extension: suppose you find something similar but not the same, do you build it?
Please mention how you inspect this so I can filter out the ideas to work on.
Looking for existing products is an excuse to quit. If you find something you can say, "My idea isn't worth working on because it already exists." If you don't find anything, you can say "My idea isn't worth working on because there is no market." Both of these are easier than work. Good luck.
about building it fi it exists, if i can see any clear major differanciator i'd build it anyway.