Ask HN: What travel apps do you use while traveling?

Curious what travel apps the HN community actually finds useful when traveling internationally.

I'm particularly interested in: • Navigation and getting around unfamiliar cities • Dealing with language barriers • Finding local experiences vs tourist traps • Any apps that have genuinely saved you time or made travel easier

I've tried Google Maps, TripAdvisor, and the usual suspects, but they all feel generic. What do you use? Any hidden gems?

(Context: I'm working on a travel app called PAVO Travel, so trying to understand what features travelers actually need vs what developers think they need)