Skimble

Maria Ly, Co-Founder

Salt Lake City, UT
Maria Ly co-founder of Skimble and their Workout Trainer app AI workout trainer logo
Warm up: from cheerleader to founder

Maria has never been one to sit still. As a former member of Canada’s youth power cheerleading team, she’s flipped, tumbled, and soared through the air on the world stage.

Today, her moves look a little different: more likely on a climbing wall, skiing down a slope, or biking a mountain trail — but the drive behind them is still the same: a love for movement and the belief that it can indeed transform lives.

“I’ve always been into athletics and love being active,” Maria says. “But I know a lot of people don’t know where to start. So I wanted to create something that could guide them.”

Her tech background gave her the perfect springboard too. After a career that began at Google and included a stint at a mobile analytics startup that was later acquired by Yahoo, Maria had both the skills and the entrepreneurial itch to build something of her own. She’d even run a small mobile business back in high school.

Plus, the timing couldn’t have been better: smartphones were beginning to change how people engaged with health and fitness, and Maria saw an opportunity: a trainer right in the palm of your hand, one that could deliver expert-led workouts anywhere, anytime.

She co-founded Skimble and launched its flagship app, Workout Trainer, available on both Android and iOS. And from day one, the mission was clear: make fitness accessible to anyone, at any level, with personalized training plans and plenty of free content.

“We want to make fitness accessible for everyone at all stages of their journey,” Maria explains. “A lot of our training is free, and you can upgrade to our Pro+membership in-app if you want to really make a commitment.”

Workout Trainer AI app screenshot
Main set: keeping fitness accessible

From the beginning, Maria wanted to keep a large portion of Workout Trainer’s content free, a philosophy that aligns perfectly with the ad-based business model.

“It just makes sense,” she says. “I don’t want cost to be a barrier to better health.”

In order to do that, Skimble turned to Google AdMob as a way to support the business without putting essential workouts behind a paywall.

“People understand that’s part of the deal,” Maria says, “and in return, they get high-quality training they can access anywhere.”

That approach has done more than cover operating costs like app hosting, content production, and AI integration. It’s also fueled growth.

Skimble now works with trainers worldwide to create thousands of exercises, from beginner yoga flows to challenging HIIT circuits, and uses AI-powered feedback to give members personalized form scores and even assess their performance.

Ad revenue also means Maria can invest in features that keep the experience fresh and competitive in a crowded market.

“We’re always looking ahead,” she says. “We want to keep innovating so we can deliver the best possible user experience with real trainers and AI.”

“I don’t want cost to be a barrier to better health... Ads let us offer a free tier so that anyone can access and try out our services before committing. That’s huge for inclusivity in fitness. And as our audience grows, so does our ability to give them more. More features, more workouts, more motivation.”
Cool down: growth and giving back

Over the years, Skimble’s reach has expanded globally, getting millions to become (and stay) active on their own terms. And Maria hasn’t forgotten her roots in the startup world either. She regularly shares her insights by mentoring emerging founders and investing in early-stage startups.

“I want to help the next generation of entrepreneurs find their footing and thrive,” she says.

The company’s growth has also allowed Maria to keep exploring new ideas to deliver on Skimble’s mission. The list is extensive: AI-driven training, more comprehensive workout libraries, even innovative social features. She’s building a platform that doesn’t just keep people moving — it keeps them connected.

Looking into the future, she sees the ad-supported model continuing to play a central role. “Ads let us offer a free tier so that anyone can access and try out our services before committing,” Maria says. “That’s huge for inclusivity in fitness. And as our audience grows, so does our ability to give them more. More features, more workouts, more motivation.”

In Maria’s eyes, movement is more than just exercise; it’s a way to live better, longer: “if we can help someone build a healthier, happier life, and remove barriers to getting started, then we’re on the right track.”

About the Publisher

Maria co-founded Skimble, the company behind Workout Trainer AI, a leading mobile fitness app. Based in Salt Lake City, she works with trainers worldwide to deliver personalized, AI-powered training plans and performance feedback that help millions of people stay active, wherever they are.

Maria Ly rappeling mid-air over mountain cliffs