Have you tried using it?
No haven't downloaded but did check the vid and all it shows is that you focused on the interface instead of a good workflow. Don't get me wrong a good interface helps, however I am willing to struggle with a bad interface to get good results.
I will also only buy an app if it looks worth buying, if you had a trail that would be different.
When working with pixel tools there are a few things I look for:
Ways to reduce the amount I need to draw, for example your app allows a artist to draw spheres into a image however they will need to copy and paste it into each image or redraw it; that is a bad workflow and many graphic editors allow for better workflow.
Simple ways to animate. Spine and many other 2D animation software allow bones to pose and animate, even the ones where you draw each frame(Like flip book, that is an app that I have) allows a transparent overlay to show how the previous frames work.
A way to plan animations. Again overlay can work here the bone animation types allow you to see the curves of the animations and allows you to correct it.
like animation or handled tile sheet import/export
Tile sheets are often constructed outside of the app as this allows for composing, there is more to a tile sheet than just sticking images on a piece of paper. Your tile sheets shown in the video didn't even meet "the power of two" standard that most game engines use.
search term "pixel art"
Experienced animators won't include "pixel art" in there search because any animation tool can make pixel art, you just need to use a small image size. If you want to be a pixel art tool then think of reason people that make pixel art would prefer your tool over normal animation software.
At the moment you have a grid, that helps. It's strange how many other animation tools forget this.
I've had like 10 downloads in more than a week so I'm trying to introduce some people to it via forums.
Artist will tell others of new good tools they find, we do this often we all want an edge. Make a good tool and more people will use it.
Negative troll like responses are really not very useful especially when it is very unlikely you are one of the 10 people that has actually downloaded it.
If this is how you feel when getting such a small amount of critique then don't post on forums advertise instead.
As a artist I make a living on critique, it hurts in the beginning because someone insults some thing you created. That is only what it feels like, in truth I am just point out your weak points, they will always exist no matter how hard you try.
If you are smart you will use critique to find things you can improve, you are a creator now and as such you have a responsibility to what you made, you can't stumble over every flaw pointed out to you.
The apps larges flaw is that I won't replace any software I already have with it. As a professional artist I keep a lot of software and can't just add a new one with out good reason and this isn't better than any thing I have.
Also don't do that thing where you say it isn't a tool designed for professionals, all that does is tell people that you hope to scam a few new artist into buying some thing they don't need and won't be using a few years from now.
Even tools aimed at hobby artist find there way into a professionals hands, because all artist are looking for the same thing: a easy to use tool that delivers good results fast.