How Gravl was built
Julian describes building Gravl, a strength-training app, after finding shortcomings in existing workout recommendations. The interview covers the MVP, a Reddit launch, Spanish localization, paid acquisition, and the costs behind running the business.
What to take into your own app
Improve the core job
The difficult work was making workout recommendations useful across different equipment, goals, and training routines.
Use early distribution to learn
Julian describes Reddit bringing early users, bug reports, and feature requests before the team expanded its paid strategy.
Separate validation from scaling
His advice is to establish willingness to pay before spending heavily on acquisition. His experience in Spanish-speaking markets is a case to examine, not a guaranteed cheaper channel.
A small experiment to try
Write down one concrete weakness in the tools your target users already use. Test an improvement with a small relevant community, then track paid conversion before expanding acquisition.