Custard apple
Sugar apples, also known as sweet sop, custard apples and Atis fruit, are the most widely grown member of the anonna family of plants. Growing on the sugar apple tree or annona squamosal, it’s a close relative of the soursop and cherimoya, which has All of these fruits are popular in the Caribbean, South America and parts of Asia.
It is called Sitaphal in Marathi language.
source -https://tipbuzz.com/sugar-apple/