Fuelin - Performance Nutrition

Name: Fuelin - Performance Nutrition
Rating: 4.5 (696 reviews)
Author: Thrive AI Labs

Sports Nutrition Coaching

Only for iPhone

Free · In‑App Purchases · Designed for iPhone

696 Ratings
Ages

16+
Years
Category

Health & Fitness
Developer

Thrive AI Labs
Language

EN
+ 1 More
Size

132.9
MB

iPhone

Fuel smarter, train stronger, and perform better with Fuelin — the world’s first adaptive nutrition coach built for active individuals. Whether you’re running, cycling, swimming, lifting, or training for your next big race, Fuelin tells you exactly what to eat, when to eat it, and why it matters. Designed by world-class dietitians and trusted by thousands of athletes and fitness enthusiasts worldwide, Fuelin adapts your nutrition to your training, goals, and lifestyle — taking the guesswork out of eating for performance, health, and recovery. How Fuelin Makes Nutrition Simple • Fuelin builds a daily nutrition plan just for you — it automatically adjusts to your workouts. Add them to Fuelin or sync with Strava, TrainingPeaks, Final Surge, HumanGO, TriDot, RunDot, or Garmin for personalized guidance. • Smart Meals makes it easy to know what to eat anytime, anywhere— get custom meal recommendations with perfect portions, personalized to your goals, training, and preferences. • Logging food is simple and fast to save you time. Talk or type with our AI logger, scan a barcode, or connect MyFitnessPal and LoseIt — no more tedious tracking. • Go beyond calories with smarter tools. Stay on top of hydration with our Sweat Rate Tracker and train your gut with Carb Capacity Testing. • Gain real nutrition skills. Learn portion control, supplement use, and energy balance through in-app lessons and videos designed to build lasting healthy habits. Why Fuelin? • Proven results. Thousands have discovered they can recover faster, lose weight, gain muscle, feel healthier, and have more energy for both daily life and race day. • Simple and personalized. No generic diet rules here. Fuelin adapts every single day to your training, goals, and body. Designed to incorporate your RMR, FTP, and other key performance inputs. • Takes out the guesswork. Save time and remove the anxiety of fueling. Fuelin gives you trusted advice so you can fuel with confidence. • Personalized nutrition and fueling guidance for every sport and race you take on. Available sports include: running, trail running, cycling, swimming, HYROX, rowing, sailing, skiing, football, baseball, basketball, boxing, combat sports, CrossFit, hockey, soccer, squash, tennis, pickleball, rugby, volleyball, yoga and more. Supported races/events include: marathons, half marathons, 10k, 5k, triathlons, IRONMAN 140.6 and 70.3, Gran Fondos, century rides, gravel cycling, criteriums, and more — Fuelin adapts your fueling to match your training and goals. What our members are saying about Fuelin: "Fuelin is the daily companion to take the guess work out of nutrition that I wish I had earlier in my career.” - Jan Frodeno (3x IRONMAN World Champ)" "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!" - Colleen Baker (Gravel Cyclist) "Helps me build awareness and healthy habits, removing the worry and helping me keep on track!" - Rob Castaneda (Age Group Triathlete) "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.” - Holly Lawrence (Pro Triathlete) ________________________ Medical Disclaimer: Seek a doctor’s advice in addition to using this app and before making any medical decisions Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ U.S. Barcode Food Database Powered by FatSecret: https://fatsecret.com International Barcode Food Database Powered by Open Food Facts: https://openfoodfacts.org

Events

MAJOR UPDATE

Nutrition Powered by Strava

Fuelin reads your activities and recommends real-time, personalized fueling that fits your life and performance goals.

