Some people commenting this to be overpriced, but I don't think so even if they are considering the INR value. The bug is quite critical considering how large the mac and iOS ecosystem is.
"... to their exam-apporved calculator case" is a very good point, this calculator is basically used by every engineering student in their exam. And it clear that they feared that their sales might get hurt.
Thanks for the comment, I came back to TabNine after your previous comment, and I am glad that the issues (mostly performance) looks to be resolved, yet I need to play more with it.
There has been questions to apple-google ct too, but I always take any country's gov's actions with skeptism. Especially, when they are not making the details/specs public.