After launching iOS developer tools in March, eBay's (NASDAQ:EBAY) PayPal has unveiled more tools to help Android developers accept both PayPal and credit card payments on mobile.

Available Wednesday, the Android SDK is a "native mobile payments solution," meaning it's built specifically for Android users. The company believes the tool will help Android apps integrate mobile payments "simply and seamlessly."

The SDK ensures that customers don't leave the developer's app to pay and PayPal's technology lets customers pay securely with PayPal, credit, or debit so that developers needn't worry so much about fraud.

Connecting more than 128 million account holders across 50 financial networks in 190 markets and in 25 currencies, PayPal says its SDK is a payment solution that "scales with [developers] as they grow." The PayPal SDK for Android supports versions 2.2 and above, and will be available for U.S. developers on May 15.