Play. Learn. Progress.
Day after day. Season after season.
Tonsser builds apps for young athletes to record their games and training, reflect on how they played and set goals for what to improve next.
Grinta
for football
You’re at it every week. But how do you see what’s improving and decide what to work on next? Grinta helps you talk through every game and practice, keep track of your season and turn insights into actions for the next session.


Something new
for basketball
Hoopers, you’re next. We’re building something new for you. More soon.

What we believe

Athlete first.
We build around the young athlete: their goals, their experiences and their progress. Their needs shape every product decision.

A companion, not a coach.
The coach plays a central role in every team. Our apps help players reflect, stay engaged and make more of what they learn with their coach.

Grounded in trusted methods.
Our content and recommendations draw on established sports methodologies and development curricula, giving players a sound foundation to build on.

Keep it fun.
Sport should be something young people want to keep coming back to. We help make the everyday experience rewarding, so enjoyment grows into a lasting love of the game.
Our story
For around a decade, Tonsser has helped pioneer a different approach to youth sports: building technology around the athlete. We started in football, giving young players a place to record their performances, share their progress and tell their own story.
That experience shaped what we’re building today. With Grinta, we’re moving beyond recording what happened to helping players reflect, learn and decide what comes next. And with basketball on the horizon, we’re bringing that same athlete-first belief to another sport.
The ambition has stayed the same: give young athletes tools that support their own development, season after season.
