Facebook Pixel


Quick set up guide to your BabyDoppler. We are so excited to help you elevate your pregnancy experience!


• Sonoline B Heartbeat Monitor
• Sound Enhancing Gel, Doppler Probe and 2 x AA Batteries (comes with the Heartbeat Monitor )
• A comfortable place to lie flat
• Tissues or towel to wipe off the gel

Optional: Download the free Baby Doppler App to share your experience


  • Place the 2 x AA Batteries inside the Sonoline B - Baby Heartbeat Tracker.
  • Connect the doppler probe wire to the main device.
  • Lie down comfortably with your back down on a flat surface.
  • Expose your abdomen like you would during a regular ultrasound.
  • Using the Baby Doppler while you have a full bladder can make the heart-beat easier to hear.


  • Switch on the device from the power button located right on the center of the doppler.
  • Use the doppler probe to move around your lower belly until you find a strong sound of your babyʼs heartbeat.
  • Since the gel will reduce static, use a generous amount.


  • Starting from your pubic bone, gently glide the probe upwards towards your belly button. Slowly rock the probe, covering every part of your stomach so that you find the heartbeat.
  • If after a few minutes you cannot find your baby, shut the device off and try another time. You may need to wait for the baby to grow bigger or switch posi-tions.
  • You can read the heart rate at the display monitor with the heartbeat sound.
  • You can increase/ decrease the volume from the volume controller given on side of Heartbeat Tracker


  • After you've finished, clean off the probe to avoid any build-up.
  • You may choose to wipe it with 70% ethanol and then let it air dry or simply wipe it with a clean, dry cloth.
  • Do not submerge the device in water (except waterproof models) or apply cleaning chemicals.


• Download the BabyDoppler app in the Apple or Google Play store.
• Create an account.
• Customize your profile with details like your birthday and health information.
• Create a baby profile. Fill out details such as your babyʼs due date, gender and name.


  • Open the app.
  • Tap “Kick Counter” at the bottom of the screen.
  • Sit or lay down on your side and click start.
  • Let the kick counter run. Youʼll get a notification when 2 hours is up. During this time, choose a relaxing activity that allows you to pay attention to
  • kicks. Examples include watching TV, reading, calming hobbies, etc.
  • Press and hold the countdown notification to “Add 1 Kick” every time you feel a movement. Movements include kicks, rolls, swishes, flutter, jabs, pushes, etc. Hiccups do not count.
  • Continue adding kicks until you reach 10 kicks. At this time, youʼll see your recorded amount of time to reach that count.
  • If it takes you 2 hours to count movements, youʼll see that the session has completed with your recorded number of movements.
  • Take time to reflect on your recording each session. If youʼre 28 weeks or more, have you met the guideline of 10 kicks within 2 hours or less?


  • Open the BabyDoppler App.
  • Tap “New Recording” at the top of the screen.
  • Apply ultrasound gel to your lower belly. Turn the device on. Place the probe in the gel. Use a rocking motion to glide the probe toward your pubic bone and around until you detect a heartbeat.
  • Tap “Tap to Record” when you detect the heartbeat.
  • Listen and evaluate your sound recording. If itʼs good, tap “Submit.” If you want to try again, click “Re-Record” and follow the steps again for a clearer ver-sion.
  • Tap the “Record” icon at the bottom of the screen to view a list of your past re-cordings.


  • After youʼve recorded your babyʼs heartbeat, click “Share Progress with Family” at the top (you can share the heartbeat with your doctor/midwife or family/friends).
  • Save to your files or use the icons for other sharing and copying options.


  • Use the BabyDoppler app to make your recording and save it to your device.
  • Download and open a video editing app such as Magisto Video Editor and Maker.
  • Upload pictures of your babyʼs sonogram, pregnancy photoshoot and any other visuals.
  • Add text indicating your babyʼs due date. You can also add titles and write a message for friends, family and followers.
  • Upload your babyʼs heartbeat recording and add it to your video.
  • Save your video.
  • Upload video to Instagram, Facebook, TikTok, etc. You can also email it if youʼd prefer to keep it private.

