Comparison

Willow® vs KidStrong Member App

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

Head to head
About

Willow®

Manage your Willow breast pump, track milk output, and access expert advice for pumping and postpartum care. Features include personalized pump control, session history, and AI-powered support.

Highlights
  • Control Willow pumps remotely
  • Track milk output and session history
  • Manage digital milk stash (SmartStash)
  • Access expert articles and videos
  • AI-powered women's health chat
  • Book expert consultations
Features
Read full description

More than a pump app. A support system. Control your pumps with a tap from your phone or your wrist, track your session history, and view your pumping trends and metrics. Scan and manage Willow SmartStash Bags in your fridge and freezer. Plus, get access to expert guidance from educational content, live services, and our specialized, AI-powered chat—a virtual support system designed to support you across pumping, feeding, and postpartum care. Who can use the Willow app? This app is compatible with all connected pumps, including Willow Go, Sync, 360, and 3.0. Willow Wave users can manually add manual pump sessions to their session history. And anyone wanting to manage their milk stash can keep track in our SmartStash inventory tracker. All of the pumping, feeding, maternal healthcare, parenting and baby development resources in the app are free for anyone to use! Operate your pumps with a tap. Start and stop your session, switch between modes (Go and Sync), adjust suction levels, and view your pumping duration, all from your phone or smart watch. Set up your own Pumping Preferences, including suction levels and custom timer settings, and set reminders so every session works just the way you like. Get the only app that lets you control your session from your Apple Watch. NEW! You can now control your Go pumps, in addition to Willow 360 and 3.0. Track your sessions. Understand your output. Follow your milk output, session durations, add manual pump sessions and more for a complete picture of your pumping history. Spot trends, optimize your routine, and pump with confidence. With SmartStash, you can quickly and easily scan Willow Milk Bags into your digital stash to manage your inventory in the app. Get your questions answered. Access a comprehensive library of expert-backed articles and videos on all things pumping, feeding, and postpartum care, from establishing supply and building schedules to combo-feeding and more. The Willow app also includes our conversational AI, specially dedicated to women’s health, designed by moms for moms. With both expert resources and AI-powered support, you always have trusted guidance at your fingertips. Book expert sessions for personalized guidance. Connect with lactation consultants, pelvic floor therapists, mental health professionals, Willow sizing experts, and more. Because we know it takes a village. Visit onewillow.com to learn more about the app and explore accessories, content, and more.

About

KidStrong Member App

Easily book fitness classes and manage your membership on the go. Reserve spots, join waitlists, purchase class packages, and track your progress directly from your device.

Highlights
  • Book classes
  • Manage membership
  • Purchase class packages
  • Waitlist functionality
  • View profile and status
  • Stay updated on services
Features
Read full description

Download the KidStrong Member App to easily book classes and manage your fitness experience - anytime, anywhere. Make a reservation, get added to a wait list, purchase class packages, check your profile and membership status, keep up to date with the latest products and services, and more – all from your device. Visit www.kidstrong.com to learn more.

Screenshots

Willow®4 screens
KidStrong Member App4 screens

Verdict

The call

The clearest difference is rating: Willow® at 4.5 against KidStrong Member App's 2.0. Willow® also leads on update cadence (monthly vs every 10 months) and ratings volume (2.8K vs 162). KidStrong Member App's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, review sentiment, in-app purchases and device support 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

Willow® holds the better App Store score, 4.5 against 2.0. That said, the two scores are not equally well evidenced: Willow® has 2.8K ratings behind it against 162, so its average is the more settled of the two. Written reviews complicate that: 13% of Willow®'s written reviews are positive against 16% of KidStrong Member App's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Willow® ships an update monthly, KidStrong Member App every 10 months. Both last shipped on October 24, 2026.

