22. Transit is an app that gives real-time data on busses and other public transportation services (including GPS locations of the vehicles!). I used it in Canada in a few cities in my province, it might work elsewhere.
23. Should I Answer. It’s free, and can auto block spam callers if you’ve been called by them before. It also has reviews from the called, saying what the number is (call center, debt collection, car dealer etc…)
24. iNaturalist. You can take pictures of living things and it can suggest what species it might be.