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Darwin: Adaptive Training

Darwin: Adaptive Training

Triathlon & Marathon Plans

3 ratings
1 review
💪 Health & Fitness
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Details

  • Released
  • Updated
  • August 26, 2026
  • September 11, 2026

Features

Developer

Darwin Endurance LLC
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About

This app creates personalized weekly training plans for endurance athletes, adapting to your actual performance, sleep, and well-being. It rebuilds your schedule each week, offering clear explanations for adjustments and incorporating race-specific training and fueling targets.

✓Weekly plan rebuilding
✓Adaptive volume and intensity
✓Race-specific session shaping
✓Carbohydrate fueling targets
✓Readiness tracking from health data
✓Plain-language explanations
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What's New in Darwin

1.0.7

September 11, 2026

New landing page preview for training plans as part of onboarding experience.

Subscription plans

Darwin

Adaptive training, fueling and recovery for your race.

$9.991 Month
7 Days trial
How to cancel Darwin subscription ⁉️

User reviews

Most RecentHighest RatedLowest Rated

Exactly what I needed!

I absolutely love this app! I’ve tried other training apps and this is by far my favorite. It keeps me accountable and on track, but what really sets it apart is how it adapts when life happens (pun intended 😂).

As a busy mom, sometimes I don’t get the best sleep, I miss a workout, or my week just doesn’t go as planned. I love that Darwin adjusts my training based on what I actually did and keeps moving me forward instead of making me feel like I’m behind (g***** cough cough). It’s so nice to see those changes happen in real time and know my plan is still personalized to me.

I’m currently training for a half marathon and this has made following a training plan so much easier. I actually look forward to checking the app and seeing what’s next based on my day/week. Highly recommend!
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FAQ

Does Darwin have ads?

Darwin is ad-free, allowing for an uninterrupted training experience. The app focuses on providing a clean interface for managing your training plans and health data.

What races can Darwin plan for?

Darwin supports a variety of endurance races including Ironman, 70.3, Olympic, sprint, marathon, and half marathon events. It also tailors sessions based on specific course profiles, such as hilly bike legs or hot race conditions.

How does Darwin use my health data?

With your permission, Darwin integrates with Apple Health to read sleep, resting heart rate, and heart rate variability. This data is used to factor into your weekly plan rebuilds, providing a more accurate readiness assessment.

What are the subscription options for Darwin?

Darwin offers two subscription plans: $9.99 per month and $79.99 per year. Both plans include a 7-day free trial, allowing you to experience the adaptive training features before committing.

How often is Darwin updated?

The latest version of Darwin is 1.0.2, which was last updated on September 1, 2026. Updates typically focus on refining the deterministic engine and improving user experience based on feedback.

Can Darwin help with nutrition?

Yes, Darwin provides carbohydrate targets per hour for every long session and tags each day with a low, medium, or high carb recommendation based on your training load. This integrates fueling directly into your training plan.

What is the age rating for Darwin?

Darwin has an age rating of 4+, making it suitable for a wide range of users. The app's focus is on adult endurance training and does not contain age-inappropriate content.

How does Darwin's training engine work?

Darwin uses a deterministic engine, not a chatbot, to make training load decisions. It adheres to strict limits, such as a 10% week-over-week volume ramp, a recovery week every fourth week at 65% load, and a minimum load of 60% after a bad week.