Today I did Pedal Power mix 3 stopping after the tabata segment, 23 minutes, 198 calories. I got a good workout out of this and stayed in Zone 5 for 13.25 minutes of it at the highest level and zone 3 at 7.14 minutes. This was from the Polar app. I liked being able to see the graph at my peaks an lows on my tablet as I worked

Both Polar and Map My Fitness had my HR the same throughout. MMF had me at 189 calories. MMF put it in My Fitness Pal as bicycling vigorous, 14-15 mph. MMF had it at 15.1 mph. I then did Body Beast Build legs, 42 minutes, Polar 256 calories, MMF 260. Very close. MMF does not give HR for a workout that is considered a general workout when entering weight work with weights. MMF does not work at all for yoga and stretching, this is the second time I entered yoga and it did it as yoga general workout. I did STS extended stretch and it had over 100 calories again. Polar was 32 calories, 15 minutes. That is my general figure for that workout. I am liking the Bluetooth polar transmitter. When I use my tablet I can set it up in view and see the stats moving in large numbers

I have a Galazxy Note 12 so it is large.
Here are two links to info on heart rate monitors and calorie burns. It seems they read it all in different ways and some are more by movement. Also it is a bit hard for weight training to be accurate because a lot measure VO2 (oxygen) and heart rate. I am enjoying checking it all out and it takes a bit of the stress out of it.
www.wired.com/2012/08/fitness-trackers
www.myfitnesspal.com/blog/Azdak/view/the-real-facts-about-hrms-and-calories-what-you-need-to-know-before-purchasing-an-hrm-or-using-one-21472
Weights today dropped some. I think I need to do something light next week. The only parts of me that are not sore is arms and abs.
SIngle Set
Sumo squat 15r x 20; 12r x 35; 8r x 45 dropped to 8r x 40 (up 5 only because I didn't have time to get the other weight plate off)
Super Set This is tough on the knees I lowered to prevent injury again.
Alternating lunge 15x10; 12x15; 8x25
Step Ups to Reverse Lunge 15x10; 12x20; 8x22.5 right then same left
Giant Set
Parallel squat 15r x 20; 12r x 25; 8r x 35
Bulgarian squat right then same left 15r x 15; 12r x 20; 8r x 22.5
Straight leg deadlift 15r x 36; 12r x 41; 8r x 51
Giane Set done twice
single leg calf raise 30 sec 25# 26 reps first time, 25 second
seated calf raise 30 sec 25's didn't count reps
in and outs 30 sec in and outs
Roselyn, still praying.
Debbie, yes, there are lots of variables. My Fitness Pal and Map My Fitness are both by Under Armor. As I said MMF gives a place to put what type of workout in but it doesn't seem to make a difference once it hits MFP. In fact it entered the cardio and calories twice and a different calorie burn, only slightly calling one vigorous bicycling and the other light bicycling under 23 minutes. I just deleted one and used Polar. And as I said it puts everything else as general when I put it in. Stress and factors like dehydration can make a difference too. I know lack of sleep affects it because I have seen it. Does your Fit Bit give calories burned and HR ? Just curious. Really though as far as MFP is they are much easier to track food and not bad with cardio. I have an app I paid 10 dollars for and it takes way to much input on my part.