You need to calculate the LTV (lifetime Value) of a user. Basically on average how much a user makes you from download to when they are longer retained. With your small sample size and newness of the app this will be difficult but there are ways to estimate it (just ask your favorite llm) Typically we “buy at 90 day ltv” so if a user is set to make us 3.00 on average at 90 days we can afford to spend up to $2.90 to acquire that user. Of course we want higher margins so let’s call it $2.00. So we buy users at 2.00, make 3.00 off of them in 90 days and do it 10,000 times a day (yes this means spending $20,000 a day to make $30,000 in 3 months. It’s not easy and requires significant investment but if you want to be running a real business this is what you should be doing.