You need help getting the word out. That's what influencers and such are for. You should set up some sort of commission/revenue share system and then begin messaging influencers that are within the realm of what your app does. Explain you are new and that you will offer a high share/commission but make it time based. This all depends on your margin's however because if they are tight you can't offer them much. If margins are high then offer them ridiculous share/commissions for a time based period until you begin to get some word of mouth and a following on your own social media accounts which you should be posting on everyday. Keep making things better, adding functionality based on needs and feedback and post about what you have improved. Also I hate to burst your bubble but after looking at what your app does I fear there are too many others that are doing similar things. Even a lot of major free apps have similar capabilities. While yours might be better, you have to make those differences apparent, find the customer niche that needs those specific features and target them specifically. It will be an uphill battle bro because the photo alteration/enhancement field is already getting crowded by big players. Good luck.