The Iconfactory is jumping into the iPad sketch app market with its brand new Linea app, and based on our tests, it’s pretty cool. Linea is going for drawing and sketching, not digital painting, and it has the right tool set for the job. It comes with four pen tips an dan eraser tool, support for five layers, blending and transparency modes, graph paper grids, and one of my favorite features: tap a swatch on the color palette to see several shades for that color. It also includes Apple Pencil support and offers pretty flexible image export options. Linea is priced at US$9.99, and it’s one of the few sketching apps that gets to stay on my iPad Pro.