Back in August, we brought you news on Acorns, a new iPhone app that wants to help you get rich through micro-investing your spare change. And on Wednesday, it’s now available for Android too. Unfortunately, the app remains a US-only affair. But as with the iPhone incarnation, Acorns for Android connects up with your credit or debit card and links in with any purchase you make. Acorns can ’round up’ to the nearest dollar and invest this for you automatically, or enable you to do it manually. Let’s say you buy groceries for $12.53, Acorns can make this an even $13, with $0.47 going into a “diversified portfolio of index funds,” offered by the likes of Blackrock, Vanguard and PIMCO. Acorns claims more than 60,000 iPhone users have opened micro-investment accounts since the app launched in August.