- I really love Chronos. A great designed app, I really love the UX. The biggest thing for me is that I can add different cities (where my friends, family or team are) and see when is the best time to contact them. Meetings scheduling is pretty handy too.
- I used https://www.worldtimebuddy.com/ it's amazing!
- a) Easy to add places b) Easy to swipe across the times and calculate corresponding times; all in one place and just one swipe.