This is a tough one to answer, as most fees depend on how much you hold in your wallet and the size of your transactions – not to mention inactivity fees, withdrawal fees and general sign-up fees.u003cbru003eNarrow down potential crypto apps to 3-5, then research what the fees would look like bearing in mind the amount you'd be looking to invest, the regularity you'd be looking to deposit, and any other associated costs.