Terms of use

Last updated 8 September 2026 · HeartGlance, by CircleRoll LLC

These terms are an agreement between you and CircleRoll LLC ("we", "us") covering the HeartGlance apps for iPhone, Android, Apple Watch and Wear OS, and this website. By using HeartGlance you accept them. If you do not, please do not use it.

1. What HeartGlance is, and is not

HeartGlance is a general wellness product. It estimates your pulse from the colour changes your phone camera can see in your fingertip, records numbers you enter, and shows them back to you over time.

HeartGlance is not a medical device. It is not cleared, approved or registered by the FDA, the MHRA, the EMA or any comparable authority. It does not diagnose, treat, cure, mitigate or prevent any disease or condition, and it does not detect heart rhythm disorders, including atrial fibrillation. Its readings are estimates and can be wrong.

Nothing HeartGlance shows you is medical advice. Do not use it to decide whether to seek care, whether to take a medication, or whether to change a dose. Those are conversations to have with a qualified clinician who knows your history.

If you think you are having a medical emergency, call your local emergency number immediately. Do not open this app instead.

2. Who may use it

You must be 18 or older. The reference data HeartGlance compares against begins in adulthood, and comparisons drawn from it would be meaningless for a child.

3. Your data

Your readings stay on your device. We do not host, receive or process them. What that means in detail is set out in the privacy policy, which forms part of these terms.

Because your data is on your device and not with us, keeping it is your responsibility. Deleting the app, resetting the device, or losing it, removes your history — we hold no copy and cannot restore one. If you want your readings to survive a new phone, turn on Apple Health or Health Connect sync before you move.

4. Subscriptions and payment

• Measuring your heart rate is free, without an account and without a time limit, and stays that way. Premium adds longer trends, extra chart types, comparison with published population data, health-store sync, extra reminders, and sharing the doctor's report.
• Paid plans are sold through the Apple App Store and Google Play. Those stores take the payment, hold the subscription, and apply their own terms and refund policies. We never see or handle your payment details.
• Subscriptions renew automatically at the price shown until you cancel. Cancelling stops the next renewal; access continues to the end of the period already paid for.
• A free trial converts to a paid subscription at the end of its term unless cancelled first. The app reminds you the day before that happens.
• The Lifetime purchase is a one-time payment for the current app on the store account that bought it. It is not a promise that the app will exist forever, and it does not cover entirely separate future products.
• Cancel through the store: on iPhone, Settings → your name → Subscriptions; on Android, Play Store → Payments and subscriptions. Refunds are requested from the store, not from us.

5. What you agree not to do

• Use HeartGlance as a substitute for professional medical care, or hold it out to anyone else as one.
• Reverse engineer, decompile or attempt to extract the source, except where the law says you may.
• Resell, sublicense, or redistribute the app or its outputs as a product of your own.
• Use it in a way that breaks the law, or that interferes with anyone else's use of it.

6. Our stuff stays ours

The app, this site, the HeartGlance name and its design are owned by CircleRoll LLC and protected by copyright and trade mark law. You get a personal, non-exclusive, non-transferable licence to use the app on devices you control, for as long as these terms are in force.

Your readings and notes are yours. We claim no ownership of them and have no way to reach them.

7. No warranty

HeartGlance is provided "as is" and "as available". To the fullest extent the law allows, we disclaim all warranties, express or implied, including fitness for a particular purpose and any warranty that measurements will be accurate, complete or uninterrupted.

Some jurisdictions do not allow parts of this to be excluded. Where that is the case, this section applies only as far as it lawfully can, and your statutory rights as a consumer are unaffected.

8. Limit of liability

To the fullest extent the law allows, CircleRoll LLC is not liable for indirect, incidental, special or consequential loss arising out of your use of HeartGlance, including loss of data or any decision taken on the basis of a reading. Our total liability for any claim relating to HeartGlance is limited to what you paid us for it in the twelve months before the claim.

Nothing here limits liability that cannot lawfully be limited, including for death or personal injury caused by negligence, or for fraud.

9. Changes and ending

We may update the app and these terms. If a change materially affects your rights, the app will tell you before it takes effect. Continuing to use HeartGlance afterwards means you accept the updated terms. You can end this agreement at any time by deleting the app.

10. Law

These terms are governed by the laws of the State of Delaware, United States, without regard to its conflict of law rules. If you are a consumer resident elsewhere, you keep the protection of any mandatory consumer law of the country you live in, and may bring proceedings in your local courts.

11. Contact

CircleRoll LLC · help@circleroll.com