Verdict
The default Ethereum wallet by an enormous margin, with the compatibility that comes from being the assumption every dApp is built against. It is a hot wallet with a browser attack surface, and its built-in swap charges roughly 0.875%.
- Best for
- EVM dApp access and everyday on-chain activity
- Cost
- Free; ~0.875% fee on in-wallet swaps
What works
- Works with essentially every EVM dApp without configuration
- Snaps extend it to non-EVM chains without replacing the wallet
- Hardware wallet integration is well implemented and widely supported
- Open source with a long public audit and bug-bounty history
What does not
- In-wallet swaps carry a fee around 0.875% on top of the route
- Keys live in browser storage — it is a hot wallet whatever else it is
- Default RPC routes traffic through a single provider
- Transaction previews are weaker than newer competitors'
Almost every EVM application you will ever use was tested against MetaMask first. That is the product. Compatibility is not glamorous, but when a wallet is the reference implementation every developer builds against, it stops mattering very much whether a competitor has a nicer interface.
What it costs
The wallet is free. The swap feature is not: MetaMask adds a fee of roughly 0.875% on top of whatever route it finds.
On a $5,000 swap, that is about $44 — several times the pool fee, and considerably more than the gas on any L2. Going to an aggregator directly with the same wallet gets you the same underlying route without the markup. The convenience is worth something; it is not worth 0.875%, and the gap is larger than most of the fee comparisons people make between exchanges.
The security model, stated plainly
MetaMask holds your private key in browser storage, encrypted with your password. That is a hot wallet. It is exposed to malicious browser extensions, to a compromised browser profile, and to malware running on the machine.
This is not a criticism of the implementation, which is solid and has been audited extensively. It is a description of what a browser wallet is. The mitigation is well supported: pair a hardware wallet, and MetaMask becomes a competent interface to keys that are not in the browser at all.
A browser wallet is where you keep the money you are using this week. Anything you would be upset to lose belongs behind a device that has to be physically touched.
Snaps
Snaps let third parties extend MetaMask to non-EVM chains and add functionality — Bitcoin, Solana and Cosmos support without installing a second wallet. Well implemented, and a real answer to the multichain problem that does not require abandoning the compatibility advantage.
A Snap is third-party code running with wallet permissions. Install them from sources you have specific reason to trust, and treat the permission prompt as meaningful information rather than an obstacle between you and the feature.
Privacy
By default, RPC traffic routes through a single infrastructure provider, which means one party can associate your addresses with your IP address and with each other. Changing the RPC endpoint in settings — to your own node or a different provider — takes two minutes and is worth doing before you start using the wallet seriously.
The institutional and developer side
MetaMask's other role is as a developer tool. It is the reference wallet in tutorials, the default in testing environments, and the thing an integration is verified against before release. That is why compatibility is so complete, and it is also why the wallet changes slowly — a breaking change here breaks a large fraction of the ecosystem at once.
For a user, the practical benefit is that obscure dApps and older contracts will work. The cost is that features other wallets shipped years ago arrive here late, because shipping them carefully matters more when everything is built against you.
Where competitors have passed it
Transaction simulation: Rabby shows expected balance changes before you sign. MetaMask's previews are improving and still behind.
Approval management: still a separate tool for most users rather than a first-class wallet feature.
Chain switching: competitors detect the correct network automatically; MetaMask still often asks, and the prompt trains users to click through dialogs.
Verdict
Multiple accounts, one seed
MetaMask derives many addresses from a single seed phrase, which people use as a separation strategy: a hot account for unfamiliar sites, a main account for everything else.
It is better than nothing and weaker than it feels. The addresses are unlinkable on-chain, but they all come from the same seed — a compromise of the wallet compromises all of them simultaneously. Real separation requires a different seed on a different device, or a hardware wallet for the balances that matter.
The setup we would actually recommend
Install MetaMask and pair a hardware wallet for the account holding meaningful value.
Keep a separate software-only account, funded with what you can afford to lose, for connecting to anything new.
Change the default RPC endpoint in settings.
Bookmark an approval-revocation tool and use it quarterly, or switch to a wallet that does this in-app.
Swap through an aggregator, not through the wallet's swap button.
Done that way, MetaMask's compatibility advantage costs you nothing and its weaknesses are mitigated. That is the honest recommendation: not the best wallet, and the one everything works with.
Score: 7.2. The most compatible wallet in existence, with a swap fee that punishes convenience and a security model that is fine as long as you understand exactly what it is. Install it, pair hardware, and swap somewhere else.