Helium: Endurance trainer 4+

For runners of all levels


    • 4.6 • 82 Ratings
    • Free
    • Offers In-App Purchases


Endurance training for runners of all levels. From Couch-5K to advanced marathoner, Helium has all the tools you need to get fit faster by training smarter.

Unlike other basic run trackers, Helium was built from the ground up to make endurance training easy and fun at every point in the training lifecycle - from planning to execution to analysis.

Helium automatically learns each runner's individual Effort Zones and matches them to a training plan appropriate for their fitness level. Plans such as couch to 3k, 10k, half-marathon, and more are available directly in the app. Workouts are then scheduled according to each user’s personal calendar for maximum accountability.

Helium's Ambient Pacing Assistant on Apple Watch makes it easy to execute even the most complex interval workouts without distracting the runner's focus. The Assistant’s customizable visual, haptic, and audio feedback from Apple Watch helps runners stay in the appropriate Effort Zones prescribed by their training plan.

After a workout, Helium's metrics dashboard makes it easy to see fitness progress with Cardio Efficiency and Strain measurements. Runners can watch as their cardiovascular endurance improves steadily over time, thanks to the proven effectiveness of zone-based interval training.

Helium takes the guesswork and pain out of endurance training and makes running fun again. Run smarter with Helium.

Helium integrates with the Health app to analyze your past workouts and save new workouts.

Helium is available in the App Store and is $59.99/year with a 14-day free trial.


What’s New

Version 2022.12.01

Changes to subscription paywall messaging

Ratings and Reviews

4.6 out of 5
82 Ratings

82 Ratings


Intuitive, smart, motivating

I've been using the Helium app for about 5 weeks and am a big fan. I've been running for years now but have not found an easily accessible and fun way to truly measure and improve my performance. The Helium app is already showing results for me. I like the approach of having different plans based on different goals and then having a schedule that motivates me to go out and improve. I love the fact that this app comes from a single developer who did the research and whose app beats the socks off of apps from huge corporations.

Developer Response ,

😍 thanks so much for writing a review! Don't hesitate to reach out with any feedback or suggestions. I love hearing from folks using the app!

Murisaki ,

Heart Rate App that is simple to use

I’ve been using this app for 8 months. Likes: 1. Ability to adjust the green zone on the iPhone or Apple Watch easily. 2. Phone will sync with watch so I can put my phone on the treadmill and don’t have to keep looking at my watch to see how close I am to the red zone. 3. Haptics on Apple Watch watch to let you know when you need to get into the green zone (either from the low zone or in the red zone). All of this is part of the free app.

I ended up purchasing the sub for the graphs to support the developer because I really enjoy the simplicity of this app.

KatyDol ,

Amazing app!

When I first found Helium, it was a bit like magic to me. I’ve never seen a running app that is so well-suited for endurance training; the in-run heart rate zone reminders are seamless and really keep you on track in a way that no other app can. Plus, the app is so simple and focuses on only what it needs to without cluttering with other stuff - no weird social sharing like Strava, no aggressive product placement like Nike, etc. Helium is by far my favorite running app!

App Privacy

The developer, Helium.fit, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Health & Fitness
  • Purchases
  • Location
  • Contact Info
  • User Content
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

You Might Also Like

Health & Fitness
Health & Fitness
Health & Fitness
Health & Fitness
Health & Fitness
Health & Fitness