You could use the Node-Red dashboard, but that’s not very good as far as functionality is concerned.
You could also push legacy local server data to the new IoT app using Node-Red, but of course you’d need a Blynk IoT subscription for that, which kind of defeats the object of the exercise I guess.
Otherwise, it’s a case of using a different front-end instead of Blynk. I did a lot of research into the various options when Blynk IoT was launched, but nothing worked as well for me as Blynk.
You might also need to consider whether this is going to be an issue…
Pete.