My first every app. Can I live off it?

I started making this app as a tutorial to learn swift some months ago.

I just kept adding stuff and this is the result.

I've got about 5 active subscribers and 3 more about to convert.

Do you think I can grow this? Sometimes I feel like I should just make another app with a real good idea, not this tutorial turned app.

If I can scale to 20 customers with good churn rate I will keep going.

Feel free to ROAST the CRAP out of the app ;)

I'm an android guy but this looks really good! I made a webapp to manage my tasks and I think that the market is so full of this type of apps that you should create it only for yourself. I would definitely go with a new app. Good luck with which method that please you