Ask HN: If .com taken what is best TLD?

Decided on name for an app but the (app name).com is (of course) taken.

.net is available so are all other TLD/ccTLD

At the moment the website would just be to tell people about the app and links to app/play store. It is possible in the future users could access some functionality of the app via the website but not any time in the next 10 months.

.net is not used a lot but would one pick that over say .io? Could also have (app name)APP.com or get/join/use (app name).com though down the line that would not be as good.

Any thoughts would be appreciated.

btw the .com has been registered for 12 years but is not in use.