The BitPay wallet app is an officially-supported BitPay distribution of the Copay project. By providing the BitPay wallet app, we're able to more tightly integrate BitPay-powered services into the wallet experience while still allowing the Copay project to remain true to its open source nature.
What's in the future for Copay and the BitPay wallet app?
We'll continue to release Copay for all platforms, and the Copay project will continue to be the primary "development head" for the BitPay wallet app. We're excited to continue developing Copay to be the world's most powerful and open bitcoin wallet platform, while making the BitPay app the best way to secure, spend, and manage your bitcoin.
How is the BitPay wallet app different from Copay?
At BitPay, we've made the decision to keep Copay a pure wallet and remove any functionality not related to sending, receiving, or storing assets. As a result of this, we removed functionality to buy Gift Cards in the Copay app. The BitPay wallet still has full gift card support. You can download the most recent version of BitPay wallet from the app store of your choice.
Prior to the removal of gift cards from Copay, the primary difference between BitPay and Copay was the BitPay app's integration with the BitPay Card. The BitPay Card is a prepaid Visa debit card which you can securely pair, manage, and load through the BitPay app. For people living on bitcoin, this makes the BitPay wallet app a great interface for managing both traditional finances and bitcoin spending/savings wallets.
For more information on why we launched the BitPay app, check out the announcement blog post.