Need to consult a UX designer for a Maths Practice App we are building

I am a teacher and have been building a Maths Practice App for students. The goal was to make maths practice as engaging as games by using game design elements and inducing flow in the students.

So far in our MVP pilot runs, the game mechanics have worked really well and students are very happy with it. Planning to work on a slightly more enhanced version of the app and working on certain aspects which are clear blockers.

I needed some advice and help on the UX design. Would want to connect with anyone who has experience of UX design, some time in their hands and a gentle heart. I am completely bootstrapping this project - so don't have a ton of money to offer. But hopefully, the project would be interesting enough and will try to make it worth your while. Drop me a text at rajeev@pixelmath.org if you are interested to help.