Yes, I have used it for some time this year when I didn't have any credit cards.
It works the same as credit cards just with a lesser limit. I got a Rs. 15000 limit. You can buy anything on Amazon using APL and then you need to pay the outstanding before the due date.
One of the best things is that Amazon doesn't charge anything extra when buying using APL, unlike Flipkart Pay Later.
One drawback I see is that they haven't increased my credit limit so far. While Flipkart has increased the limit multiple times.
Let me know if you want to know anything specific.