Every feature in Preg, by phase.
Preg is built around a single idea: pregnancy isn't one experience, it's three. The app knows that, and reshapes itself accordingly. Below is everything in it, from week-aware daily prompts to the contraction timer to the dual-partner mood tracker. The same data layer underneath, three very different homes on top. And as of this September it isn't only on our two phones — you can install it on yours.
Preg is on the web now — the same app, installable from your phone's browser in about a minute.
Pregnancy phase — the long stretch.
Most of the app lives here. Forty weeks is a long time to keep paying attention. Pregnancy mode is the part of Preg that's about not missing things: not missing how Megan feels, not missing what's coming next week, not missing the OB's question, not missing the kick that felt different.
Home dashboard
The home screen carries today's date and the day of the week, a pregnancy progress bar, the current week and trimester, weeks remaining, and the due date. It is the first thing either of us sees when we open the app, and it's deliberately the calmest screen in the whole product. We open it many times a day. It should feel like a porch, not a cockpit.
Daily journal & check-in
Once a day, Megan gets a rotating prompt — sometimes about how she slept, sometimes about something specific to her week, sometimes just an open box. She picks a mood on a five-emoji scale, ticks any symptoms she had, takes an optional photo, and writes anything else she wants. It takes thirty seconds when she's tired and three minutes when she's not. It's how the rest of the app gets its signal.
Mood & symptom history
Every check-in feeds a history view that shows mood and symptoms over time. Patterns surface naturally: headaches cluster around week 18, her mood always dips on Sundays. It's the kind of pattern-spotting clinicians do in their heads. The app does it on the screen.
Medication tracker
A daily checklist. Prenatal, anything the OB has added, anything occasional. The history view shows what's been taken and what's been missed. Nothing dramatic happens if a day gets skipped — the app just keeps the record. Megan can show it to her provider in five seconds if it ever comes up.
Appointments — shared between us
Every appointment has three sections: prep notes (questions to ask), visit notes (what was said), and follow-up (what we do now). Both of us can edit either side of it. Attachments go in too — ultrasound prints, lab slips, the after-visit summary. It's the same shared Firestore document, so if I add a question to the prep list on the way to the appointment, it shows up on her phone before we walk in.
This Week
Forty weeks of curated content — one tagline, one note on baby size, key developments, and a deeper-read page. The tone is the tone of a friend who happens to have read the books, not a clinic pamphlet. When Megan opens it on a Sunday morning, she should learn one new thing and feel like the week ahead is held.
Likely Next
A week-aware list of what might be around the corner — a symptom that often shows up next, a milestone that's near, an emotional shift that's typical, or a practical thing (a bag to pack, a class to book) that's good to start on. It's predictive without being scary. It's the thing I wish a nurse had handed me at every prenatal appointment I've ever sent a patient to.
Symptom pattern intelligence
Quiet in the background. It watches the journal entries and notices when something repeats — a symptom that keeps showing up on certain days, a mood that keeps following a certain kind of appointment. It surfaces a small card on the home screen when there's something worth knowing. Nothing alarming, nothing pushy. Just I noticed this.
Kick counter — with an undo button
Tap once per kick. Counts up. Stops on its own. Megan can run a session in the background while she does anything else. There's an undo, because she will sometimes tap by accident, and we wanted that to be a non-event. The history shows session length and total kicks, which means at her next appointment we can answer the how often is the baby moving question with actual numbers instead of I think a lot?
Movement & wellness
Role-aware, trimester-by-trimester guidance for running, cycling, yoga, weight training, and hiking. Every activity has a safety badge — green, yellow, red — for the trimester Megan is in, with a short stop if list under it (warning signs that mean stop now and call). The copy is conservative because I work with patients and I know what I'd want my own family to be told. The screen knows whether the person looking at it is the pregnant person or the partner, and adjusts accordingly.
Workout log
A small companion to the wellness guide. Megan logs the workout, how it felt, and anything she'd want to tell future-her. The Trends Dashboard pulls from here to show patterns — like the fact that she always feels better on days she walked, even when she didn't want to walk.
Cravings & aversions map
Half useful, half charming. A grid of small entries — what she wanted, what she couldn't stand the smell of, what week it happened. We will read this back to our kid someday. It's the most-screenshotted screen in the app, by far.
Name Board
A shared list of names. Both of us add to it. Both of us can give a name a small star or a small no. We have not agreed on a name. This screen has more drafts on it than any other screen in the app.
Partner Inner Life
A reflective screen for me. A small set of rotating prompts about what I'm feeling and what I'm noticing — separate from anything Megan logs, separate from anything she sees. The first time I sat with it I wrote four hundred words about feeling like I didn't know what I was doing. It helped. The app holds the entries quietly. That's the whole feature.
Trends Dashboard
Nine sections, one scrollable screen — mood, symptoms, workouts, kicks, a calendar heatmap, trimester breakdown, appointment timeline, and two summary cards. It's the screen we open when we want to look back. There's a dedicated page that walks through every section: Trends & Data.
Daily Brief
Every morning, an AI-generated paragraph that reads the last day or two of Megan's entries and writes her — and me — a short personal note. Role-aware, so my version mentions her, hers mentions me, and both of us get a thing to think about for the day. Stored in Firestore so we can scroll back through them later.
Today's Insight cards
Small contextual cards that appear on the home screen when there's something specific worth saying — a streak, a pattern, a milestone, a gentle reminder. They never insist on being read. They're easy to dismiss. They're polite.
Reference library
Curated entries on medications, lab tests, procedures, and terms. Written in plain English, edited with provider input. Every entry tries to do one thing: make a real two-minute conversation with a provider go better. None of it is medical advice. All of it is what I'd tell my own sister if she asked me.