Fetal Doppler Instructions FAQ

Congrats, you’ve given yourself the gift of hearing your baby’s heartbeat from home!

With a fetal doppler, you don’t need to wait until your next appointment—you can feel connected to your baby at your convenience.

Here’s everything you need to know about your BabyDoppler.

What is a Fetal Doppler?

Fetal dopplers, AKA fetal heartbeat monitors, are devices that allow you to listen to and monitor your baby’s heartbeat.

It works similar to an ultrasound machine at a doctor’s office or hospital. You lay down, rub ultrasound gel on your stomach, and use a probe to detect a beat.

The key is finding the right spot and honing in on the regular heartbeat noise form your baby. Once you do, you’ll be able to hear it through the device speakers. The fetal heart rate (FHR) will also be displayed on the screen.

Supplies: What Do I Need to Use My Fetal Doppler?

Here’s what you’ll need to get started.

  • Fetal Doppler. You can get your fetal doppler here.
  • Ultrasound Gel. You’ll need something that makes your probe glide across your belly and minimize any sound that may com from the friction caused by the probe against your skin. BabyDoppler devices come with a free 60ml tube of gel. We also recommend stocking up on a full bottle so you’ll have plenty when you need. If you’re in a pinch, here’s 8 Ultrasound Gel Alternatives. Keep in mind that ultrasound gel will always produce the best results for the clearest heartbeat.
  • Batteries. To use your device, you’ll need 2xAA batteries. The BabyDoppler brand comes with batteries included, which should last at least 10 hours.
  • Paper Towels. After you are finished using your doppler, you’ll want to wipe the gel off without having to stand up, creating a mess. Have some paper towels or tissue by your side.
  • Place to Lay Down. Fetal dopplers work best when you’re in a relaxed position. Recline or lay back, propping yourself up with a few pillows.
  • BabyDoppler App. If you want to record your baby’s heartbeat so you can hear it later, download the BabyDoppler app so you have it ready.

Step-by-Step: How Do I Use My Fetal Doppler?

Using a fetal doppler looks similar to having an ultrasound.

  1. Find a comfortable place to sit down or recline.
  2. Pull your shirt up, exposing your abdomen. Apply a generous glob of ultrasound gel to your lower belly.
  3. Place the fetal doppler probe in the ultrasound gel. Turn the device on.
  4. Use a rocking motion to gently glide the probe. Start at your lower pubic bone and rock upward. Try to cover each area to ensure you find your baby.
  5. Detect your baby's heartbeat and ensure it's the right noise. Don't get it confused with your heartbeat or other bodily noises. The two tell-tale signs that you've found a fetal heartbeat are that it's at least 120 beats per minute (BPM) and it sounds similar to galloping horses. For more tips on finding the right noise, read the next section.
  6. Can’t find the noise? Don’t panic or overuse the device. You might need to wait until your baby grows bigger or switches positions.
  7. Once you’ve detected the heartbeat, you can use the BabyDoppler app to record the sound. (Read: How To Use BabyDoppler App to Record Baby’s Heartbeat!).
  8. When you’re finished, wipe off the probe using paper towel. You can also wipe it using 70% ethanol and letting it air dry.

Is This the Right Noise? Finding the CORRECT Sound

The key to properly using a fetal doppler is discerning the correct noise. You don’t want to confuse it with your heartbeat or the sound of placenta. Here are a few tips:

  • BPM. The first sign you’ve found the right noise is that the screen displays 120-180 BPM. An adult heartbeat will usually be around 60-100 BPM.
  • “Galloping Horses”. The most commonly used comparison to describe a fetal heartbeat is the sound of galloping horses. In contrast, the sound of movement or your placenta is often described as "whooshing" or blowing trees.
  • Listen to Comparison Videos. To learn what it should sound like, watch others who’ve successfully detected a fetal heartbeat. Compare this to what you hear.
  • Audio Comparison App. For a handy go-to guide, we recommend using the audio references provided in the BabyDoppler app. Tap “Record,” then tap the “i” icon at the top of the screen. Select “View Audio Examples.” You can hear the sound in three different scenarios: clear, with mom’s blood flow, and with movement noise.

