What's newVersion 1.0.4September 4, 2026

Two babies. Two timers. One release.

Version 1.0.4 is the biggest update ProbaBaby has shipped, with 17 changelog entries. The tracking engine itself was rebuilt so two babies can be tracked at the same time, instead of one baby twice.

See everything built for twins

Twins

Twins, rebuilt from the ground up

Track two babies at once, not one baby twice. Two feeding or sleep timers run side by side on one device, each with its own pause math, its own history and its own reminder.
The baby pill in the log dock now picks whose timer you are driving. It no longer switches the whole app.
The twin you are not looking at keeps a live chip with a ticking timer. One tap flips to it.
Log for one baby, the other, or both. A / B / Both chips sit on the feeding, sleep and diaper flows, and read All once there are three babies.
Compare is a first-class Analytics tab: feeds, sleep and diapers day by day, plus an overlaid WHO growth chart for both babies.
Twin pregnancies get a twin-adjusted delivery window beside the medical 40-week due date, never instead of it. Twins target 37+0, triplets 35+0, and chorionicity from your 11–14 week scan moves the target earlier for shared-placenta twins.
Twin notes for every week from 4 to 38, plus one shared note for 39 onwards. That is 36 notes, all in 32 languages.

Baby tracking

Your baby's day on one 24-hour clock

The 24-hour activity clock became a living day face. Feeds, sleep, diapers and awake time draw as rings over a day-to-night diorama, one card per baby, with the baby's name signed on the dial.
The same face runs on the Lock Screen widget and on the Apple Watch.
Day & Night log, redesigned. The log you use at 3am, rebuilt around what actually goes wrong at 3am: bottle memory pre-fills the last type and amount, backdating a session takes one tap, and a timer you forgot to stop can be corrected afterwards.
New: a solid food log. It joins Bottle and Sleep in the tracker dock, logs instantly like a diaper, and gets its own by-type breakdown. Solids never count as milk, so they never reset the feeding interval.
Solids start at 5 months by default, adjustable between 4 and 8, read off corrected age, with a per-baby override.
Time since the last feed now counts from when the feed started, not when it ended, and the last-used side is marked on the L/R selector.
A floating session pill follows you across the app while a feed or sleep runs, and feeding reminders are armed per baby, so stopping one twin's alarm never touches the other's.

Pregnancy

Five zones, and 42 weeks of drawn baby sizes

The Pregnancy Overview went from ten stacked cards to five focused zones under the hero.
Illustrated baby-size comparisons replace the emoji for all 42 weeks, drawn twice each so the small version reads on a widget.
For multiples, the weekly size line adds up: together your babies weigh about this much, with an honest note that twins commonly diverge from week 28.
Medical tests moved into trimester section cards with inline rows, and early-birth guidance moved into grouped cards.
The doctor-visit summary was redesigned, and all 8 export documents were rebuilt on one print system: US Letter, brand-pink letterhead, measured row heights, page numbers, and no silent truncation.
Twin pregnancies gain their own weekly notes, a twin medical-test card per trimester, and a scan-cadence line for shared-placenta twins.
Pregnancy supplements now wrap up cleanly at the end of pregnancy, with the reminders torn down and a prompt for what comes next.

Tools

30+ tools rebuilt on verified sources

Growth percentiles come from one engine built on the WHO Child Growth Standards. Four home-made growth tables were deleted, plus a fifth nobody had found: a chart reading the boys' curve for every baby.
The Due Date Calculator was rebuilt on ACOG's dating rules. Conception, implantation, fertility window and ovulation were rebuilt to agree with each other, and with their own screens.
Weight Gain now handles twins, on the IOM 2009 twin table stratified by BMI. It had been telling twin mothers to aim under their own total.
Three health inputs were corrected: Water Intake had invented its trimester ladder, the Caffeine Calculator gave every reader the pregnancy limit, and the Iron Calculator recommended liver to pregnant women.
Hospital Bag was rebuilt around 72 items, 7 onboarding questions and country data for the 128 countries you can select. Its personalization and its persistence had both been silently doing nothing.
Baby Registry was rebuilt around 70 items with what, why and when, and adapts to your feeding plan and your baby count.
Tools now follow the accent of the screen they open from, show one navigation bar instead of two, and stopped scrolling sideways at accessibility text sizes.

Planning

Planning redesigned, plus a new Period Tracker

Every Planning screen was redesigned on one accent per side, brand pink for Mom and blue for Dad: two overviews, eight tabs, twelve log sheets, ten history lists.
The structure was cut down with it. Track went from six zoned cards to two, Dad Track from five cards to one, and Health gained a chart switcher.
Dad's data reached parity with Mom's: export, history, edit, delete, and no more silent save-loss.
New: a five-tab Period Tracker for new moms, with Overview, Calendar, Track, Health and Learn, its own Home card and its own widget face.
It is opt-in and off by default, and it shares one cycle engine with the Planning module, so a mom who switches later keeps her whole history.
Fertility sits behind an intent setting, avoiding or not sure or trying again, and stays locked until two regular postpartum cycles exist.
A Wilcox-shaped fertility curve sits on the Mom Overview, next to Fertility Insights.

