From their app page;
*This application is only available in US Play Store. We only support US based users*
Folks, Here’s Your Free Bitcoin! Coin Spinner gives you CONSISTENT earnings from day one! You only need a Coinbase account so we can send you bitcoins without having to pay a transaction fee of 50,000 satoshi. Coinbase is the #1 bitcoin wallet in the world. There’s no scamming here There’ll be a registration link inside the app, and it only takes 5 minutes to setup, and yes, it’s 100% free.
Fast & Real payout! via Coinbase You get some bitcoins INSTANTLY after literally 5 seconds of your first use. You can request payout any time. However, to prevent spams we only allow one payout per 3 days.
Never runs out of Energy You always have an option of watching a video or completing simple tasks to replenish the energy.