Tips: How Can I Easily Find My Baby’s Heartbeat?

Finding and discerning your baby’s heartbeat becomes easier over time. That’s because you’ll get better with practice and your baby will get bigger, making him or her easier to find.

There are a few things you can try to increase your chances of success:

  • Full Bladder. Many people find it easiest to detect a heartbeat when they have a full bladder. This helps push your uterus up from your pelvic cavity, making detection quicker and clearer.
  • Mornings. Some people also find it easiest to detect a heartbeat in the morning. One reason could be that it’s typically when you’re the least bloated. You might also have a full bladder from resting overnight.
  • Study the Sounds. Are you sure you aren’t detecting the heartbeat? We recommend that everyone first listens to a fetal heartbeat. That way, you’ll know what you’re looking for.
  • Clean. If you don’t clean the probe, gel build-up can create static, making it harder to hear.
  • Generous with Gel. Stocking up on ultrasound gel ensures you’re not stingy with it. Using less gel could mean more static. Using too much may also cause sound issues.
  • Take Breaks. If you can’t hear a heartbeat, try again later or the next day. You might not easily find a heartbeat each time and that’s okay. If the device is giving you anxiety, it’s a good idea to put it away until your baby grows and can be easily and predictably detected.

What If I’m Having Twins?

If you're having twins, you can expect to hear two different heartbeats as you shift the probe. However, hearing two "heartbeats" isn't always a sign of twins. You might just be picking up the same noise in two places.

I Can’t Find a Heartbeat. Now What?

First, ensure you’re at least 12 weeks pregnant. Although it’s possible to detect a heartbeat before this time, you shouldn’t expect it, so don’t let that worry you. Even if you’re at 12 weeks, you might just need to wait a little longer until your baby grows.

Another possibility is that you may need more practice using the device to find and discern the correct noise.

If you’ve detected a heartbeat before but can’t now, it may cause you to worry. However, consider this can happen for a few non-health-related reasons. Your baby may be in a position where it’s difficult for the doppler to pick up. Other factors can affect how easily detectable your baby is. For example, an empty bladder can make sounds harder to pick up. You might also be using too much gel. Air bubbles can increase the static of the device.

When Should I Call My Healthcare Provider?

As we mentioned above, there’s many reasons a fetal doppler might not work—many of which don’t involve the health of your baby. The main question to ask yourself is if the lack of detection is accompanied by a lack of movement. Are there any other signals something is wrong? For example, if you feel fewer than 10 kicks in 2 hours past 28 weeks, that’s more evidence for concern.

If you’ve waited or feel there’s something wrong for any reason, don’t hesitate and call your doctor or midwife.

If you detect a suspected abnormality in your baby’s heartbeat, you can record it using the BabyDoppler app and send it to your doctor for further examination. The doppler can also be used alongside a doctor during telehealth video appointments.

Remember that fetal dopplers can only be used by trained professionals to diagnose issues. They do not replace prenatal appointments or advice.

How Can I Clean My Fetal Doppler?

After every session, wipe off the ultrasound gel using a paper towel, tissue or dry cloth. It’s also a good idea to fully clean it. This helps prevent build-up, which could cause static. To do this, you can wipe it with 70% ethanol and let it air dry.

Don’t submerge the device or probe in water. Don’t use cleaning chemicals.

How Can I Share My Baby’s Heartbeat?

When you hear the magic, you’ll probably want to share it with the world. The BabyDoppler app allows you to record your baby’s heartbeat. You can save and email it, share it on social media, and more.

How Else Can I Monitor My Pregnancy?

To make the most out of your fetal doppler, download the BabyDoppler app. Along with giving you the option to record and track your baby’s heartbeat, there’s also a kick counter.

Counting your baby’s kicks is important starting at week 28. Keeping this habit helps you recognize if something is wrong. Seeing a list of your baby’s number of movements can help you track how your baby is growing.

Download BabyDoppler App Free

Don't want to read all these instructions?

We have made this video for you.

Are you going to make your own video of using our heartbeat monitor for the first time?

We would love to watch.

Share with us on our Facebook page