How old are you on the inside?

Swimmer woman showing vitals of actual and internal age

What is internal age

No two people age at the same pace. Lifestyle factors like diet, exercise, and stress management play a significant role in determining how quickly or slowly we age on the inside. Internal Age is a personal measure of aortic stiffness, which impacts spinal flexibility the ability of your internal organs' to function well.

The higher your internal age, the greater your risk for heart complications and cognitive decline. That’s why knowing how old you actually are on the inside is so important.

The good news is, no matter where you’re starting from, your internal age can be lowered with some simple lifestyle changes. That’s where the iheart Internal Age app comes in.

Screenshot of iHeart App, and what it looks on a smartphone

How it works

1. Measure your Aortic PWV

Paired with the iheart device, the Internal Age app measures Aortic Pulse Wave Velocity (Aortic PWV), a proven indicator of heart and brain health, and a scientifically-backed predictor of longevity. It can tell us how old you are on the inside by comparing your Aortic PWV with that of a healthy individual at all ages.  

2. Calculate your Internal Age

Once you receive your internal age score, you’ll have an accurate picture of how quickly you’re aging, giving you a helpful launchpad to begin making positive lifestyle choices. 

3. Track your progress 

Internal Age lets you visualize your score trends over time. By testing yourself regularly and developing healthy habits, you’ll be able to watch your internal age lower in as little as three weeks  – and start to feel better, too.

App Features

  • iHeart icon on iPad

    Powerful wellness indicator

    Internal Age gives you a big-picture glance into your overall health by measuring your Aortic Stiffness – a proven indicator of heart health, brain function, and longevity.

  • Simple testing

    Simple testing

    The iheart Internal Age app is easy to use and understand. Simply clip on the iheart device, connect to the app, and rest for a few moments while it reads your data.

  • iHeart quick results

    Quick results

    Find out how old you are on the inside in just a couple minutes.

  • iHeart tracking progress

    Track your progress

    Visualize trends in your data over time to see whether you’re headed in the right direction. 

  • Revolutionary ANS tracking 


    Add notes to each reading so you can look back on the context of your individual scores.

  • iHeart app can email results

    Easy sharing

    Email a PDF of your results in just a few taps.

  • ★★★★★

    “iHeart Internal Age has been a vital part of my life! I started using it to enhance my fitness and track stress. At first, I was horrified to see how old I was on the inside. After using it for a while I caught a severe case of pneumonia and the iHeart internal device basically lived on my finger to monitor my oxygen levels. I am now proud to say my internal age matches my physical/external age. ”

    - Nicole
  • ★★★★★

    “It encourages you to figure out a way to get healthier. I rarely go to my doctor unless something's really wrong, and if you're not getting feedback regularly, you don't usually change anything. I think for me having that reminder every day is really helpful.”

    - Henry
  • ★★★★★

    “I use my iheart device daily, the bio feedback it provides allows me to track how my choices impact my body. A cool tech device using science metrics that matter.”

    - M.L.
  • ★★★★★

    “What a great product to help me not only gauge my heart health, but to give me the tools to put me on the path of better habits in taking care of myself and my heart.”

    - Keith
  • ★★★★★

    “Using iheart encouraged me to stop neglecting my health. Each time you say, 'I'll work out next time,' you set a deadline and pass it. I needed to have started getting my act together yesterday!”

    - Gisele
Woman wearing blue jacket smiling using iHeart device

The world's firsts accessible measure of Pulse Wave Velocity (PWV)

Aortic Pulse Wave Velocity (PWV) tests traditionally cost upwards of $25,000 to perform and require a team of specialists to operate. 

For most physicians, that kind of tech is out of reach. And for the public, too. 

Until now. 

By offering a real-time measure of your Aortic PWV in just a couple of minutes, iheart Internal Age gives you direct biofeedback about your internal health, so you’re motivated to stay on track and make decisions that lead to a younger, healthier, more resilient self.

iheart Internal Age is free to download and easy to use.

Don’t wait until it’s too late to make healthy changes. Start optimizing your health by tracking your iheart Internal Age now, and get instant feedback as you improve.

iHeart Internal Age app icon
Download the app