Explore
Challenges
For Business
For Startups
Who We Are
Results
Get Started
Launch a challenge
Connect with talented problem solvers
Solve a challenge
Join our community and win prizes
Log In
menu
log in
Explore Challenges
For Business
For Startups
Who We Are
Results
share
Follow
Following
Unfollow
message
Toshiya Maki
Minamiaoyama, Tokyo Prefecture, Japan
more
About
Challenges
Following
Activity
Awards
Awards
About
Challenges
Following
Activity
Awards
Badges
1 Year as a User
Category Added to Profile
Followed a Challenge
Submitted to Challenge
