47. Google Trips is amazing.
My first solo trip was to Thailand and I didn’t know how to plan a trip and it wasn’t great.
My second solo trip to Japan was amazing because of this app. Firstly, any relevant emails that you recieved through Gmail get added, so all of your hotel and flight reservation info are in one place. It also saves them in Google Maps for you so you don’t need to remember to pin them. Phone numbers and addresses too, so you can show a taxi driver. Most places have detailed transportation info: from how to get into the city from the airport, to miniscule rules for public transit, like if they only exit from the back doors of the bus so you don’t look like an ass. They mine Maps for tons of restaurant reviews. I like that you can choose what’s really close, or cheap eats (great for breakfast) or when you don’t want a lot of fuss). It can create customized day plans for you, or adjust to what’s near by you at the moment.
There’s tons of other cool little features too. And you can download most of the info in case you don’t have data. I can’t recommend this enough!