I found a way to avoid the 3-audio limit per day, and it’s been working great for me. Using Google Gemini, I wondered if it could imitate and produce a dialogue like the ones in the Notebook KLM app. And honestly, it did an amazing job. It sounds really similar and you can tell it understands how those dialogues are made.
With a good prompt, I managed to generate a text very close to the app’s style, then I put it through a TTS, and it worked perfectly. Of course, the final quality depends on the TTS you use.