This new app harnesses your small change and puts it to better use.

Call it progress or just laziness—apps are popping up that harness our small change and put it to better use. Acorns, dubbed “the Tinder of investing,” links to a user’s debit or credit card and rounds up to the nearest dollar on every purchase. The app then takes that spare change and invests it in a portfolio of the user’s choice—portfolios range from low to high risk (and reward). Or users can opt to let Acorns choose for them based on their age, goals, income and other factors. Meanwhile, apps like Qapital and Digit facilitate regular small transfers from checking to savings, and banks themselves are getting on the incremental savings bandwagon. (See: Bank of America’s Keep the Change and Wells Fargo’s Way2Save.)

Penny for London in the U.K. allows people to donate 1p to a children’s charity every time they ride local transit or shop at a participating store. And One Today in the U.S. shows users a different nonprofit each day, encouraging them to donate a dollar a day through Google Wallet. Then there are Charity Miles, Check-in for Good and Johnson & Johnson’s Donate a Photo, which facilitate small, periodic donations from sponsors to nonprofits on behalf of their users.

We spotted this growing practice in The Future 100, noting that mobile tools are marrying Millennials’ fiscal conservatism with their desire to do good and build their futures. Watch for more incremental savings and donations as companies make it easier than ever to set aside spare change.

Image credit: Acorns