Which Boob? doesn't collect any information about you. Your feeds stay on your devices and in your own iCloud, and we never see them.
This page explains what that means for the Which Boob? app, its widgets, controls and Siri shortcuts, and its Apple Watch app ("the App"). It covers version 3.0 and later.
Last updated: November 2026
What We Collect
Nothing. The App has no accounts, no ads, no analytics and no third-party code. It doesn't send anything about you, your feeds or your device to us or to anyone else, and we don't run any servers that could receive it.
Your Feeds
A feed is which side you tapped and when, plus when it was last changed so edits come out right on every device. That's all the App stores. It doesn't ask for your name, your baby's name or anything else.
Your feeds are saved on your device, where the App's widgets, controls and Siri shortcuts can read them too. Your Apple Watch keeps its own copy, which it keeps in step with your iPhone directly.
iCloud
If you're signed in to iCloud, the App keeps a copy of your feeds in your own private iCloud database, using Apple's CloudKit, so they appear on your other devices signed in to the same Apple Account. Apple stores that copy as part of your iCloud account, and Apple's privacy policy covers it. We can't see it or get to it.
If you're not signed in to iCloud, your feeds stay on your device.
Sharing With a Partner
Sharing is off until you turn it on. When you choose Share with Your Partner, the App creates an iCloud share of your feeds, and you send the invitation however you like, such as in Messages. Only the people you invite can join. The share is never public.
Your partner joins with their own Apple Account, and you both see and can add to the same feeds. iCloud shows each of you the other's name from their Apple Account, so you know who you're sharing with. Nothing goes through us.
You can see who's joined, remove someone or stop sharing at any time from the About screen. Your partner can stop sharing there too, and keeps the feeds they already have.
Deleting Your Feeds
You can delete a feed by swiping it away, or delete them all with Erase All Feeds on the About screen. Either way, they're removed from every device that shares them.
To keep deletes in step across devices, the App remembers which feeds were deleted, in your own iCloud. To remove everything the App keeps in iCloud, open Settings, tap your name, then iCloud, and delete Which Boob?'s data from your iCloud storage. Deleting the App from a device deletes the feeds saved on that device.
Feeds From Earlier Versions
The first time version 3.0 opens, it copies the feeds the previous version saved on your device into its own list. From then on they're treated like any other feed. The old file is left where it was, on your device.
Siri and Shortcuts
When you ask Siri to log a feed or which side is next, Apple handles your voice request, and Apple's privacy policy covers it. The App only receives the request itself, such as which side to log.
Crash Reports
If you've chosen to share analytics with app developers, Apple may send us anonymous crash reports, which we use only to fix bugs. You can turn this off in Settings > Privacy & Security > Analytics & Improvements.
Your Choices
The App collects nothing, so there's nothing to opt out of. These are the choices you do have over your own feeds:
- iCloud: your feeds sync through your own iCloud only while you're signed in to it. If you're not signed in, they stay on your device.
- Sharing: off until you turn it on. You can see who's joined, remove someone or stop sharing at any time from the About screen.
- Deleting: swipe a feed away, or use Erase All Feeds on the About screen. To remove everything the App keeps in iCloud too, see Deleting Your Feeds.
- Crash reports: Apple only sends these if you share analytics with app developers. You can turn that off in Settings > Privacy & Security > Analytics & Improvements.
Earlier Versions
Versions of Which Boob? before 3.0 showed ads and used Microsoft's App Center to collect crash reports and usage statistics. Version 3.0 removes both, and this policy replaces the one from 2015.
This Website
This website doesn't use cookies, ads or analytics. The Left Boob and Right Boob buttons on the home page don't save or send anything. It's part of chrisntr.com, which is hosted by Vercel. Like any web host, Vercel receives the requests your browser makes to load the pages.
Children
The App is meant for parents and carers. It collects nothing from anyone, children included.
Changes
If this ever changes, we'll update this page and the App Store listing before the App does.
Contacting Us
If you have any questions about this Privacy Policy, please contact us at: chrisntr@gmail.com