MetaMask is a plug-in type (no client download required) lightweight digital currency wallet. Of course, there is also an app now, which needs to be downloaded from the Google App Store. It is mainly used for Chrome and Firefox. The iconic logo is a little fox head, which is very recognizable. MetaMask does not store the user's wallet data. All private keys are held and kept by the user himself, which is very safe. In addition, it is highly compatible with Ethereum smart contracts and Dapps, which makes it very popular among the developer community and senior users.
