Arduino Block type Programming - Which one

Hi

Noobie.

Looking at purchasing a Uno with BLE and a motor shield.

For a beginner what is the best/easiest block type program to use. All I want to do is to have a BT device with a variable speed slider and 2 button (fwd and rev),

So blocks will include BLE connection and motor control via shield.

Advice would be great on simplest best Android app for using a vertical slider and a couple of buttons.

Thanks

Charles Harris

Can anyone help with my question?

Thanks