# Baby Duo — Feeds, diapers and sleep > Feeds, diapers and sleep (iPhone/iPad app by Mauricio Arguelles.) - Source: https://appshunter.io/ios/app/baby-duo/id6798982531 (this page in markdown: same URL + `.md`) - Developer: [Mauricio Arguelles](https://appshunter.io/developer/1620715914) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 17.0 · 12 MB - Languages: American English, European Spanish - Released: 2026-08-27 - Data updated: 2026-09-11 - User reviews in markdown: https://appshunter.io/ios/app/baby-duo/id6798982531/reviews.md ## What is Baby Duo? Baby Duo is a newborn routine log built for four in the morning. One tap and it's done: the feed, the diaper or the nap is logged. No forms, no menus, no waiting for anything to load. If you need to fix the time or note the millilitres, hold the button and the detail sheet opens. SLEEP The night you don't remember, worked out from the feeds you did log. In the morning the Sleep tab shows the stretches your baby slept, and you confirm them with one tap — nothing is saved unless you look at it first. Daytime naps are asked, not assumed: a gap between feeds in the daytime doesn't mean they slept the whole time. Once there are enough sleep stretches of their own, it works out when the next nap is due — from your baby's rhythm, not from a table for their age. Until there are, it says so. The card comes in four shapes; pick the one you read best. The Sleep tab comes with Plus. Logging sleep, and confirming the night, is free. MULTIPLE BABIES With twins, or with a second child, each one has their own history and their own metrics. Switch between them from the top, in one tap. With a single baby nothing appears: the screen stays exactly as it was. The first baby is free. Adding a second one comes with Plus. BOTH OF YOU SEE THE SAME THING There are no two histories to reconcile. It doesn't matter who logged it: the information belongs to the family and syncs on its own. Your partner sees the 4am feed without anyone having to recount the night. WORKS WITH NO SIGNAL Everything is saved on the phone first. In a basement, on a plane or with no bars, logging still costs one tap, and what you logged uploads once the network is back. FROM THE HOME SCREEN The widget shows how long since the last feed, with buttons that log without opening the app. On the Lock Screen, a ring fills toward the next expected feed. And while the baby sleeps, a Live Activity counts on its own. WHAT YOU CAN LOG - Feeds: left breast, right breast or bottle, with a stopwatch or millilitres - Diapers: pee, poo or mixed - Sleep: the same button opens the stretch and closes it - Bath, medication and weight THE HISTORY, WITHOUT 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. THE WEEK AT A GLANCE Feeds per day, average interval between feeds, hours of sleep and diaper counts. Sleep stretches that cross midnight are split across both days, so the bars don't lie. GUIDES Eight short guides on the first weeks: 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 and checkups. Every figure says which public source it comes from, and every guide carries its disclaimer: they do not replace your pediatrician. The warning signs guide — what never to do and when to call — is free. The other seven come with Plus. BABY DUO PLUS A one-time unlock, no subscription: - The Sleep tab: when the next nap is due, worked out from your baby's own rhythm, with the day's plan - Multiple babies, each with their own history and metrics - Apple Watch app, to log from your wrist, with complications on the watch face - Pumping log, with how much was expressed and a reminder every 2, 3 or 4 hours - Next feed reminders, based on the real interval between your baby's feeds, not a fixed time - Seven of the eight guides, with the public source behind every figure - Export the whole history as a spreadsheet, to take to the pediatrician or keep Everything else, including logging from the Home Screen widget, is free. PRIVACY You sign in with Sign in with Apple. The data belongs to your family and only family members can see it. No ads, no tracking. ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Baby Duo Plus | $4.99 | one-time | ## Version history (last 5 releases) ### 3.0.0 — 2026-09-01 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. ### 2.0.0 — 2026-09-01 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. ### 1.2.0 — 2026-08-31 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. ### 1.1.0 — 2026-08-31 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. ### 1.0.0 — 2026-08-27 No release notes. ## More apps by Mauricio Arguelles - [Doble Nueve: Latin Dominoes](https://appshunter.io/ios/app/doble-nueve-latin-dominoes/id6787230279) All apps by Mauricio Arguelles: https://appshunter.io/developer/1620715914 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-11.*