Haven't taken it out for a spin yet, but I love this concept and the app is really well designed. Because they nailed the music component, I can see myself using this over other fitness tracking apps with broader feature sets.
Mattias Stanghed here, Founder and Pacesetter at Spring - thrilled to see us trending here on Product Hunt. If anyone has questions or feedback - let me know. Nothing I like more. Well running maybe ;-). Ryan Jones - thanks for the kind words - as I am sure you know, it takes a loot of work to make things look simple.
Spring Moves for Apple Watch