[FBISurveillance]

It's hard to answer without knowing your experience. Usually people here suggest going with what you're most comfortable with.

My personal preference for a new projects in the last decade has been Ruby on Rails. There's not much hype about it anymore but I tend to think it's because it's gotten more mature.

You can host it cheaply on Heroku with simple $7/mo dynos or on a $5/mo DigitalOcean droplet. Another option is to get a new account for your app and get $300 credits on GCP for experiments.

The rule of thumb—in my humble opinion—should be: don't scale until you need to. Vast majority of projects are not going to hit Pokemon Go scale in their early days, if ever.

For what it's worth Heroku supports different runtimes and you're not limited to Ruby on Rains with them.

So use what you're comfortable with, don't scale prematurely, don't use fancy tech for the sake of fancy tech, and ship, ship ship :-)

[eptakilo]

Thank you for the reply. I like your last sentence, that's something. I need to keep in mind.