Work through sections 1 to 7 from top to bottom. Then press "Copy results" at the bottom and paste the text to Claude. Do the whole page once on the laptop and once on the iPhone (installed to the home screen).
Press Play on each voice and rate how natural it sounds.
Press Record and read this aloud: "Guten Tag, ich heisse Bence." It records 5 seconds, then plays back.
Press the button, then do not touch the device for 2 minutes. The screen should stay on. On iPhone, do this in the installed app (home screen icon), not in Safari.
The page says a sentence, then records you for 4 seconds (repeat the sentence), then speaks again. Listen if the second sentence is as loud as the first.
After signing in: (a) press Write. (b) Switch on flight mode, press Write again, then reload the page. The last value should still show. (c) Switch flight mode off. "Waiting to sync" should change to "saved on server".
Needs sign-in (section 6) and a recording (section 3). Paste the Groq key once. It is stored in your private Firestore document, never in the page or the repo.