Google-based version now available in the UK and Canada.
In 2009, Starbucks joined the iOS app market in the US, while a UK version only arrived at the start of this year.
The coffee chain proceeded to add sweetener to its mobile arm with an Android launch last year, again only in the US, but the app is now available in the UK and Canada.
App users will have access to Starbucks Card payments, store locators, Starbucks Rewards, balance checks and more.
But seemingly, the US version is still the brand's top priority, as it updates the Android version to enable PayPal-based payments via a connected in-app barcode – similar to the iOS and BlackBerry versions.
The app has also been given PIN code protection, a function normally applied by mobile wallet users making larger purchases, and a Starbucks Rewards history.
Adam Brotman, chief digital officer, Starbucks, said: "The expansion of our mobile payment footprint to two of our most important markets is a strong milestone for us, but more importantly, it extends the number of customers who now have a faster and easier way to pay at Starbucks.
"We are thrilled to extend mobile payment capabilities to Android smartphones in the UK and Canada and enhance the experience in the US."
Starbucks mobile payments can now be used at almost 14,000 locations globally.