I am a first time sole-founder that has just released a Music / Social App - Festlove on the IOS store. I funded my app via bootstrapping and I outsourced the development. As I work full-time I find it hard to give my all to the app, and in turn it's not getting as much traction as it could. I want to get investment to build a team as well as other things and really get the app off the ground but am finding difficult I wanted to know what I could do to make my start up a more attractive investment?
I really think you should focus on getting that traction before even worrying about investment. If you have a full-time job, you can side hustle your way until proving the value of your app and then, yes, look for funding.
I would say that your focus should be on understanding if your are offering a solution to a problem a sizeable amount of people have. Once that is clear, you can start worrying about growing.
Feel free to connect with me. I am happy to discuss this further with you!
You should have a look at the Crowdfunding site 'Kickstarter' which helps raise funds for artistic projects.
If you have already been turned down by investors, the first step would be to ask them this question.
If it looks like your business may not ready for investment yet, look at first getting a loan to help kick start things. There are good entrepreneur loans backed by the SBA (small business administration). You can either go to the SBA to find out who your local lenders are the support SBA loans or contact your local SBDC (small business development center) and SCORE offices. They will be able to direct you to SBA lenders as well as help you get read for investors and any other business needs you have....and they are both FREE resources.