McRun vs Fuelin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
McRun
Calculate your running potential across various distances using your best race time. Get personalized training paces for different workout types and discover motivational tips to optimize your performance. This tool helps you target and train for peak running achievements.
- Calculate equivalent race times
- Suggest optimal training paces
- Target peak performance
- Motivational quotes and tips
- Supports distances from 100 yards to 100 miles
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** Runner's World selected McRun "Must Have Running Apps - Top Tool" McRun is the official app version of the well-known McMillan Running Calculator. Created by internationally recognized coach Greg McMillan, this calculator allows you to compute your running potential across different distances. You only need to input your best time from one distance and McRun does the rest. The app will tell you how fast you are capable of running from 100 yards to 100 miles. It also suggests optimal training paces based on both your fitness level and the type of runner you are. McRun is a great way to target and train for peak performance. Feedback? Suggestions? Sore legs? Send us an email: peter@freestylestudios.com Quick start guide: - From Calculator screen enter your best time in any distance and press “calculate” - View your equivalent race times - Press “Workout Paces” to see recommended paces for tempo runs, long runs, easy runs, and speed workouts - Select “Recalculate” to return to the Calculator screen - Turn your iPhone sideways to see motivational quotes and training tips
Fuelin
This app provides personalized nutrition coaching for athletes and active individuals. It creates daily meal plans that adapt to your training, goals, and preferences, offering smart meal recommendations and simple food logging. It also includes tools for hydration tracking and gut training, along with educational content to build lasting healthy habits.
- Adaptive daily nutrition plans
- Personalized meal recommendations
- AI-powered food logging
- Hydration and gut training tools
- In-app nutrition lessons
- Syncs with fitness trackers
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Fuelin is a personalized sports nutrition and fueling app for runners, cyclists, triathletes, hybrid athletes, and anyone who trains. It tells you what, when, and how much to eat: your daily calorie, carbohydrate, protein, and fat targets adapt to your workouts and goals, so you can fuel training, recover well, and manage body composition. Fully automated, no math required. Fuelin is trusted by 100K+ athletes. WHO IT'S FOR Whether your goal is everyday fitness, weight loss, muscle gain, HYROX, a marathon, or IRONMAN, Fuelin plans your nutrition. Supports 30+ sports and activities, from swimming to CrossFit. NUTRITION THAT ADAPTS TO YOUR TRAINING • Daily nutrition planning: calorie and macro targets adapt to planned and completed workouts, so hard days get more fuel and rest days less. • Smart Meals: personalized meal and portion recommendations based on your goals, training, and preferences. • Smart Adjustments: upcoming meal targets rebalance based on what you've already eaten. • Workout and race fueling: guidance on what to eat and drink before, during, and after runs, rides, and hard sessions, plus Race Week coach insights. • Body composition: lose weight or build muscle while still fueling your workouts. • Simple food logging: talk or type to the AI food logger, scan a barcode, save recipes and meals, and log in units like scoops or slices. PERSONALIZED TO YOU Fuelin builds your plan around your goal, body weight, gender, athlete experience level, and daily activity level. It estimates your resting metabolic rate (RMR), functional threshold power (FTP), and threshold pace, or you can enter your own. BUILT WITH SPORTS NUTRITION EXPERTS Created by sports dietitians, including co-founder Scott Tindal (20+ years in pro sport) and Dr. Alan McCubbin (researcher, 20 years with endurance athletes). IRONMAN World Champions Jan Frodeno and Daniela Ryf are on the team. WORKOUT INTEGRATIONS Connect Garmin, Strava, TrainingPeaks, V.O2, Pushing Limits, Final Surge, HumanGO, TriDot, or RunDot. You can also add workouts manually. HYDRATION, GUT TRAINING & MORE • Sweat Rate Tracker: measure sweat rate to guide hydration. • Carb Capacity Testing: gut training for endurance exercise. • In-app lessons on portions, supplements, and energy balance. • Community chat with Fuelin athletes. • Fuel Shop: member perks from Maurten, Momentous, and other partners. COMMON QUESTIONS How is Fuelin different from a calorie tracker? Calorie trackers count what you eat against a target. Fuelin sets that target from your workouts and goals, recommends meals and portions, and rebalances upcoming meal targets around what you've eaten. Do I need to be training for a race? No. Fuelin supports everyday training and rest days, whether your goal is more energy, weight loss, muscle gain, or an event. Can I use MyFitnessPal or Lose It!? Nutrition data from MyFitnessPal or Lose It! can sync to Fuelin through Apple Health. Does Fuelin include a human coach? Autopilot, Fuelin's core plan, is fully automated and doesn't include a coach. Copilot adds 1:1 messaging with a Fuelin nutrition coach and live group coaching every two weeks. WHAT ATHLETES SAY "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 Champion PLANS Fuelin requires a paid subscription. Autopilot: automated nutrition planning, Smart Meals, Smart Adjustments, food logging, workout syncing, hydration and gut-training tools, lessons, and community chat. Copilot: everything in Autopilot plus 1:1 coach messaging and live group coaching every two weeks. 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
Screenshots
Verdict
The clearest difference is price: Fuelin at Free against McRun's $4.99. Fuelin also leads on update cadence (every 10 days vs every 3 months) and rating (4.5 vs 4.3). McRun's advantage is in-app purchases (none vs 8) and ads (none vs shown). On device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Fuelin is free to download; McRun costs $4.99 up front. Fuelin sells 7 in-app purchases, starting at $29.00 per month. McRun asks for nothing beyond the download.
Fuelin holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Fuelin has 1.3K ratings behind it against 146, so its average is the more settled of the two. Written reviews complicate that: 60% of McRun's written reviews are positive against 51% of Fuelin's, so the app with the better star average is not the one people write more warmly about.
McRun ships an update every 3 months, Fuelin every 10 days. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.
| Parameter | McRun | Fuelin |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.3 (146 ratings) | 4.5 (1.3K ratings) — better |
| Positive reviews | 59.6% of reviews — better | 50.8% of reviews |
| Number of ratings | 146 | 1.3K — better |
| Update frequency | Every 3 months | Every 10 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 7.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 12 MB | 144 MB |
| Age rating | 4+ | 17+ |
| Developer | john abraham | Thrive AI Labs |
Customer experience
McRun
Fuelin
Bugs and requests
McRun
Reported bugs
7 issues- App crashes immediately upon opening
- Crashes on iPhone 6, iPhone XS Max, iPhone 5s, iPad Pro
- Incompatible with iOS 8.3, iOS 9.1, iOS 10
- App closes itself within 3-6 seconds of launch
- Crashes after recent iOS updates
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- Inconsistent pace calculations vs website version
- App won't stay open for extended use
Requested features
9 requests- Display vLT and vVO2 data like website
- Add 600m distance to speed paces
- Include VO2 max calculation function
- Show pace for different race distances
- Add workout descriptions and explanations
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- Customize distance options
- Provide km/mile pace conversions for treadmill
- Support goal-based training (not just race-based)
- Include training plan integration
Fuelin
Not enough reviews yet to summarise bugs or requests.
In-app purchases
McRun
No in-app purchases
Fuelin
- Fuelin Performance Nutrition$29.001 Month
- Autopilot Monthly Plan$29.001 Month
- Copilot Monthly (New Users)$99.001 Month
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- Copilot Monthly$99.001 Month
- Autopilot Yearly Plan$139.001 Year
- Autopilot Yearly7 Days trial$139.001 Year
- Copilot Yearly2 variants$399.001 Year








