We recommend using WhatsApp to communicate with your team:

1) It's free

2) It can accommodate iPhone and Android users

3) It can accommodate more users than SMS group chat or iMessage

4) Members can easily enter or leave the messaging group with out having to recreate the group every time

5) Use it to post your workout time & location. Ask your team members to give a "thumbs up" to your workout time & location so the leader knows how many people to expect

6) Members can create a profile

7) Leaders can attached polls & locations