> I've noticed some new routers (e.g. the Eero from our ISP) can only be controlled via an app. Does that mean they can be controlled remotely?
Probably.
On top of this a lot of routers will use TR-069 that allows for remote management of your router by your ISP. So even without a app its likely it can be controlled remotely.
For ISP-provided routers, this is a valued feature (for the ISP). It's a lot cheaper to reconfigure a customer's router remotely than it is to send an engineer out when something is not working.
I've noticed some new routers (e.g. the Eero from our ISP) can only be controlled via an app. Does that mean they can be controlled remotely?