How many calories should a girl eat per day?

Azurababy
So i am a 19 year old girl, i weigh 128 and i'm 5'3. The past year i have lost a lot of weight by cutting out sugar almost completly (for oter reasons) i have recently downloaded an app that says if i eat 1185 a day i could get to 120 in 70 days, is this possible and acceptable? I do exercise daily.. Walks, jumping jacks, squats, pushups, running etc .. Also, i need help with food ideas.. Something that is healthy, low enough in calories but filling enough. I would like to weigh around 115-120 then tone up a bit? Also any excercise ideas would be great.

Thanks
How many calories should a girl eat per day?
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