The fast-growing pot industry not only raked in $2.7 billion in sales this last year, it’s also produced quite a few ganja-based startups. It’s legal to light up a bowl for recreation or medical reasons in 23 of these 50 United States now and soon as there’s a growing industry, there are technological innovations to support it. We’ve counted at least 8 on-demand delivery apps out there that will bring medicinal grade weed varietals right to your door.