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"Some people make fun of the coloring apps, but it does calm you down and help you be creative, " says Lotrič. "We colored as kids and then we forgot. Life happened. But that doesn't mean we should stop."
Here, a look at four international Lake artists and their work.
Walid Rusdianto, Indonesia
In Walid "Embe" Rusdianto's coloring book, Imaginary Friends, you'll find surreal of people, creatures, and everyday objects. His work is equal parts silly and strange.
"I'm from a village where 'artist' is not a good job," says Rusdianto, who is studying visual communication design.
"When I was a kid, I really liked cartoons on TV, so I started to draw them in my textbooks and even on my walls," he says. "My parents caught me and told me stop drawing, but I didn't."
"Fortunately, my mother understands me now and lets me choose my way."
Laura Uy, Canada
Laura Uy's two coloring books, The Whimsical Wild and Foodoodles, are undeniably adorable, full of tiny forest animals and personified pastries.
"I used to draw burgers and fries as a kid. I did this giant burger terrorizing a village of vegetables." Uy says.
"My parents were very supportive of my art when I was young, and that's good because I would make a pretty bad scientist."
Sam Moore, New Zealand
In Sam Moore's coloring book, Ugly Ink part 1, you'll find aliens doing surprisingly normal things--drinking coffee, taking baths with rubber ducks, wearing Letterman jackets.
"I find ugly things way easier to draw than pretty things," Moore says. "You'll see that if you look at my work--there aren't many supermodels in my world."
Art happens to run in Moore's family.
"My mum painted, my grandmother painted, and my dad was an art director, so I really had no choice!" More says. "I was always drawing, usually a giant space battle or some sort of alien creature."
Maja Säfström, Sweden
Maja Säfström quit her day job as an architect to pursue her art full-time. In 2013, she started an Instagram account, where she shared daily drawings, and has since published two books of illustrations with a third on the way. She's also working on her second Lake coloring pack.
"I have learned a lot about how to make artwork so that the coloring experience is even better," Säfström explains. "I draw by hand, scan the drawings, and then make adjustments on my iPad Pro."
Säfström was one of the first artists to collaborate with Lake, and she remains one of its biggest cheerleaders. "Lake is a beautiful app," she says. "In a very intuitive way, it Lets users explore the work of international illustrators and artists."
App Store Screenshot Images of Lake: Artists’ Coloring Books