Common Questions

We’ve compiled answers to the most frequently asked questions.

For Bevel to generate your Recovery and Sleep Score, it needs complete sleep data that includes both Heart Rate Variability (HRV) and Resting Heart Rate (RHR).

If either of these is missing, your scores may not appear.

To fix this:

• Make sure you’re wearing your device consistently while sleeping

• Open Apple Health to prompt a data sync

• Give the app a few moments to process the data

These three metrics are closely connected and designed to reflect how your body is performing and recovering over time:

• Strain represents how much effort you put into your day

• Sleep helps your body recover from that effort

• Recovery reflects how ready your body is for the next day

In simple terms:
Higher Strain increases your need for Sleep → Sleep improves Recovery → Recovery determines how much Strain you can handle next.

These labels compare your current data to your personal 60-day baseline.

• Normal: Within your typical range

• Above normal: Higher than your usual range

• Below normal: Lower than your usual range

It’s important to note that “above” or “below” isn’t always good or bad—it depends on the metric:

• Higher HRV → generally better

• Higher RHR → generally worse

Bevel uses color to help you interpret this:

• Blue: Better than your baseline

• Orange: Worse than your baseline

Bevel uses your data to build a personalized baseline, which takes time.

During the first 2–6 weeks, the app is learning:

• Your typical heart rate patterns

• Your sleep behavior

• How your body responds to strain

This calibration period ensures that your insights become accurate, personalized, and meaningful over time.

Each health and fitness app uses its own algorithms and assumptions.

Bevel’s metrics are based on:

• Current scientific research

• Real-world user data

• Continuous refinement of its models

Because of this, it’s normal for Bevel’s scores to differ from other platforms.

Bevel defines your “day” based on your Wake Up Time setting.

If you haven’t slept yet:

• The app may still show the previous day

• It will switch to the new day closer to your scheduled wake time

Most of Bevel’s core features work without an internet connection.

However, some features do require internet, such as:

• Food logging and barcode scanning

• Bevel Intelligence and recommendations

Location data helps provide more relevant and personalized recommendations.

For example:

• Suggesting indoor workouts during bad weather

• Adjusting recommendations if you’re traveling

For most adults, a typical respiratory rate (RR) during sleep ranges from 12 to 20 breaths per minute and usually stays fairly consistent from day to day. This range suggests your respiratory system is functioning well and your body is getting enough oxygen without added strain.

Children and athletes may have slightly lower rates (around 12–16 breaths per minute) due to higher cardiovascular efficiency. Older adults may have slightly higher rates, often closer to 20 breaths per minute.

These ranges are general guidelines, what matters most is your personal baseline. Tracking your RR over time helps you understand what’s normal for you and spot any meaningful changes.

There are a few reasons for why you may see differences in HRV between Bevel and other apps:

1. Bevel calculates HRV using the RMSSD formula by default, which is considered better for short-term recovery analysis. Apple Health and several other popular apps use SDNN. If you prefer to use the SDNN formula, go to Settings/Profile → Customization → Calculations → HRV Method: Apple Health (SDNN).

2. If the app to which you're comparing your Bevel HRV also uses the RMSSD formula, the difference in data may be stemming from inaccuracies in the other device's heart rate sensor itself. Bevel was built with the Apple Watch in mind because the Apple Watch consistently ranks high above other fitness trackers in accuracy.

3. Finally, every tracker records HRV slightly differently. At Bevel, we apply a data cleaning function to filter out high readings from your Apple Watch, which are usually noisy hardware artifacts. 

That said, what's most important when tracking HRV is that the formula behind your measurements is reliable. Once you're comfortable with the method your tracker uses, you should track the same number over time instead of comparing them to different trackers.

Currently, HRV is calculated by averaging values during the deepest parts of your sleep. Therefore, you do not need to perform a Breath session in the morning for Bevel to calculate your HRV.

For the most accurate HRV values, it is recommended to turn on AFib History. However, please note that turning on AFib History could potentially disable high heart rate alerts on your Apple Watch, so proceed with caution.

If you want to use HRV during mindfulness sessions, you can turn it on by going to Bevel settings → Calculations → Enable Mindfulness Session.

This method is not necessarily more accurate for everyone. If you can consistently practice mindfulness, it might provide better data. However, if your mindfulness sessions vary, It is better to stick with the default setting for more reliable readings.

While not required, it is recommended that you turn on AFib History on your Apple Watch so it can record more heart rate samples during sleep. However, please note that turning on AFib History could potentially disable high heart rate alerts on your Apple Watch, so proceed with caution.

Yes. Bevel Pro supports Apple Family Sharing, allowing you to share your subscription across your family plan.

Why We Can’t Make Changes for You

Subscription management for Bevel purchased through the App Store is handled entirely by Apple. This means we cannot cancel, modify, or refund App Store subscriptions on our end.

What You Can Do

Option 1: Contact Apple Support

For any subscription issues that require assistance directly from Apple, you can reach them here:

Apple Support: https://support.apple.com/en-us/118223

Apple can help you with billing questions, refunds, or subscription errors.

Option 2: Manage Your Subscription on Your iPhone

You can also update or cancel your Bevel subscription directly from your device:

1. Open Settings on your iPhone

2. Tap your Apple ID / Profile

3. Select Subscriptions

4. Choose your Bevel subscription

5. Adjust or cancel as needed