Design

One design language, everywhere

New: Simple Mode. One switch in Profile, under App Settings, renders the whole app flat. No glass, no gradients, no background washes, and your light or dark choice untouched.
It is a look, not a mode you get stuck in. It combines with Light, Dark and System rather than replacing them, and it steps aside in Night mode, which is already flat.
We replaced the emoji icons with a custom symbol set: 43 drawn symbols for family members, moods, hair types, dock types and baby milestones.
The generic tinted circle behind an icon has been replaced. There are two icon languages now, a seal for things you earn and a neutral glass chip for everything functional, with the color in the glyph rather than the container.
One Theme Color pick, Pink or Blue or Purple, now sets the accent and the Home background together, so the two can never disagree. The separate background picker was removed.
Overview tabs, module settings and the doctor-visit screens were all redrawn onto the same shape, and badges joined the glass language as tinted text on a glass surface.
Dark mode fixes: card separators and dashed dividers that were invisible in dark mode are visible again.

iPad, Watch, widgets

iPad layouts, widgets, Watch and Live Activities

Two-column iPad layouts across the whole app: 23 module tabs, Home, and the logging dock. Two columns need a 728 pt page and three need 1072 pt, measured from real width, so Split View, Stage Manager and a Mac window each get the right layout instead of a stretched phone screen.
iPad Home cards carry iPad-specific content, not just wider boxes: a wide clock hero with today's tiles, twins side by side in their own columns, and a today strip for pregnancy.
The Home Screen and Lock Screen widgets were redrawn on one design language, with painted plates that read correctly on any wallpaper in light and dark. The app ships 17 widget kinds.
Eight of those widget kinds can be pinned to a single baby, so a twin family can keep one widget per baby. The Quick Log widget also has a Both face.
All 8 Live Activities moved onto the design palette: one accent, orange reserved for pause, snooze and wake, 48 pt controls, and baby names in bold.
The Apple Watch app was rebuilt from scratch on the phone's design system: around a dozen screens, single babies and twins, the same 24-hour day clock, a Journey Dial for pregnancy, and a night mode for checks in the dark.
Seven Apple Watch complication kinds are available, from pregnancy week to last feed.

Family

Faster login, sturdier family sync

Login and the first sync are much faster, and no longer freeze on a long history.
Either parent can stop a session the other started. The live session is now resolved family-wide, not from whichever phone opened it.
Feeding and sleep can no longer overlap across devices. The rule is enforced device to device, with a server check behind it.
Logs made offline reach the family once you are back online. The queue that used to strand them is drained.
Big families stopped losing logs past the first 1,000 rows: the pull is paginated now.
The active module is decided by the server, so both parents always see the same mode.
A partner's live session banner names the baby it belongs to, and the last-feed card updates for every active baby, not only the one you are looking at.

Under the hood

Hundreds of smaller fixes

Pages could be dragged sideways. Fixed in three places: every tab's content is pinned to the viewport, the Pregnancy Overview stopped over-reporting its own width, and tool pages stopped drifting at accessibility text sizes.
In-app messages no longer paint over the privacy lock and the Face ID overlay.
Smart Insights crashed with four or more growth measurements. It does not any more.
Logging out keeps your device settings. Preferences that describe the device survive every logout; settings that describe you or your baby are stashed and handed back when you sign in again.
Account isolation runs on login now, not only on logout, on every path into the app.
Notifications follow the active module. Alarms, reminders and Live Activities tear down when you leave the Parent module or sign out, and the server segments its pushes the same way.

Languages

32 languages, better translations

402 keys that had shipped in English and Turkish only were translated into the other 30 languages, filling 12,060 empty cells. A second pass covered 437 more keys.
A few screens are still finishing: 134 keys on the pediatrician and doctor-summary screens are outstanding in Arabic, Hebrew and Filipino, and fall back to English there.
Ukrainian was regenerated from English. The Ukrainian column had been a copy of the Russian one.
Brazilian Portuguese was polished by hand across 122 screens.
1,407 translations that overflowed a tight, non-wrapping slot were shortened to fit.
Hardcoded English was localized across the prediction flow, emergency setup, widgets, the Watch, Home and Profile, and 34 keys that were defined but unreachable now resolve.
The Mom Recovery program content reached all 32 languages.

Reference data

Reference data corrections

23 countries had been showing no crisis hotlines at all since April. One malformed entry was blanking a country's whole support screen; a bad entry now costs one card, never a country.
30 countries were printing the literal text vaccine.DTP.name where a vaccine name belongs. None are now.
The infant anaphylaxis card told the whole world to dial 911, because English is the global fallback. It shows the reader's own emergency number now.
Two badly stale national vaccine schedules were rebuilt, with their government sources re-researched and stamped with a verification date.
The reference set behind all of this covers 240 countries and territories for vaccination schedules, and 128 countries for support resources, early-birth resources and hospital-stay data.

The release before this one

v1.0.3 was a smaller release, and most of it was about the tracking timers.

Version 1.0.3 — June 12, 2026

A Timer Settings page, gathering the feeding and sleep timer options in one place.
Feed-timer presets that follow the baby's age.
Soft caps on tracking sessions that run too long.
A fix for how sleep intervals were merged.
A copy chip on the daily log.

Get the update

ProbaBaby 1.0.4 is on the App Store now, and needs iOS 26. Open the app once you have updated and a short tour walks through what changed, picked for where you are in the journey.

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