What if an app could give you insights into your fitness? Tell you if your training is producing results? Make advanced concepts like zone training accessible to everyone?
Those were my goals when I started building Helium - an endurance training app for everyone on iOS and Apple Watch.
I took Helium from concept to App Store as a solo indie project, executing all of: user research, marketing, design and coding myself.
Helium was featured by the App Store editorial team in 2021.
More details here: http://www.helium.fit