Confused about calorie trackers

So, I have been using tap and track - which, when I fill everything out, tells me I can eat 884 calories a day. When I add my normal daily kickboxing, it jumps me to 1769 per day.

However, I just checked out SparkPeople, which tells me I'm supposed to eat 1200-1400 per day - regardless of if I kickbox that day or not. If I burn 884 calories per day on SparkPeople that only leave my body 300-400 to do everything else per day - that seems low?

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