Bookshelf — EPUB & PDF reader
A small reader for the actual books in Megan's pregnancy reading list. Metadata and cover extraction, table of contents, adjustable font size, light and sepia themes, and it remembers her position when she comes back. It's not trying to be Kindle. It's trying to be the right amount of reader for someone who's tired.
Prepare
Six checklists (hospital bag, registry, what to do before maternity leave, etc.) and eight smart question lists for OB appointments, the anatomy scan, the GD test, the hospital tour, and so on. Megan can star questions, add her own, and they flow into the appointment prep section. Anything she stars is the first thing she sees the next time she opens that appointment.
Contacts Hub
One shared, real-time list of the people in the picture — providers, doulas, family, close friends. Tap to call, tap to text, no thinking. The quick contacts are also wired into Labor Mode so when the time comes we don't have to scroll through a contacts list.
Timeline
Shared, real-time, week-grouped. Bump photos, ultrasounds, milestones, the small moments. Both of us can add to it. It's where the photos that don't belong on the family bulletin board live — the ones just for us.
Shared real-time chat
Inside the app, just for the two of us. Text, photos, GIFs, emoji reactions, reply-to, typing indicators, read receipts, and small milestone celebration cards. It's where I send Megan a kick-counter screenshot from across the apartment, or where she leaves me a note before bed because she fell asleep before I got home from a shift.
Labor phase — the few hours we'll remember forever.
Labor mode is what the app turns into when we flip the switch. Fewer screens. Bigger buttons. One question per screen, mostly. I wrote it imagining that I'd be reading it out loud to Megan with both of our hands shaking.
Contraction timer with 5-1-1
One big button. Press at the start of a contraction, press again when it ends. The timer remembers the gap between them and shows the 5-1-1 status (five minutes apart, one minute long, for one hour) in plain language at the top. When 5-1-1 is met, it shows a small call the hospital nudge — not a klaxon, just a calm line of text.
Hospital bag checklist
Pre-filled, editable, checkable. The list is divided into Megan's bag, the baby's bag, and my bag. The same checklist lives in the Prepare section ahead of time, but in Labor mode it's right there so anything we missed becomes obvious in the first thirty seconds.
Birth preferences
A single screen with the things we want the L&D team to know. Written by Megan, reviewed with our provider. Not a wishlist — a small clear set of preferences that anyone can read in twenty seconds. We can share it from the app directly to email or messages so the on-call team has it before we walk in.
Partner coaching cards
For me. Short, specific things to do or say during labor — counter-pressure positions, breathing patterns, the things to ask the nurse, the things to ask Megan. Written in my voice, by me, after reading three doula books and asking my favorite L&D nurses for their best advice. Big text. One thing per card.
Family update share sheet
Pre-written labor and birth updates that we can edit and send out without thinking. We're at the hospital, contractions are 4 minutes apart, baby's here, mom is okay, more soon. One tap to a group thread, or one tap to the Village.
Send Labor Alert
The biggest, easiest-to-find button in Labor mode. One tap, and the Village (the family bulletin board) lights up with a glowing pinned card at the top and a soft toast for everyone watching. Our families will know within seconds, without us having to write anything.
Postpartum phase — the months I'm most worried about.
The hardest part of pregnancy isn't the pregnancy. I see it at work. Postpartum mode is the part of the app I argued with myself the most about, because the kinds of things worth tracking are also the kinds of things you do not want to feel like you're tracking. So everything here is quieter than the rest of the app, and there's a lot less of it.
Recovery tracking
Megan's recovery, in her own words. A small daily log — how she's feeling physically, anything she'd want her midwife to know at the next check-in, anything she'd want her future self to know. Photos optional. Read by no one but her unless she shares it.
Dual-partner mood tracking
Both of us, every day. Two five-emoji scales, two small free-write boxes. The point is not to compare. The point is to catch a slide in either of us before it gets long. PPD in the mother gets missed; PPD in the partner gets missed even more often. The Trends page shows our two lines side by side so if one of us dips for two weeks we can see it.
Feeding log
Bottle or breast, which side, how long, how much. Five seconds to log, two taps from anywhere in the app. It's the screen I'm sure will get used the most when we're in it.
Sleep + diaper log
One screen, two logs. Sleep with start and stop times. Diaper with wet or dirty and time. Both feed into the trends view so we can answer questions like how much sleep did the baby get in the last 24 hours the way we answered how often is the baby moving earlier.
Partner prompts
Small daily prompts for me. The kind of things a good doula would whisper. Take the night feed tonight. Bring Megan water when you bring her the baby. Tell her one specific thing she did well today. Half are the kinds of prompts I'd never have thought to give myself.
Visit reminders
For the postpartum check-ins and the pediatrician appointments. Same shared appointment system as in pregnancy mode — prep notes, visit notes, follow-up, attached documents. The continuity matters.
The things the whole app runs on.
Some pieces are not specific to any one phase. The bulletin board for our families, the AI librarian, the games we play to pass time, and the trends dashboard that pulls from everything else. They each have their own page on this site.
The Village
A private cork-board web app for our families. Reactions, comments, real-time updates, and a one-tap labor alert. More →
Ask The Books
Vertex AI Gemini reads six pregnancy textbooks with retrieval and citations. How it works →
Trends & Data
Nine sections, one screen. Mood, symptoms, workouts, kicks, heatmap, trimester breakdown, appointments. See it →
Games Hub
Tic-Tac-Toe, Connect Four, Daily Word, Chess, Checkers. All async. All synced. Play →