What does your baby app do with your data?

You hand a baby app some of the most sensitive information there is: when your child eats and sleeps, their weight, their diapers, sometimes their photos and health notes, all tied to a real little person who never agreed to any of it. So it is fair to ask where that data actually goes. For a lot of apps, the honest answer is further than you would guess, and there is a public record to prove it.

The track record

A privacy analysis by the security firm Surfshark found that roughly 80% of popular pregnancy and baby-tracking apps share user data with third parties. On average they collect 11 of the 38 data types Google lets developers declare, and the most data-hungry app in the review collected 16 and shared every single one. That data can include uploaded photos and videos, health details, and even the list of other apps on your phone, increasingly used both for targeted advertising and to train the AI features built into the apps themselves.

Regulators have already stepped in on the closely related fertility side:

• The FTC ordered Flo Health to change course after finding it shared sensitive data, including the fact that a user was pregnant, with Facebook, Google, and other firms, all while promising users that information would stay private.
• The FTC fined the maker of Premom and permanently barred it from sharing users health data for advertising, after it handed health information to Google and China-based analytics companies without asking.

Different apps, one playbook: collect intimate data, quietly pipe it to third parties through advertising and analytics kits, and hope nobody reads the policy.

Why baby data is different

Two reasons this matters more than the usual story about apps tracking you. First, it is a health record for a person from the day they are born, built without their consent and potentially following them for years. Second, “anonymized” is doing a lot of work in most privacy policies. Sensitive data shared on a supposedly de-identified basis can often be re-identified, and once it is out to a dozen partners, you cannot pull it back.

Plenty of apps handle this responsibly. The point is that you should not have to take anyone's word for it, including ours. So here is how to check.

How to check any baby app in five minutes

1. Read the App Store privacy label (Apple). On any app's page, scroll to “App Privacy.” The section that matters is “Data Used to Track You” and “Data Linked to You.” Tracking means the app shares your data with other companies for advertising. A short list is a good sign; a long one is a flag.
2. Check “Data safety” on Google Play (Android). The equivalent disclosure: what is collected, what is shared, and whether you can request deletion.
3. Skim the privacy policy for four words: sell, share, advertising, partners. Search the page (Ctrl or Cmd-F). How an app talks about third parties and SDKs tells you most of what you need to know.
4. Notice the business model. An app that is free with no obvious way to pay, backed by ads or investors, often makes money from the data itself. An app with an honest subscription usually earns its keep from customers who choose to pay.
5. Ask two questions. Can you delete your data and account? Is your data used to train AI? If the policy is vague on either, treat that as an answer.

Green flags to look for

• Collects little, and says so plainly.
• No “Data Used to Track You” on the App Store label.
• A real paid tier, so the lights stay on thanks to customers, not advertisers.
• Easy data export and deletion, and no data used to train AI without a clear opt-in.

Where we stand

We will say it plainly: YummyYucky is parent-funded, never data-funded. The free tier is paid for by the people who upgrade to Plus, not by selling what your family does. We collect the minimum needed to make the app work, we do not sell or share your data for advertising, and there are no third-party ad trackers riding along. You can read exactly what we do in our privacy policy, and hold every baby app you use to the same test. Your baby's first year should not become someone else's data set.

Related reading

See our honest baby app comparison, what Plus includes, and our guides on introducing allergens and the best first foods.

Frequently asked questions

Sources

• FTC: Flo Health, a fertility-tracking app that shared sensitive health data with Facebook, Google, and others (2021)
• FTC: Ovulation-tracking app Premom barred from sharing health data for advertising (2023)
• Surfshark: pregnancy and baby tracker privacy analysis

Last updated July 2026. Next review January 2027. How we write these: grounded in widely published pediatric guidance (the AAP, WHO, the NIAID 2017 allergen guidelines, and the LEAP study), and pending independent review by a pediatric professional. See our editorial and medical policy for how we research, source, and update these.

This is general information, not medical advice, and has not been individually reviewed for your baby. Always talk to your pediatrician about your baby's diet, introducing allergens, and any reaction. In an emergency, contact emergency services.

Some links in our guides are affiliate links: if you buy through them we may earn a small commission, at no extra cost to you. We only suggest things we'd actually use, and it never changes our guidance.