[zapt02]

That would work for a while but if you ever needed to set it up on a new Wifi network you would be screwed, as the app is required for initial setup.

[TeMPOraL]

One thing I've learned over the years is that it's good to "own" your SSID, and preferably stick to pro-grade routers that let you configure local network addressing. As long as you stick to Internet providers that let you run their hardware in "bridge" mode, it means you don't have to set up new WiFi networks at all.