It's not free. Also an app with in-app purchases is not free. I think in a crowded category at least one app is going to be genuinely free without ads or freemium.
Hmmm... I just took a look at the app. It is not bad. Contrariwise, there's nothing extraordinary, either.
Looking at the comments, I saw one complaint about the notification alarm, which is always the phone, not the app, and one asking for a note field.
Seems to me there's a note field now, and the app generates a notification at the set time - I'm on lollipop and it sounded just like my other notifications as I expected.
IMHO, the reason is that like myself, people searching for task specific utility applications install handfuls of them to try them out and see what features they offer.
Take that behavior into account and go forth!
I like your app. I may not keep it since I don't actually need one, though. But it's not hurting anything and it can live there until I need space.
Edit: DotNick: It's 9am and my 10am reminder just soudned off....