Scorecard5 real differences · 5 level
Willow® versus KidStrong Member App: the parameters behind the verdict, then further details
ParameterWillow®KidStrong Member App
PriceFreeFree
Rating4.5 (2.8K ratings) — better2.0 (162 ratings)
Positive reviews13.5% of reviews16.5% of reviews — better
Number of ratings2.8K — better162
Update frequencyMonthly — betterEvery 10 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPod, Apple Watch — betteriPhone, iPod
Requires iOS15.615.6
Further details — not scored
Size103 MB33 MB
Age rating12+4+
DeveloperWillow Innovations, Inc.KidStrong INC

Customer experience

Willow®

All ratings2,756 ratings
Positive85.8%
Neutral4.7%
Negative9.4%
Written reviews289 reviews
Positive13.5%
Neutral15.6%
Negative70.9%

KidStrong Member App

All ratings155 ratings
Positive22.6%
Neutral0.6%
Negative76.8%
Written reviews91 reviews
Positive16.5%
Neutral0.0%
Negative83.5%

User reviews

Willow®

From 2.8K App Store ratings

What we love

  • 🚀 Easy to use
  • 💡 Convenient for on-the-go pumping
  • 👍 Comfortable and effective pumps

Room to improve

  • 🐛 Buggy app with connectivity issues
  • 🔋 Poor battery life
  • 👎 Lacking key features like pump history and volume tracking

KidStrong Member App

From 162 App Store ratings

What we love

  • 🚀 Easy class booking and rescheduling
  • 🎯 Convenient makeup class management
  • 📱 Unified app for scheduling and memberships
  • 🏕️ Direct camp and party signup functionality
  • ⏰ Quick class cancellation and rebooking

Room to improve

  • 🐛 Frequent login failures and authentication issues
  • 📉 Lost critical features from previous app
  • 📸 No photo gallery or class pictures
  • 📊 Missing progress tracking and rank visibility
  • 🏆 No trophy case or milestone tracking

Bugs and requests

Willow®

Reported bugs

3 issues
  • App frequently disconnects from pumps
  • Timer and session data not always accurate
  • Pumps sometimes stop working mid-session

Requested features

3 requests
  • Add ability to log pumping volume and history
  • Allow customization of pump timer
  • Improve app responsiveness and reliability

KidStrong Member App

Reported bugs

14 issues
  • Login screen freezes after password autofill
  • Cannot progress past location selection screen
  • App logs out users and won't allow re-login
  • Membership not recognized in app
  • Class attendance data reset or shows inaccurate counts
Show 9 more
  • Password reset emails not sending
  • App requires full delete and reinstall to function
  • Notifications only work intermittently
  • Profile switching requires app reinstall
  • Waiver download fails to load
  • App crashes and freezes frequently
  • Credits not saved when classes are canceled
  • Data from previous app not migrating correctly
  • Wrong student data displayed in accounts

Requested features

12 requests
  • Restore progress tracking toward next rank/level
  • Reintegrate class photos and photo gallery
  • Add trophy case and awards display
  • Show class attendance counter and history
  • Display ranking chart with class requirements
Show 7 more
  • Enable quick check-in from parking lot
  • Add profile picture upload functionality
  • Show number of classes until next rank up
  • Restore visual progress indicators for motivation
  • Integrate both old and new app features
  • Improve data migration from previous app
  • Add app support and contact options

In-app purchases

None

Willow®

No in-app purchases

None

KidStrong Member App

No in-app purchases

Questions

Is Willow® free?
Willow® is free to download, with no in-app purchases.
Is KidStrong Member App free?
KidStrong Member App is free to download, with no in-app purchases.
Which has better reviews, Willow® or KidStrong Member App?
Willow® is rated higher. Willow® averages 4.5 out of 5 from 2.8K ratings, while KidStrong Member App averages 2.0 from 162 ratings.
Do Willow® or KidStrong Member App have ads?
Willow® shows ads; KidStrong Member App does not.
Which is updated more often, Willow® or KidStrong Member App?
Willow® ships an update monthly, and KidStrong Member App every 10 months. Most recently, Willow® was updated on October 24, 2026 and KidStrong Member App on October 24, 2026.

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