The Technology

How Bundl Works: From Ankle to Insight

Gentle sensors. Bluetooth Low Energy. An app built for tired parents. Here's how it all comes together, and why there are no alarms.

The Process

Simple for Parents. Sophisticated Inside.

Four steps from setup to understanding, and Bundl handles everything in between.

Step 01

Wear

  • Slips gently onto your baby's ankle
  • Fits newborns through 24 months
  • Tamper-resistant safety lock
  • Soft velcro adjustment
Step 02

Learn

  • Readings travel to the app over Bluetooth
  • Heart rate, skin temperature & movement
  • A band-fit check keeps readings accurate
  • Learns what's normal for your baby
Step 03

Understand

  • Plain-language insights in five areas
  • Sleep, feeding, comfort, health & growth
  • Compared with your baby's usual and their age
  • Gentle check-ins for you after hard days
Step 04

Share Insights

  • Pediatrician-ready report in one tap
  • Visit prep: what to expect at the next checkup
  • Your baby's patterns and your questions
  • You choose what to share
Sleep, Made Simple

Understanding Your Baby's Sleep

Bundl combines movement and heart rate to see when your baby is asleep or awake, then shows it simply: the three numbers most parents actually want, next to what's typical for their age.

Total Sleep

Night sleep and naps added up over the last 24 hours, next to the typical range for your baby's age.

Night Wakings

How often your baby woke between 7pm and 7am. Waking at night is expected, especially in the early months.

Longest Stretch

The longest block of unbroken sleep, often the number that matters most to a tired parent.

Ivy slept about 13.5 hours.

Typical for 4 to 12 months: 12 to 16 hours a day, including naps.

Last 24 hours
Asleep
Awake
13.5h
Total Sleep
2
Night Wakings
5h
Longest Stretch

Sample from the Bundl app demo.

Looking After You

Check-ins Built Around Real Moments

Bundl never asks a bare "How are you feeling?" It notices what actually happened and asks about that.

01

Notices

  • A broken night
  • A fussy stretch
  • A sick day
  • Or just an ordinary week
02

Asks One Question

  • About what really happened
  • Tap an answer or type your own
  • Never a mood score
  • Skip any time
03

Responds with Care

  • Understanding, not "don't worry"
  • Why it's common
  • One realistic thing to try
  • From AAP, NIMH & PSI guidance
04

Support Is There

  • Parent support groups
  • Hotlines to call or text any time
  • Private to you
  • Remembers and follows up gently
📱
☁️
🩺

Your data travels securely

Encrypted at every step, and only shared when you choose.

Encrypted Parent-Controlled
Data Sharing

Sharing Data With Your Care Team

With one tap, share a visit-ready report with your pediatrician: your baby's patterns in plain words, what usually happens at the next checkup, and the questions you want to ask.

  • Encrypted in transit and at rest, never sold
  • Visit-ready reports: patterns in plain words, plus your questions
  • Historical data export: daily, weekly, or monthly
  • You choose what to share, and with whom
  • Shaped by feedback from a practicing pediatrician
  • Multi-child profiles: manage every little one in one place
Questions

Frequently Asked Questions

Bundl uses Bluetooth Low Energy to connect to your phone. The band syncs to the app over Bluetooth, within typical 30+ foot range. Cloud syncing for data storage and data sharing requires an internet connection.
Bundl learns a personal baseline for your baby from their own readings, starting from what's typical for their age and adjusting as it gets to know them. Insights and check-ins are built from trusted guidance (the AAP, CDC, NIMH, and Postpartum Support International), so every message can be traced back to a reliable source.
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. Bundl focuses on understanding your baby's patterns and supporting you, not on alarms.
Yes. The Bundl app supports multiple child profiles. Each Bundl device pairs to an individual child's profile, and you can switch between dashboards with a single tap from the app home screen.
No. Bundl is designed for understanding, not alarms. Insights and check-ins wait for you in the app, and at most a gentle notification lets you know a check-in is ready. If you're ever worried about your baby, trust your instincts: call your pediatrician, or 911 in an emergency.
Absolutely. All data is encrypted before transmission and stored securely in the cloud. We never sell, share, or use personal health data for advertising, and your own check-ins are private to you.

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

Email Our Team
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