Friends-only, one-on-one (Buy Me a Matcha)
Best if you want one real person to meet in Tokyo for coffee, a walk or sightseeing, in English, with no dating. Women-only option, and a "Tourist" setting so people know your dates.
You're visiting Tokyo, you speak English, and after a few days of solo sightseeing you'd love someone to grab a coffee or explore a neighbourhood with. Not a date, not a hookup, just a friend. Here's the short answer, what each kind of app is good for, and how to make it work in a short trip.
If you want to meet one person for a coffee or a walk, in English, with no romance involved, use Buy Me a Matcha: the only app built specifically for English speakers to make real friends in Japan. It's friends only, everything is in English, you meet one-on-one over a matcha or coffee, and you can switch on a women-only setting. When you sign up you can choose "Tourist" and add the day you leave (your profile then shows "Visiting · until" your date), so the people you meet know you're in town for a short time. It's free to start on iPhone.
Best if you want one real person to meet in Tokyo for coffee, a walk or sightseeing, in English, with no dating. Women-only option, and a "Tourist" setting so people know your dates.
Good if you're happy in a group: language exchanges, walking tours, social nights. Easy to join, but harder to get to know one person in a short stay.
A friendship mode inside a big app known for dating. Works in some cities; in Tokyo it's worth checking how many people are actually active near you.
Great for chatting with Japanese people online. Many users want to text, not meet, so they're slower if you only have a week.
Yes. Lots of people living in Tokyo enjoy meeting visitors: they like showing off their favourite café or neighbourhood, and it's an easy, low-pressure meetup for them too. Just be upfront about how long you're here, which the "Tourist" setting does for you.
Friends only, all in English, one-on-one, with a women-only option. Pick Tourist and add your dates.

Buy Me a Matcha, if you want to meet one person in English for coffee or sightseeing, with no dating: it's friends only, English only, one-on-one, has a women-only option, and lets you sign up as a Tourist with your leaving date. For group activities, Meetup-style events work too.
Yes. Choose Tourist when you sign up and add the day you leave. Your profile shows that you're in town for a short time, so people can say hi quickly.
Yes. Buy Me a Matcha is built only for friendship. There's no dating mode, and everyone there is looking for friends.
Buy Me a Matcha has a women-only setting, so you can see and be seen only by women.
No. Everyone on Buy Me a Matcha speaks English, and the app is in English.
Yes, it's free to start on iPhone, with optional paid extras.