a single signal drifts rather than displaying one number. The day’s readings are gathered into a daily digest on the phone; reading them jointly, as one correlated picture, is on the roadmap, not shipped. The raw history stays in an on-device store that never syncs to iCloud. Cloud AI is off by default; turn it on and a structured briefing travels with your question: your week and trimester, your first name and baby’s name if set, recent symptom names, your mood and sleep trends, and a daily read of your sleep hours, resting heart rate and steps. Your journal text, photos, voice audio and full Health history are never sent. It is iOS only and needs iOS 26 or later, so the reach is narrower than the cross-platform apps.

Can a pregnancy app read my Apple Watch heart rate and sleep? Yes, if the app asks and you grant Apple Health permission, because your watch writes resting heart rate and sleep into Apple Health. Whether an app actually uses them depends on the app. Flo, Glow, Pregnancy+ and myCocoon can read Apple Health. What to Expect, BabyCenter, The Bump and Peanut disclose no integration.

Is myCocoon on Android, and what iPhone does it need? No. myCocoon is iOS only and requires iOS 26 or later, which excludes Android phones and older iPhones. That is a deliberately narrow base. If you are on Android or an older iPhone, the cross-platform apps in this guide, like Flo, Glow or Pregnancy+, are the ones you can actually install today.

Is there a private pregnancy app that keeps health data on your phone? myCocoon keeps the Apple Health signals it reads, sleep, resting heart rate, steps, mood and blood pressure, in an on-device store that never syncs to iCloud or to a myCocoon server. Its everyday AI runs on the iPhone itself, so the core experience needs no cloud. Cloud AI is off by default; switch it on and a structured briefing goes to the cloud alongside your question: your week and trimester, your first name and baby’s name if set, recent symptom names, your mood and sleep trends, and a daily read of your sleep hours, resting heart rate and steps. Your full Health history, journal text, photos and voice audio are never sent. It is iPhone only on iOS 26 or later, with no Android version and a smaller library than Flo or What to Expect.

Bottom line

If you want an app that pushes your pregnancy data into Apple Health so it sits alongside the rest of your record, Ovia is the one that writes. If you want a two-way sync, Glow or Pregnancy+ do that with permission, both inside ad-supported products. If you are choosing by where your Apple Health data ends up, the question is not whether an app reads it but where the raw numbers go afterward, and only an app built to keep them off iCloud can promise they stay on your phone. That is the bet myCocoon makes, for the narrow slice of readers on a recent iPhone. If you are on an iPhone running iOS 26 or later and want one app that watches your sleep, resting heart rate and steps against your own rolling baseline and nudges when one drifts, keeps the raw history in an on-device store that never syncs to iCloud, and runs no ads and no data sale, myCocoon is on the App Store today. If you are on Android or an older iPhone, Flo, Glow or Pregnancy+ are the ones you can actually install.

For the wider field of how these apps compare on price, community and content, see the best pregnancy apps for 2026. For where each app’s data actually travels, see pregnancy app privacy.

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