Spar is the challenge app. It lets you challenge your friends to build healthy habits in a super effective, fun, and social way. Read more books, hit the gym, learn an instrument, challenge your friends to anyt...
An online activity photo streaming platform, where users discover and share photos on time-bound topics and challenges. A new way to reply with photos that help you have fun, visual conversations and challenges...
- take a picture and choose 1 hashtag, every # is a new challenge - It has only original content, you can’t choose photos from your camera roll - no ads or trackers - Each photo + users are ranked, the o...