Ratings & Reviews

4.5

out of 5

696 Ratings

Conquered my 70.3 because of this app
10/31/2025

Rahul-488
I’m a 30‑year‑old guy who’s crossed the finish line of two half Ironmans and has learned the hard way that training your body is only half the battle—how you fuel it is everything. That’s where the Fuelin – Performance Nutrition app came in and completely changed how I eat and recover.Here’s why I’m giving it 5 stars:•After a long race weekend one weekend and a heavy bike/run brick the next, Fuelin updated my macros and meal suggestions that same day so I didn’t feel like I was guessing, under‑fueling or overdoing things.•The new Smart Meals feature has been a total game changer. I’ll glance at the suggestion and see exactly what I should eat, when, and how much—no more staring at my fridge wondering “okay, is this enough carbs for recovery?”•Logging meals is actually painless now. I talk or type what I ate, scan a barcode, or sync with whatever I already track—nutrition tracking finally works with my life, not against it.•It’s not just about race day—it gives me support for everyday training, recovery days, hard sessions, and those “just want energy and no gut issues” days.•I’ve noticed better recovery, more consistency in how I feel on training days, and fewer “why are my legs dead two days later” moments.If you’re a serious athlete (endurance, triathlon, long rides/runs) and you’re done guessing or winging your nutrition, Fuelin is by far one of the best decisions I’ve made for my performance. Highly recommend.
Conquered my 70.3 because of this app
10/31/2025

Rahul-488

I’m a 30‑year‑old guy who’s crossed the finish line of two half Ironmans and has learned the hard way that training your body is only half the battle—how you fuel it is everything. That’s where the Fuelin – Performance Nutrition app came in and completely changed how I eat and recover.Here’s why I’m giving it 5 stars:•After a long race weekend one weekend and a heavy bike/run brick the next, Fuelin updated my macros and meal suggestions that same day so I didn’t feel like I was guessing, under‑fueling or overdoing things.•The new Smart Meals feature has been a total game changer. I’ll glance at the suggestion and see exactly what I should eat, when, and how much—no more staring at my fridge wondering “okay, is this enough carbs for recovery?”•Logging meals is actually painless now. I talk or type what I ate, scan a barcode, or sync with whatever I already track—nutrition tracking finally works with my life, not against it.•It’s not just about race day—it gives me support for everyday training, recovery days, hard sessions, and those “just want energy and no gut issues” days.•I’ve noticed better recovery, more consistency in how I feel on training days, and fewer “why are my legs dead two days later” moments.If you’re a serious athlete (endurance, triathlon, long rides/runs) and you’re done guessing or winging your nutrition, Fuelin is by far one of the best decisions I’ve made for my performance. Highly recommend.
Not really ready for everyone
Jan 19

Namednick17
I’m a marathoner. I wanted to try Fuelin to see if it could help me dial in my nutrition this training block but they don’t give you any test run option (unless someone invites you with a 7 day trial). So now I’m stuck with it for a year. I’m an intuitive eater and my weight has stayed within a 3lb fluctuation for 11 years. My overall composition (muscle/fat) might change based on training but my weight is the same. Here are my issues with Fuelin: It only syncs with training peaks so if you’re not on TP, you enter your workouts manually and have to guess what zone 1-5 is. If I use what Strava is telling me, Fuelin underestimates my calories. I put in a 70 minute run that Strava said was Z2 and a 45 minutes strength session and my overall calorie recommendations for the day didn’t change. Also no option to manually add your own snacks. I emailed customer service after 5 days of trying it and got a lot of run around and a response from a dietician that just felt like someone put my concerns and questions into chatGPT. I think it’s not ready for anyone except triathletes using Training Peaks and also, it’s trying to train AI to replace real RDs.
Not really ready for everyone
Jan 19

Namednick17

I’m a marathoner. I wanted to try Fuelin to see if it could help me dial in my nutrition this training block but they don’t give you any test run option (unless someone invites you with a 7 day trial). So now I’m stuck with it for a year. I’m an intuitive eater and my weight has stayed within a 3lb fluctuation for 11 years. My overall composition (muscle/fat) might change based on training but my weight is the same. Here are my issues with Fuelin: It only syncs with training peaks so if you’re not on TP, you enter your workouts manually and have to guess what zone 1-5 is. If I use what Strava is telling me, Fuelin underestimates my calories. I put in a 70 minute run that Strava said was Z2 and a 45 minutes strength session and my overall calorie recommendations for the day didn’t change. Also no option to manually add your own snacks. I emailed customer service after 5 days of trying it and got a lot of run around and a response from a dietician that just felt like someone put my concerns and questions into chatGPT. I think it’s not ready for anyone except triathletes using Training Peaks and also, it’s trying to train AI to replace real RDs.
More than just an app
11/21/2025

