Not to be an asshat, and I'm sure that app is close to what you were looking for... but....
Your work (practice) is going to be best served with your bass in your hands. True that at the beginning stages you'll need to: 1. Look at the note, 2. Name the note in your head, 3. Find the note on the fingerboard, 4. Play the note. Ultimately the goal is to look at the note, play the note... and the sooner you get rid of the intermediate steps, the better you'll be.