Very important question. I'm kinda of newbie in mobile performance marketing.
Let's talk about which channels bringing you the most value?
From classical ones, I know:
Could you suggest me more? What app do you have and what's your favourite ad channel?
Before focusing on performance marketing for a mobile app, which I assume is B2C, I would start by looking at your core user metrics.
You could quickly lose a lot of money by pouring money into a sales funnel that doesn't convert.
Still, if you had all your metrics figured out, I would start with one channel, figure out a setup that is profitable and then experiment with other channels.
What does your app offer if I may ask?
Our app best fits in lifestyle / self-care / productivity category. It's content-based and we are going to monetize content itself.
Our core event - check-in. All app is about adding new activities and completing it. We develop roadmaps in different areas to help users achieve their goals: enhance relationships, develop their skills in finance, raise self-awareness, learn how to care about themselves. We offer users these roadmaps which include daily tasks and habits are needed for kickstarting positive transformation.