Bundl band in Sage Green

Sage Green · Original

Pre-Seed Waitlist Open

Bundl Smart Monitor

Baby Wellness Ankle Band and App · Newborn to 24 Months

Planned Starting Price

$199.99

Includes the charging dock and the free iOS & Android app. Final pricing subject to change at launch.

Colors & Designs
Sky Blue
Blush Pink
Sage Green
Floral
Dinosaur

One universal, adjustable strap designed to fit babies from newborn through 2 years old.

Join the Waitlist Try the App Demo Support Us on GoFundMe

What the Band Senses

  • Heart Rate: read gently with light, like a smartwatch, and compared to your baby's own usual
  • Skin Temperature: a comfort trend at the ankle (not a substitute for a thermometer)
  • Movement: turned into asleep, awake, and active time
  • Sleep: total sleep, night wakings, and the longest stretch, next to what's typical for their age
  • Band Fit: a soft skin-contact sensor confirms the band is on properly, so readings stay accurate
  • Nursery Comfort: the charging dock reads room temperature and humidity

In the Free App

  • Insights in Plain Words: sleep, feeding, comfort, health, and growth, each explained in a sentence
  • Look Back Any Day: past days' patterns and insights, one tap away
  • Daily, Weekly & Monthly Reports: from today's summary to the month overall
  • Pediatrician Visit Prep: what usually happens at the next checkup, vaccines due, and your baby's own patterns and questions
  • Parent Check-ins: gentle, private conversations after hard nights and on ordinary days
  • Private & Encrypted: your data is never sold, and your check-ins are private to you
Battery Life24 to 36 hours of wear / up to 72 hours standby (design target)
Battery TypeLithium-polymer (Li-Po), sealed and non-removable
ChargingWireless charging dock, no exposed metal contacts
ConnectivityBluetooth Low Energy (BLE) 5.0, works without Wi-Fi
Water ResistanceSealed sensor pod, IPX7 (design target); strap is machine washable
Band Width36mm (~1.4 inches), wide and soft for even pressure
Fit RangeOne adjustable strap, about 3.5 to 6 inches (9 to 15.2 cm) ankle circumference
Sensor Pod34mm round, detachable so the strap can be washed
WeightAbout 20 g in total (target, to be confirmed on first units)
FasteningMedical-grade micro hook-and-loop with tuck-through safety channel
Charging DockWireless charger with a room temperature and humidity sensor

What's Planned to Be Included

  • 1× Bundl Sensor Module
    The sealed pod with heart-rate, temperature, movement, and band-fit sensors
  • 1× Adjustable Ankle Band
    Your chosen color & design, one universal size
  • 1× Spare Replacement Band
    An extra strap for wash days
  • 1× Charging Dock with Nursery Sensor
    Wireless charging, plus room temperature and humidity readings
  • Quick Start Guide
    Step-by-step setup, app download, and pairing instructions
  • Premium Foam-Lined Box
    Minimalist Bundl branded packaging
Bundl is designed for babies from newborn (birth) through 24 months. One universal, adjustable strap fits ankles from about 9cm (newborn) to 15.2cm (24 months), so it grows with your baby.
No. Bundl is a general wellness product, not a medical device. It shows your baby's patterns and gentle, plain-language insights. It does not send medical alerts or alarms, does not monitor blood oxygen, and does not diagnose anything. Always consult your pediatrician with any concerns, and call 911 in an emergency.
No, and that's by design. Alarm-based monitors can keep parents on edge, and many alerts come from movement or a loose fit rather than a real problem. Bundl looks at patterns over hours and days and explains them calmly in the app. If you're ever worried about your baby, trust your instincts: call your pediatrician, or 911 in an emergency.
Oxygen monitoring with alerts for infants is regulated as a medical device, and the American Academy of Pediatrics does not recommend home monitors as a way to reduce the risk of SIDS. We chose to focus on what helps parents day to day: understanding their baby's patterns and looking after themselves.
We are currently in the prototype stage and working toward a Kickstarter campaign launch. Join our waitlist to be the first to know when Bundl is available and to receive exclusive early-supporter opportunities.
The built-in lithium-polymer battery is planned to last 24 to 36 hours of wear, with up to 72 hours in standby. The app shows the battery level and lets you know when it's time to pop the band on the dock.
Absolutely. Bundl's inner layer is made from GOTS-certified organic cotton, free from harmful chemicals and pesticides. The triple-layer comfort system (TENCEL + Bamboo + Organic Cotton) is specifically engineered for newborn skin sensitivity.
Yes. The Bundl app is planned to include a secure data-sharing feature that lets you export and share your baby's complete health history, including sleep, feeding, and comfort patterns, heart rate and temperature trends, and the questions you want to ask, directly with your healthcare provider.

