Good questions.

That first one’s a real head-scratcher: who would ever want to be the very first member on a dating app? I hear Tinder had “launch parties” but then I’m sure they had about 100% more funding that I do (which is none). In fact, what even is the smallest useful density of users? It’s obviously quite varied across geography, it won’t matter if there are 100.000 real people if they’re all in Belgium (sorry, Belgium).

One approach to lessen scammers is to require phone numbers rather than email addresses, and yes I’m aware that “lessen” does not equate “fix” – not by a long shot. There’s plans for supporting national eID’s of various target countries, but that should/will be a voluntary thing for users, but not every nation has a solution that “random apps” can build an integration with. Another remedy, I’m afraid to say, is to have no free tier - in fact my plan is to have only a paid tier, but also only one paid tier (reasonably priced, even) so everyone get’s access to everything on a level playing field. Then peer review and moderation (if people can be made to be arsed about it).

Lastly, one way to answer that is the wry practical perspective of (a) having few users (in the beginning at least), (b) don’t aim globally, © efficient data schema, (d) offer relatively low-res photos (eg. 800px should be “good enough” for a 3-inch-wide display), plus a bunch of other practicalities. Seriously, you don’t need “real time”, if you can’t be patient enough to wait for ¼ second between swipes, you’re probably not going to be a fun date anyhow. The real selling point is the features, not the performance.