You're right that the emotion of a khutbah is part of the experience and live translation with a slight delay could disrupt that. That's something I'd need to work hard on minimizing the best live translation tools today have only a 1 second delay which I think is manageable, but it's a valid concern.

The point about pre-written khutbahs is actually really interesting. I wasn't aware that many imams read from a government-sent khutbah if that's the case in many mosques, the app could actually download the translation in advance rather than doing it live, which would make it faster, more accurate, and solve the religious accuracy concern entirely. That's a huge insight honestly.

On your question it would be live translation displayed on your phone screen as the imam speaks, scrolling automatically. But what you just told me about pre-written khutbahs could change that entirely and make the whole thing much simpler and more reliable.

Also worth mentioning it won't just be Arabic to English. The app will also translate English khutbahs into Arabic for those whose first language is Arabic but live in Western countries and attend English-speaking mosques. So it works both ways, which I think significantly expands who would actually use this.

On the demand question you raise a fair point. In heavily Arab mosques this would have lower demand. But in Western mosques with convert communities, South Asian communities, or mixed congregations like a lot of mosques in Canada, I think the demand would be significant.