“We don't have that many app subscribers... a lot of people who are engaging with the content that are maybe not interested in the app because the app has a very specific use case... whereas YouTube — oh, you want to go swimming? Like anyone who wants to improve.”

Wide-funnel YouTube > narrow app persona — and that mismatch is fine

The app targets a narrow persona; the YouTube audience is anyone who swims. Fares is fine with the mismatch — the wider audience funds the content engine (AdSense + brand deals) and feeds future product expansion. Don't constrain top-of-funnel content to your exact ICP; let the channel be bigger than the product.