That's a very harsh comment to give someone that has poured hours of their life into something trying to help others unpaid. You could at least politely ask what makes it different than redash.
Perhaps a bit impolite, but no offense taken. It's a very crowded space and there are a ton of good tools! I work on SQL Explorer simply because I get to make the thing that works best for me.
Redash is very focused on visualization. SQL Explorer is not. It is going more in the direction of in-browser analysis.