Ionic: Heart rate and calories burned accuracy concern

[E.Z]

I've been using my Ionic for over a year and I notice one thing extremely negatively. Measuring the calories consumed. Regardless of which shortcut I choose (workout, interval, weights), the measured pulse and calories are well above the real value. Sometimes I start with three calories in the first second. If I don't do anything and activate a shortcut, will the displayed heart rate go up automatically?
The only credible thing when it comes to tracking are the values when walking or running.
There are products that cost significantly less and can do the whole thing better.
I would be interested in whether this can be fixed with an update or is something wrong with the sensors?

Moderator Edit: Clarified subject

[RicardoFitbit]

Hi @E.Z, welcome to the Community Forums.

Thanks for bringing this to our attention and for the details that were shared, I understand how frustrating this matter can be for you. Heart-rate tracking can be affected by several factors including air temperature and device location on your arm. For more information about this, please check our help articles:

• How do I track heart rate with my Fitbit device?
• What factors can affect my heart-rate reading on my Fitbit device?

However, if your heart-rate tracker seems inaccurate after taking the recommendations into account, please reply with answers to the following questions so I can further investigate:

1. What were you doing when you noticed the problem? If you were exercising, specifically what types of exercise?
2. Were you wearing the Fitbit device particularly tight or loose?
3. What was the position of the Fitbit device on your wrist? 

I'll be waiting for your reply if further assistance is needed.

[E.Z]

I did weight training with my dumbbells at home. However, it made no difference to bodyweight exercises either.
The Ionic is always above the hand joint and has no leeway.
If I measure training without the shortcuts, a significantly lower heart rate and calorie consumption is shown.
I asked around in the community, which mostly have similar values (+ -600 calories / hour).
I would also be interested in whether the individual devices all use the same sensors (Ionic, Versa, ...)?

[StanleyKrygier]

I have been a Fitbit customer for over 5 years now. I have been noticing accuracy readings in my Fitbit Surge, Charge, and currently in my Ionic. Contrary to the guy that wrote to you, my readings are extremely low. I do high intensity workouts like P90X. The heart rate monitor is showing me a heart rate reading of 87 to 115, when I know **ahem** well I'm well over a 150. I wear my weight lifting gloves with wrist wraps, so I wear it 3in above my wrist as recommended. It is also strapped on tight. When the watch finally does catch up with the heart rate, my heart rate has already dropped by about 15 beat per second. Needless to say, this is affecting my calorie burn, as well as safety issues of my heart rate getting too high. I'm getting so frustrated that I'm getting ready to strap this thing to my carotid artery. Would you guys be able to speak with the manufacturers to maybe either put an additional sensor on the underside of the strap with wires for a more accurate heart rate, or do an additional chest strap? 

[E.Z]

I did the same exercises without shortcuts and my pulse was barely over 90. So 30-50 beats per minute less than with shortcuts. Accordingly, I didn't even use half the calories.
Many in the comunity say that 600 calories per hour would be normal for weight training. My teacher in fitness training says something different. Various sports scientists also see the measurements rather critically.

[Brownybluenose]

The tracker is useless for heart rate monitoring. I've had this for ages now and all they do is try to make out your wearing it wrong or it needs calibrating blah blah. I did a side by side comparison with my wife's Apple watch and the results were frightening. I hate Apple as well but they were miles apart. I can't even do a 5k run without my ionic dropping out all over the place. Useless and over £200!