How to determine ad budget?

[MichaelMorin]

Hi,

How do you go about determining your initial advertising budget? As in, how much you should spend when you first launch.
And at what point do you reevaluate that budget and adjust it higher or lower later on? Is it when business is dipping? Or when you have more work than you can handle, etc?

Please help.

I didn't find the right solution from the Internet.

References:-
https://bit.ly/2IsoRHi
App video production company

Thanks