As simple as possible and complex as possible.
Green; can be used because many sports have a tendency of being played outside on grass and nature. For example soccer, is a big part of the app and the color green associate with the color of the soccer field.
Red; can be used because it reminds people of sports and competition.
Maybe, orange can be used because it is energetic.
Our Ideas and Additional Information:
The logo will be a logo for an app. It must be catchy, vibrant, gathering, social, necessary, sportive, unique, big, global, old and new, 7 to 70, intriguing. The logo should have a catchy image that will be the image of the app (for example; Snapchat's ghost icon). It can include basketballs or soccer balls or soccer or basketball fields to remind people of the purpose of the app (people getting together and playing sports). It should be creative and catchy and reminding people of joy, health, fun.. The app consists of pilates, football, soccer, basketball, tennis and pingpong. Our logo must be simple, but have complex features.
The features of our app includes finding sports fields nearby, inviting random users to play sports together with and create teams and find matches. So our logo must be dynamic.