Still have questions? We'd love to hear from you.

Email Our Team
✦ A Calmer Approach
How Bundl Thinks

Patterns, Not Alarms

Understanding, not worry.

Because one reading at 3am shouldn't decide how your night goes.

Alarm-based monitors react to single readings, which can be thrown off by a wriggle or a loose fit. Bundl takes a different path: it learns what's normal for your baby over hours and days, then explains what it sees in plain words, calmly, in the app.

How Bundl Works It Out

Band Fit Checked

Readings only count when the band is on properly

Your Baby's Normal, Learned

A personal baseline, starting from what's typical for their age

Patterns Over Days

Sleep, feeding, and comfort compared with their usual, not a single moment

Plain Words, Calmly

What it means, what's typical, and one thing to try, plus a check-in for you

How Bundl Compares

Alarm-Based Monitors
Bundl
✗React to single readings, day and night
✗Can be set off by movement or a loose fit
✗Numbers without context
✗Nothing for the parent
✓Looks at patterns over hours and days
✓Checks band fit before trusting a reading
✓Plain words, next to what's typical for their age
✓Gentle check-ins for you, too

"Designed to help parents understand their baby, not to keep them on edge."

Design

Tamper Safe Design

Every closure is engineered to stay secure on your baby's ankle, snug enough for accurate readings, gentle enough to never restrict.

Bundl prototype band

Dimensions

Length 9 inches
Width 1.4 inches (36mm)
Sensor Pod 34mm, detachable

Closure System

Medical Grade Velcro Hypoallergenic hook-and-loop closure, designed to prevent tampering, rated for repeated daily use
Tuck Through Safety Strap Free end feeds through a locking slot, eliminating loose flaps and making the fit tamper-resistant
Materials

Triple-Layer Comfort System

Every layer is chosen for your baby's delicate skin. Safe. Breathable. Certified.

Exploded view of Bundl band's three-layer construction
1

TENCEL™ Lyocell: Outer Layer

Botanical fibre from eucalyptus. 50% more breathable than cotton, naturally temperature-regulating, zero skin irritants.

2

Bamboo Cotton: Middle Layer

Moisture-wicking and naturally antibacterial. Pulls sweat away from skin and stays odour-free through full-day wear.

3

Organic Cotton: Inner Layer

GOTS certified, grown without pesticides. The softest layer sits directly against your baby's ankle skin.

Personalized Insights

Your Baby's Patterns, Turned Into Guidance.

Babies come with a future full of possibilities, adorable noises, and unforgettable moments.   But the one thing they don't come with… is an instruction manual.

Bundl turns everyday patterns into plain-language insights for your child. Instead of numbers and alarms, you get what happened, what it means, what's typical at this age, and one gentle thing to try. And because parents matter too, Bundl checks in on you.

Sleep Pattern Insights

How much your baby slept, how often they woke, and the longest stretch, next to what's typical for their age.

Comfort Patterns

See when your baby tends to be settled or unsettled, with context on what's common at their age.

Parent Check-ins

After a hard night or a fussy stretch, Bundl asks how you're doing, with kind, practical responses and support that's always there.

Daily Wellness Summaries

A simple daily overview of your baby's health trends so you always know how their day looked at a glance.

Weekly & Monthly Patterns

Weekly and monthly patterns compared with your baby's own usual, so you can see how they grow and change.

Pediatrician-Ready Reports

What usually happens at the next checkup, vaccines due, and your baby's patterns and questions to bring along.

Every baby is different. That's why Bundl's insights adapt to your baby's unique patterns, helping parents better understand routines, comfort levels, sleep quality, and overall wellness over time.

Support for parents. Comfort for babies. Confidence for every moment.
Be Part of Something Meaningful

Join Us: Two Ways to Help Bundl Happen.

Whether you sign up for updates or help fund our mission, every action moves us closer to helping families feel more at ease.

Join the Waitlist

Be first to know when Bundl launches: Kickstarter alerts, launch updates, and early access opportunities.

Early access to launch
Kickstarter alerts
Fundraiser announcements
Exclusive supporter perks

Have another way you'd like to support Bundl, or just curious about what we're building?

Whether you're a healthcare provider, researcher, potential partner, or simply someone who believes in our mission — we'd love to hear from you. Contact our team →