This app was mentioned in 2 comments, with an average of 1.50 upvotes
If you're only interested in Sanskrit vocabulary, Spoken Sanksrit is a good dictionary to start with. If you're also interested in basing your conlang off of Sanskrit grammar, it's tougher, but for a basic idea of verb conjugation and noun declension, check out this page, or here for a very good android app.
I don't know if this app is available in Nepal, but it's a good start. sanskrit primer app