Robinhood

Robinhood's Card Round Ups feature takes your spare change from everyday purchases and invests it in fractional shares of stocks, ETFs, or Bitcoin. Every transaction you make rounds up and the change flows into your investment account, giving your savings exposure to market growth rather than keeping cash idle. The fractional share structure means round-ups buy actual pieces of assets without minimum investment amounts.

This fits investors who want to save and invest simultaneously without thinking about it. Instead of round-ups sitting in a savings account, your spare change goes directly to work in the market. The approach works well for long-term investors who can tolerate market fluctuations and want their small, frequent savings to compound in investments rather than a low-yield savings rate.