In addition, we see MetaMask swap features that work as aggregators and compare rates from liquidity pools including popular ones such as Uniswap, 1Inch, ParaSwap, and many others. There are some downsides also of MetaMask wallet such as it doesn’t support Bitcoin, you will have to add other supported networks manually. The MetaMask sign-in uses third parties to process the fiat money which is a big downfall of this amazing platform. However, MetaMask doesn’t charge account maintenance fees from the users which helps them to end up with more profit. All this thing makes MetaMask the best choice for every crypto investor.