Comparison

Hatch Grow vs Which Boob?

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Hatch Grow

This app helps parents track essential baby data like feedings, sleep, and diaper changes. It provides visual charts and summaries to understand your baby's patterns and development. Optional integration with smart hardware offers advanced tracking capabilities.

Highlights
  • Track feedings (breastfeeding, bottle, pumping)
  • Monitor sleep patterns and naps
  • Log diaper changes
  • Record growth metrics (weight, length)
  • Share data with caregivers and professionals
  • View daily, weekly, and monthly summaries
  • Optional integration with smart scale changing pad
Read full description

Hatch Baby--recipient of the prestigious Mom’s Choice Award--helps you track of all your baby’s most important growth and health data, including feedings, diaper changes, sleep, and much more. Get insight into your baby’s development with visual charts and understand your baby’s patterns with a convenient activity summary. Use the app on its own, or connect it with our award-winning Hatch Baby Grow or Smart Changing Pad--changing pad with built-in, wireless smart scale. Grow measures how much breast milk your baby is drinking at each feeding and automatically syncs to the Hatch Baby app. FEEDINGS - Track breastfeeding or bottle sessions with an easy-to-use, one-tap timer, which allows you to adjust the start time if you forget to start the timer. - Conveniently pause the timer during nursing sessions to switch breasts and record the time for both sides. - Connect to Grow or the Smart Changing Pad (optional) to measure exactly how much your baby is eating at each breastfeeding session. - Capture feeding session notes, like your baby’s formula preference. - View daily, weekly, or monthly summary charts to gain insight into your baby’s eating patterns. DIAPERS - Easily keep track of changes to ensure your baby is drinking enough throughout the day. - Record notes that can be shared with your pediatrician or other caregivers. - Connect to Grow or the Smart Changing Pad (optional) and automatically record diaper changes. - View daily, weekly, or monthly summary charts to gain insight into your baby’s diaper patterns. SLEEP - Track naps and nighttime sleep with an easy-to-use sleep timer, which allows you to adjust the start time if you forget to start the timer. - Discover your baby's sleeping patterns to help her get the best rest. - View daily, weekly, or monthly summary charts to gain insight into your baby’s sleep patterns. GROWTH METRICS - Track your baby’s weight and length gain, and compare his growth percentile to worldwide (WHO) data. - See how your baby grows week-to-week. - Weigh your baby anytime or before and after feedings with Grow or the Smart Changing Pad (optional) and automatically send weights to the app. SHARE WITH CAREGIVERS + PROFESSIONALS - Invite your partner or caregiver to share your baby’s account and record activity. - Receive updates from your baby’s caregiver while you are away, including when your baby last ate or slept. - Export and share your baby's data with your pediatrician or lactation consultant. - Access your baby’s information across multiple devices. PUMPING - Track pumping sessions with an easy-to-use, one-tap timer. - Record amount, duration, and side(s) pumped. DAILY SUMMARY - View a convenient summary of your baby’s diaper count, feeding amount, and total sleep for the day, as well as Hatch Handbook articles providing parenting insights. - Scroll through a log of your baby’s recent activity. - Customize your dashboard to display the activities (i.e. feedings, diapers, and sleep) you track or view most frequently. PHOTOS - Take a photo of your baby every day, play the slideshow, and watch how your baby has grown! - Share photos with family and friends. GROW AND SMART CHANGING PAD (optional) - Use the app on its own, or connect it with Hatch Baby Grow and Smart Changing Pad -- where changing pad meets connected smart scale to help track your baby’s weight gain and feeding amounts. - The Bluetooth-enabled scale measures and records how much your baby eats at each nursing session and syncs automatically with the Hatch Baby app. We love hearing from our customers so please drop us a note at support@hatchbaby.com. Also, check out Hatch Baby’s other app-enabled smart products at www.hatchbaby.com. Instagram - @hatchnursery Facebook - https://www.facebook.com/hatchnursery

About

Which Boob?

This app simplifies tracking breastfeeding sessions, noting the last feed and which side was used. It's designed for ease of use, especially during night feeds, with quick logging options and partner sharing.

Highlights
  • One-tap feed logging
  • Night feed optimized interface
  • Home Screen and Lock Screen widgets
  • Control Center and Action Button integration
  • Siri integration for logging
  • Apple Watch support
  • Partner sharing via iCloud
Features
Read full description

Which Boob? remembers when the last feed was and which side it was on. There are no timers or stopwatches to remember to stop. Tap "Left Boob" or "Right Boob", and that's it. Made for night feeds - Which side is next, in big letters, and big buttons that are easy to hit in the dark - How long it's been since the last feed, always counting - Undo for the 3am mis-tap, and an easy fix for a feed logged on the wrong side or at the wrong time Log a feed without opening the app - Home Screen and StandBy widgets with Left and Right buttons - Lock Screen widgets showing the last side and how long ago - Left and Right controls for Control Center, the Lock Screen and the Action button - Siri: "Log left in Which Boob" or "Which side is next in Which Boob" - Touch and hold the app icon Apple Watch - Tap a side on your wrist when both hands are full - Complications show the last side and how long ago Share with your partner - Invite your partner through iCloud and you'll both see every feed, whichever phone logged it Pick a colour - The app icon comes in blue, pink, lavender, mint or sunshine No accounts, no ads and no tracking. Your feeds stay on your devices and in your own iCloud. Made for our own family's night feeds, and hopefully it helps yours too.

