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Title Screen
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Map
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Progress
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Post-workout analysis
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Shop
Inspiration
What it does
Inspiration
We started out brainstorming gamification and kept landing on the same idea: working out is hard, playing sports is easy, and playing games is even easier.
As we built, we realized the thing tying all three together is competition. People will push themselves surprisingly hard just to beat someone else. So we asked: what if staying healthy felt like that? What if people were driven to out-rep their friends the same way they try to out-score them in a game?
Why it matters
Physical inactivity is one of the biggest health problems in the world:
- Nearly 1 in 3 adults worldwide (about 1.8 billion people) don't get enough physical activity.
- Inactivity raises the risk of heart disease, type 2 diabetes, stroke, depression, and several cancers.
- The WHO estimates 4–5 million deaths a year could be prevented if people were more active.
Why people stop
The problem usually isn't knowing how to work out. It's keeping at it.
- Motivation fades. A lot of people who start a new fitness routine drop it within the first few months.
- Working out alone is boring. There's no one to hold you accountable and no immediate reward.
- Progress is slow. Results take weeks to show, so it's easy to feel like nothing is happening.
Games solve all three with rivals, instant feedback, and rewards. NextRep brings that loop to fitness.
How we built it
Challenges we ran into
Our biggest technical challenge was getting accurate readings from our AI agent on what counts as a good push-up. Rather than simply counting movement, we wanted the computer vision system to recognize proper form and determine whether a rep was actually completed correctly.
We also initially started with native iOS and Android applications. Since the two platforms had different dependencies, we had to maintain separate versions, which led to platform-specific bugs and slowed down development. We eventually migrated to a progressive web application, which allowed us to share more of our codebase and iterate much faster.
Accomplishments that we're proud of
We’re especially proud of our computer vision and live AI coaching. Getting the AI to recognize exercise movements and provide feedback in real time was one of the most challenging parts of the project.
We’re also proud of our real-time location features, which use live location data to create a map where users can see and interact with other students nearby. This turns individual workouts into a more social and competitive experience.
What we learned
What's next for NextRep: Multiplayer Workouts
Our next step is making NextRep more social with multiplayer workout battles. We want friends to be able to create teams and compete against other teams in workout challenges.
We also want to add different types of goals beyond simply getting the most reps, such as beating a personal record, maintaining consistency, completing workout streaks, and achieving other fitness milestones. This would allow different types of users, including athletes and people focused on building healthy habits, to compete in ways that fit their goals.
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