The Apple Watch app is now free. Logging from your wrist, and seeing the last feed on your watch face, used to need Baby Duo Plus. Not any more: the watch app, its three buttons and the complication are free for everyone. Baby Duo now explains itself. When you create your family, four short steps show the two gestures that matter — one tap logs, holding the same button opens the detail — and the last step logs your first feed for real, so you start with the counter already running. And each screen explains itself where it matters. Sleep, History, Guides and Settings each say what they are the first time you open them, once, and never again. Baby Duo Plus keeps multiple babies, the Sleep tab, the pumping log, next feed reminders, exporting the history and seven of the eight guides.

The night you don't remember, worked out from the feeds you did log. Baby Duo now has a Sleep tab. In the morning it shows the stretches your baby slept last night, deduced from the feeds you already recorded, and you confirm them with one tap. Nothing is saved unless you look at it first. Daytime naps are asked, not assumed. In the daytime a gap between feeds doesn't mean they were asleep the whole time, so the app asks and you set the times. It won't fill your history with sleep that didn't happen. Once there are enough sleep stretches of your baby's own, the tab works out when the next nap is due — from their rhythm, not from a table for their age. Until there are, it says exactly that, and how many are left. The first card comes in four shapes: a countdown, the whole day as an arc, a timeline, or a sleep-pressure gauge. Pick the one you read best at three in the morning. Also fixed: the birth date no longer shifts one day back.

Multiple babies, each with their own. With twins, or with a second child, everything no longer lands in the same list: each baby has their own history and their own metrics, and you switch between them from the top in one tap. If you only have one, the screen stays exactly as it was. The first baby is free. Adding a second one comes with Baby Duo Plus. The history no longer takes a long scroll. Past days come collapsed, with a summary of what happened that day — how many feeds, how many diapers, how many sleeps — and open with one tap. And inviting the other person no longer means reading out six characters at four in the morning: in Settings, "Share invite" sends a link that puts them in the family with one tap.

Guides: eight of them, in a new tab. The essentials of the first weeks, in short carousels you can read in one sitting: how much milk by age, what diapers look like week by week, the milestones of year one, what to pack in the bag, and three on US hospital checks, checkups and paperwork, marked as such. The warning signs are free for everyone. What never to do and when to call the pediatrician is not behind any payment. The other seven come with Baby Duo Plus. Every figure says which public page it comes from — the American Academy of Pediatrics, and Social Security for the paperwork — and every guide ends with its sources and its disclaimer. They do not replace your pediatrician, and they say so. And at the top of the tab, a tip for today, picked from what you log: if you logged diapers today, it talks about diapers. Your data decides which one you see; the text is the same for everyone and never judges a particular baby.

Your history now always says who logged what. Anything you logged from the widget or the Apple Watch in the first seconds after opening the app could be saved without an author, and after that there was no way to know who had given that feed. Fixed. And we now find out when the app fails: • If Baby Duo closes on its own at four in the morning, we get a report of what happened and on which iPhone. Before, the only way to know was you writing to us. • Nothing you log is ever sent: no feeds, no diapers, no sleep, no notes, not your baby's name. • The first time you open this version we explain it in full, and nothing is sent until you close that notice. You can turn it off any time in Settings → Diagnostics.