Coloring isn’t just for kids, and it’s far from a new idea for grown-ups looking to settle their minds. Adults have reached for colored pencils to unwind for a long time, and the size of the habit shows how mainstream it has become. Estimates of the global adult coloring book market vary widely with how the category is defined, ranging from around $150 million to roughly $1.8 billion today, with projections of about $3.2 billion by 2034. Much of that momentum is credited to demand for stress relief and mindfulness practices, and North America holds the largest regional share.
As phones and tablets became the device always within reach, the coloring-book craze spilled into the app stores, and today plenty of people do their coloring on a screen, whether tapping in a mandala on the train or filling a digital page before bed. What follows is a therapist's view of why coloring can be so settling, what research suggests, and ten coloring apps that may be worth a spot on your home screen.