dr momma c
I had a nutrition coach years ago (when I trained for an Ironman) that gave me my macros for certain times of the day. No explanation or teaching. Just “do this and if you do this training, do this”. Now getting back into triathlon training along with heavy lifting, I needed a personalized app that took my planned session from TrainingPeaks and prescribed what to eat and when. Being a scientist and an older female in my 40’s, I know nutrition and training need to match otherwise more muscle catabolism will continue at a great rate. This app and Scott Tindel and staff know this and have built this into the app. If you want to get the most from this app, listen to the podcasts, plan your workouts, and eat the prescribed macros at the given times. You will understand that this is more than just an app… it is a blueprint of how to get your engine from mediocre to premium!
More than just an app
11/21/2025

dr momma c

I had a nutrition coach years ago (when I trained for an Ironman) that gave me my macros for certain times of the day. No explanation or teaching. Just “do this and if you do this training, do this”. Now getting back into triathlon training along with heavy lifting, I needed a personalized app that took my planned session from TrainingPeaks and prescribed what to eat and when. Being a scientist and an older female in my 40’s, I know nutrition and training need to match otherwise more muscle catabolism will continue at a great rate. This app and Scott Tindel and staff know this and have built this into the app. If you want to get the most from this app, listen to the podcasts, plan your workouts, and eat the prescribed macros at the given times. You will understand that this is more than just an app… it is a blueprint of how to get your engine from mediocre to premium!
Huge benefit for my half Ironman training!
10/09/2024

Wendybc6021
Fuelin was a great app that helped me navigate my nutrition plan along with my workouts to have a successful first half Ironman! I didn’t have the budget for the one-on-one consultations but even on the low end of cost it was totally worth it: I listened to all the educational videos and as many of the live events as I could.As an older athlete (41) doing her first long distance tri, I knew the importance of getting my nutrition on point to help prevent injury, sickness and help me perform at my best. Fuelin allowed me to do that on a tight budget, and I’ll be forever grateful. I was able to plan each day effectively and my body performed well and recovered well.If I decide to do another long distance, I will definitely use Fuelin again and hopefully be able to go for the one-on-one consultation to get even more out of the program.

Developer Response
Thank you so much for sharing your experience and congratulations on completing your first half Ironman! We’re thrilled to hear that Fuelin helped you stay on track with your nutrition and training, and that the educational videos and live events added value to your journey.It’s amazing to see how you made the most of the program and achieved such a strong result on a tight budget. Stories like yours truly inspire our team and community.We’d love to support you again when you take on your next long-distance race, and we’ll be here whenever you’re ready to dive back in. Thanks again for being part of the Fuelin family and for sharing your success!
Huge benefit for my half Ironman training!
10/09/2024

Wendybc6021

Fuelin was a great app that helped me navigate my nutrition plan along with my workouts to have a successful first half Ironman! I didn’t have the budget for the one-on-one consultations but even on the low end of cost it was totally worth it: I listened to all the educational videos and as many of the live events as I could.As an older athlete (41) doing her first long distance tri, I knew the importance of getting my nutrition on point to help prevent injury, sickness and help me perform at my best. Fuelin allowed me to do that on a tight budget, and I’ll be forever grateful. I was able to plan each day effectively and my body performed well and recovered well.If I decide to do another long distance, I will definitely use Fuelin again and hopefully be able to go for the one-on-one consultation to get even more out of the program.
Developer Response 10/31/2025
Thank you so much for sharing your experience and congratulations on completing your first half Ironman! We’re thrilled to hear that Fuelin helped you stay on track with your nutrition and training, and that the educational videos and live events added value to your journey.It’s amazing to see how you made the most of the program and achieved such a strong result on a tight budget. Stories like yours truly inspire our team and community.We’d love to support you again when you take on your next long-distance race, and we’ll be here whenever you’re ready to dive back in. Thanks again for being part of the Fuelin family and for sharing your success!

Fuelin transforms the way you fuel, recover, and perform by turning smart fueling into peak health and performance. What's New • Strava integration now generally available — sync completed workouts and receive personalized fueling and nutrition recommendations • Performance Metric Settings unlocked for Recreational Athletes — ability to set bike FTP, run threshold pace, and swim threshold pace to improve accuracy • Bug fixes, performance upgrades and UI/UX improvements — faster and a smoother in-app experience

Version 2.1.12

4d ago

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Fuelin - Performance Nutrition

Sports Nutrition Coaching

Events

Ratings & Reviews

What’s New

Version 2.1.12

App Privacy

Data Used to Track You

Data Linked to You

Accessibility

Information

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