Screenshots

Hatch Grow4 screens
Which Boob?4 screens

Verdict

The call

Hatch Grow and Which Boob? both sit at 4.8 stars, but that hides the real split: 92% of Which Boob?'s written reviews are positive against 33% of Hatch Grow's. Which Boob? also leads on update cadence (fortnightly vs every 2 months). Hatch Grow's advantage is ratings volume (13K vs 49) and iOS requirement (15.0 vs 18.0). On price, rating, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Hatch Grow holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Hatch Grow has 13K ratings behind it against 49, so its average is the more settled of the two. Written reviews complicate that: 33% of Hatch Grow's written reviews are positive against 92% of Which Boob?'s, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Hatch Grow ships an update every 2 months, Which Boob? fortnightly. Both last shipped on November 11, 2026.

Scorecard4 real differences · 6 level
Hatch Grow versus Which Boob?: the parameters behind the verdict, then further details
ParameterHatch GrowWhich Boob?
PriceFreeFree
Rating4.8 (13K ratings) — better4.6 (49 ratings)
Positive reviews33.3% of reviews92.1% of reviews — better
Number of ratings13K — better49
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS15.0 — better18.0
Further details — not scored
Size112 MB30 MB
Age rating12+4+
DeveloperHatch Baby, Inc.Christopher Hardy

Customer experience

Hatch Grow

All ratings13,439 ratings
Positive94.8%
Neutral1.7%
Negative3.5%
Written reviews156 reviews
Positive33.3%
Neutral19.9%
Negative46.8%

Which Boob?

All ratings49 ratings
Positive93.9%
Neutral2.0%
Negative4.1%
Written reviews38 reviews
Positive92.1%
Neutral5.3%
Negative2.6%

User reviews

Hatch Grow

From 13K App Store ratings

What we love

  • 🚀 Helpful for tracking baby's activities
  • 👍 Useful features like weight tracking
  • 🤖 Alexa integration
  • 📊 Provides useful data and statistics

Room to improve

  • 🐛 Crashes and bugs
  • 🔒 Privacy concerns with clipboard access
  • 🌙 Lack of dark mode
  • 💤 Difficulty using at night

Which Boob?

From 49 App Store ratings

What we love

  • 👍 Extremely simple and easy to use
  • 👍 Perfect for tracking nursing side
  • 👍 No unnecessary features or bloat
  • 👍 Useful widget for quick access
  • 👍 Great for tired new moms

Room to improve

  • ⚠️ Limited history (last 5 feeds)
  • ⚠️ Cannot select the same boob twice in a row
  • ⚠️ Ads can be present
  • ⚠️ App icon is confusing
  • ⚠️ Font and aesthetic issues

Bugs and requests

Hatch Grow

Reported bugs

4 issues
  • Crashes when deleting or editing entries
  • Inconsistent data sync between devices
  • Disappearing or lost data
  • Issues with logging feeds/sleeps that span midnight

Requested features

5 requests
  • Add a dark mode option
  • Improve syncing between devices
  • Add ability to track baby's temperature, medications, and appointments
  • Provide better data export options (e.g. PDF reports)
  • Add Apple Watch app

Which Boob?

Reported bugs

2 issues
  • Last feeding or two sometimes disappears
  • Widget sometimes wouldn't connect with phone

Requested features

10 requests
  • Ability to hold more data than just 5 feeds
  • Ability to add a feed
  • Ability to edit the time started
  • Setting to change how many feedings can be viewed
  • Ability to see/find history until deleted
Show 5 more
  • Notes spot for each feeding
  • Ability to select the previously used boob (for block feeding)
  • Show last 24 hours of feedings
  • Ability to backlog a feed and edit time
  • Display time since last feed

In-app purchases

None

Hatch Grow

No in-app purchases

None

Which Boob?

No in-app purchases

Questions

Is Hatch Grow free?
Hatch Grow is free to download, with no in-app purchases.
Is Which Boob? free?
Which Boob? is free to download, with no in-app purchases.
Which has better reviews, Hatch Grow or Which Boob??
Hatch Grow is rated higher. Hatch Grow averages 4.8 out of 5 from 13K ratings, while Which Boob? averages 4.6 from 49 ratings.
Do Hatch Grow or Which Boob? have ads?
Neither Hatch Grow nor Which Boob? shows ads.
Which is updated more often, Hatch Grow or Which Boob??
Hatch Grow ships an update every 2 months, and Which Boob? fortnightly. Most recently, Hatch Grow was updated on November 11, 2026 and Which Boob? on November 11, 2026.

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