With respect to the microphone test site I don't need it as my OS provides everything I need for this and I also don't trust your site (that's just by default for what you're asking to have access or my machine).
As for the speed test, OK? There are far better options that already exist and are fully open source.
Building things that are trivial, or already exist aren't exciting. It's great that you feel you went from MVP to "full feature". But IMO both of these are MVPs as they stand. They're not worth much to anyone but you, most likely.
The final thing I'll say is both of these examples have the vibe coded look. It's just like text, images and audio now: AI content is easy to pick out. I'd gather things will get better, but for now there's low likelihood I'm interacting with these in any meaningful way and zero chance I'm buying anything from sites like these.
The problem I have with this type of perspective is that it's so myopic you don't seem to understand this is not even remotely anything I'd consider a "utopia". Some vibe-coded AI apps do not solve for that IMO. If that's all it takes for you then I say: enjoy.
I've built tools like this on the web in the past. They were never more than a weekends worth of work to begin with.
I am looking for exponential increases, with quality to back it up.