It isn't until you hit the Draw button that a pixel is placed at the cursor's location on-screen (so you're likely going to have to use both of your hands at once).
Tapping and dragging in Pixilart, however, will only move your cursor around. This can be difficult to control unless you're zoomed in really far.
Before Pixilart, apps made specifically for creating pixel art would draw pixels on the canvas as soon as your finger hit the screen.
Pixilart is the app that brought what's possibly the best approach to creating pixel art on mobile.
