Acorns referral code page! Share and enjoy Acorns referral codes right here - it's completely free. Acorns automatically invests your spare change. Acorn is a mobile-first investment platform designed to help people, especially first-time investors, get started in investing with small automated investments into a portfolio of exchange-traded funds, or ETFs, that the company selects and balances. Make sure to share your Acorns referral code after joining in your free referral page.