Is it worth it building a productivity app?

Hi - I've spent so much time trying to build my productivity app but there's so much competition out there. Although I do enjoy working on my app Dysperse (@dysperse on Instagram), it's been a struggle trying to make it compete with other established personal to-do list applications out there. It does have unique features like widgets and it's completely free but I feel like I have hit a plateau where I don't know what else to do. I'm not really sure if working on it will actually help me. Compared to the rest of the apps out there - is it worth working on it?