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Meet the people
building Diby.

We’re building Diby to help coaches spend more of their week coaching and support clients as their training develops.

Our story

Diby was built by and with fitness coaches who were tired of running their business across spreadsheets, DMs, and a stack of disconnected tools. We saw great coaches capped not by their coaching, but by the admin around it.

So we set out to build one simple system that handles clients, programs, progress, and payments — so coaches can focus on coaching and grow without hiring a team.

The team behind Diby

Stjepan Buljat

Stjepan Buljat

Co-founder & CEO

  • Ex-Cognism: Co-founder & CTO.
  • Experience: Scaled technology from $0 to $80M+ ARR.
  • Focus: Enterprise velocity & systems.
Mario Vidović

Mario Vidović

Co-founder & CTO

  • Ex-Kodelab: Founder & CEO.
  • Experience: Bootstrapped agency to €2.5M+ revenue.
  • Focus: Shipping complex products.
Lucas Neves

Lucas Neves

Co-founder & CPO

  • Ex-Synthex: Head of Product Design.
  • Experience: Designed products used by 60M+ users.
  • Focus: Humanizing complex AI interfaces.

Try Diby with your clients.

Create a free account and get started with up to 5 clients.

Start your next workout with Diby.

Download the app to follow a plan or build your own workouts. Keep your training history ready for the next session.

Diby Calendar, Home and client profile on three iPhones at 10:25