Show HN: Prepare for technical interviews with real questions from companies

Hi HN,

I've spent my career continuously prepping and practicing for technical interviews, specifically SQL and python, and mainly for marketing analytics and some data science. I also teach SQL and python on the side and need a platform for my students to play around with.

I built Strata Scratch to help people prepare for their technical interviews and brush up on SQL and python. I loaded it with technical interview questions I've sourced from various sites. We created our own underlying datasets and changed the questions a bit keep original and test specific concepts that are often found on interviews.

The platform is MVP-ish, as it's only a side hustle but it's continuously improving. It's free to try out but has a monthly subscription if you want to unlock all the questions. Any feedback would be appreciated.

Here's a link to a Youtube we did also: https://www.youtube.com/watch?v=n6gM265zG68