Challngr
Let’s push each other, together!
A fitness app built around competition, accountability, and actually showing up.ABOUT
I am an actively social person. Last summer I went to San Francisco with the sole purpose of meeting new people. Not for networking, not for work, but instead just to find people to go to the beach with.
But I wasn’t always like this. For most of my life I’ve been pretty introverted. But now, getting close to the end of college, I can actually see the shift. I’m more social, more open, more willing to put myself out there. And a lot of people I know feel the same way. Something changes.
But when was the shift? What made me more socially active. I think I can actually trace it back straight to highschool. At the Westford Academy Public School system, I joined their crew team and I rowed for four years straight, 4 hours after school every day, 6 days a week.
There is a massively unique culture on that team, something spiritual and rugged but not frat-like. The team took people in from all different backgrounds, all different bodytypes and athleticism levels. There was no single-channel atmosphere besides the fact that we all grew as a family.
THE PROBLEM
At the same time, I’ve always felt a disconnect between what I’m doing and what I want to be doing. I’m not a lazy person, but I still find myself falling short of my own expectations. Working out is a good example. I know I want to go. I know I’ll feel better after. But that doesn’t always matter in the moment. When I was on the rowing team, I had a duty to show up and I was held accountable.
Most fitness apps assume motivation is internal, like you either have it or you don’t. But that’s not really how it works.
The only times I’ve been truly consistent are when someone else is involved. When there’s pressure. When there’s something at stake, even if it’s small. Right now, most fitness apps treat progress as something private. Quiet. Individual.
But staying consistent has never felt like a solo thing.
THE IDEA
What if working out felt more like a shared experience? It’s not a social feed. We aren’t posting workouts on here. No thirst traps and no ego monuments. This app is something so more direct and so much more human.
It’s system where you can challenge your friends, track progress in real time, and actually feel the difference when someone is ahead of you.
Something simple:
You vs someone else with a clear goal and a short window.
But in actuality? It is us working for ourselves.
No ambiguity.
THE PRODUCT
Challngr is built around direct challenges between people.
You can:
- challenge a friend to a step goal, workout count, or custom target
- see live progress as the challenge unfolds
- get notified when someone passes you
- finish with a clear winner
It’s less about tracking and more about momentum.
Short challenges keep things from feeling overwhelming.
Real-time updates create pressure.
Private challenges keep it low stakes.
The goal isn’t to redesign fitness.
It’s to make showing up easier.
OUTCOME & REFLECTION
This project started as a small feature added onto an existing fitness app.
But the more I worked on it, the more it felt like something bigger.
Not because it’s complex, but because it focuses on one thing:
motivation through other people.
There’s still a lot to explore. Different types of challenges, balancing skill levels, making it feel fair.
But even in its current state, it answers something I’ve felt for a long time:
I don’t need more information.
I need a reason to actually do the thing.