Radius High-Interest Savings is an online account exclusively for NerdWallet app users. Its APY and fees are competitive with other online accounts, and they’re much better than what you’d find at a typical brick-and-mortar bank. Read on for more about Radius High-Interest Savings. Radius High-Interest Savings Interest on balances1.55% APY Monthly feeNone Minimum opening deposit$50... Alice Holbrook is a writer at NerdWallet.