Both Tinder and Grindr are a thing, and so are Hornet and Jack’d. I’d say that most of gay dating in Taipei happens in the apps.
Also, night clubs. To mention some:
- G*Star is the largest and most popular: k-pop heavy and attracts younger crowd
- Abrazo is smaller and very crowded on Saturdays (if it bothers you then Friday is a better day to go). Attracts mostly professionals. Western & Taiwanese pop music.
- Fairy is similar to Abrazo crowd wise but but more for hanging out and chatting. Also gets quite crowded.
Generally bars/clubs are good places to make friends too. I made my first Taiwanese friends in Abrazo. Local gay scene is friendly and welcoming. I found that having chatted with someone at a bar got me invited to hang out with their group of friends later (never happened in London where I lived for 10+ years).
As mentioned before, Red House in Ximen is also a great place. Above mentioned Dalida is my favourite, too. Ximen area is full of gay and gay friendly places and bars. If you are into more kinky stuff then maybe check out Commander D (they have underwear parties, etc.).