10× World Champion. Chief Fueling Officer at Fuelin. 🐐
We’re proud to have Daniela Ryf, widely recognized as the GOAT of women’s triathlon, as part of Fuelin as our Chief Fueling Officer. Known to fans as the “Angry Bird” for her fierce focus and unstoppable drive, Daniela is a five-time IRONMAN World Champion and five-time IRONMAN 70.3 World Champion, one of the most dominant and consistent athletes in endurance sports history.
Beyond her unparalleled racing career, Daniela has always been deeply curious about how nutrition and fueling shape performance. She studied Food Sciences & Management at HAFL (School of Agricultural, Forest and Food Sciences) in Switzerland and has long explored how precise fueling can elevate recovery, performance, and longevity.
How it started
Daniela and Scott Tindal, Fuelin’s Co-Founder and Chief Nutrition Officer, first connected over their shared passion for nutrition and fueling. Their conversations revealed a mutual belief that nutrition is the foundation of performance, not an afterthought.
In 2024, Daniela met Jonathan and Scott, the co-founders of Fuelin, in person at IRONMAN Kona, and the connection was instant. She loved what Fuelin was building and saw the potential to help athletes everywhere fuel smarter and perform better. The rest is history.
Role at Fuelin
Daniela brings her champion mindset and deep understanding of performance to Fuelin, helping shape the evolution of our product—particularly how it adapts to women’s unique physiology, health, and fueling needs. She’s also a regular guest on the Fuelin Sessions Podcast, where she joins Scott to share insights on performance, longevity, and the future of fueling.
Featured in
Instantly unlock custom nutrition coaching to power your goals
Simple.
"Less guesswork, smarter fueling, faster recovery—more time to train!"
- Nathalia C. (Endurance Runner)
Personalized.
"Nutrition made easy—it’s personalized to my goals, workouts, and lifestyle.”
- Mike Q. (Recreational Triathlete)
Adaptive.
“I love how Fuelin adjusts to my workouts — a personal nutrition coach in my pocket.”
- Jack T. (Age Group Cyclist)
Fuel Your Purpose in
1-2-3
Sync your training, we handle the rest.
Learn how to fuel just right.
Fuel Smarter. Train Harder. Race Stronger.
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Fuel Your Purpose in 1-2-3
Sync your training, we handle the rest.
Learn how to fuel just right.
Fuel Smarter. Train Harder. Race Stronger.
Built by Experts. Driven by Science.
Scott Tindal
Accredited nutrition coach to professional triathletes and executives. Over 20 years experience in professional sports.
Dr. Alan McCubbin
Accredited nutrition coach to professional triathletes and executives. Over 20 years experience in professional sports.
Megan Foley
Accredited nutrition coach to professional triathletes and executives. Over 20 years experience in professional sports.
Whatever your purpose, we tell you how to fuel.
Fuelin Works
Here’s The Proof
Our Community
“Before finding Fuelin I wasn't aware that a system existed that could accurately account for my training on a day to day basis based on the training my coaches set for me. It just takes the guesswork out of the whole process and has empowered me to properly fuel my body. I've felt increased energy, better recovery and more consistency. Also, practicing my race nutrition in training has led to greater confidence in my plan and becomes more second nature so that I can make sure l hit it in a race.”
"Fuelin has been a key factor on my training for Ultra Distance Triathlons. Fuelin has helped me complete my trainings and races feeling strong all the way through and recover faster, making my training more efficient."
"I feel lucky that we live in the age of information. However knowing what information is valuable is key. I am in safe hands with Fuelin and the team of experts in the field of nutrition for me to perform at my best."
"Fuelin has helped me nail my nutrition, not only for my sport, but for my overall health. This app is a game-changer for endurance athletes!"
"As an original partner of Fuelin since its inception, I’ve witnessed its tremendous impact on athletes at every level—from Purple Patch pros to individuals striving for better energy, health, and performance. It’s an integral part of Purple Patch programming.”
"Long story short, I went to the line at Ironman Indian Wells 70.3, healthy, feeling fresh, and at an ideal race weight, and I finished with my fastest closing mile, a PR, and a top ten AG place."
“Fuelin has been a game-changer in optimizing my athletes’ nutrition, helping them perform at their peak when it matters most.”
"It’s easy it’s simple and it’s super effective. It makes my coaching and my own athletic performance so much better."
"I really love Fuelin! Not just for the nutrition guidance on the app but also for the amazing education I have gained."
Got Questions?
We’ve Got Answers
Yes. Whether you’re new to training or an elite athlete, Fuelin’s personalized approach works for every fitness level, age, and gender.
Yes. Our science-backed approach combines your training schedule with personalized nutrition to reduce body fat and support sustainable weight loss.
A simple visual guide for carb intake around exercise: Red = Lower, Yellow = Moderate, Green = Higher.
We don’t offer a free trial—and there’s a reason for that. Fuelin works best when you’re all in. Thousands of athletes have improved their health and performance through our personalized coaching. Nutrition can feel overwhelming, but we simplify it. Stick with us, and you’ll likely see results sooner than you expect. If something feels off, just reach out—we’re here to help.
Fuelin provides a customized nutrition plan with precise macros and calorie targets based on your dietary preferences, activities, and nutritional needs. Our goal is to make fueling your performance simple and effective.
