As mentioned above, BBB ratings don't guarantee that an investment app or any other company will meet or exceed your expectations. The bureau's ratings primarily evaluate a company's complaint history and customer interaction track record. Therefore, it's important that you take time to do additional research about prospective investment apps. The BBB's findings can be helpful in determining whether an investment app is trustworthy, but also consider things like fee transparency and whether it's registered with the US Securities and Exchange Commission (SEC) and Financial Industry Regulatory Authority (FINRA).