Best Self-Custody Wallets · Rank 03 of 8

MetaMask review

Maximum dapp compatibility

Last verified August 14, 20264 scored axes

Score8.7

Documented, with gaps

The short answer

MetaMask scores 8.7 out of 10 and ranks #3 of 8 in the best self-custody wallets table, strongest on coverage (9.4) and weakest on key handling (8.4).

The wallet every dapp tests against, which makes it the safest choice for compatibility even when it is not the safest choice for signing. Recent simulation and warning features have narrowed the gap with Rabby without closing it.

Key facts on record

Launched: 2016
Type: Browser extension and mobile
Source: Open, with proprietary components

What the record shows

4 axes, weighted as published in the table’s methodology. Each score below is read from the fact printed under it.

MetaMask on signing clarity

8.4/ 35% of the score

Shows a transaction preview with simulation on supported networks, flags some malicious contracts, and allows an unlimited approval to be edited down before signing.

MetaMask on key handling

8.4/ 25% of the score

Keys are held locally, encrypted with the user's password, with optional cloud backup of the vault; broad hardware-wallet support.

MetaMask on openness

8.8/ 20% of the score

The core client is published under an open licence, with proprietary components elsewhere in the product.

MetaMask on coverage

9.4/ 20% of the score

Every EVM dapp is tested against it and Snaps extend it beyond EVM; in-app swaps carry a disclosed wallet fee on top of routing.

Quick answers

What is MetaMask best for?: Maximum dapp compatibility. The wallet every dapp tests against, which makes it the safest choice for compatibility even when it is not the safest choice for signing.
Where does MetaMask rank among best self-custody wallets?: #3 of 8, scoring 8.7 out of 10 — documented, with gaps on our band scale.
What is the weakest part of MetaMask?: Key handling at 8.4. Keys are held locally, encrypted with the user's password, with optional cloud backup of the vault; broad hardware-wallet support.

Strengths and weaknesses

In its favour

Universal dapp support — everything is tested against it
Solid hardware-wallet integration
Snaps architecture extends it beyond EVM chains

Against it

Built-in swap fees are above the market rate
Interface pushes its own services persistently

The compatibility no rival has

Every EVM dapp is built and tested against MetaMask, which means a connection failure elsewhere is usually solved by opening MetaMask. That is not a technical advantage so much as an ecosystem position, and it is worth keeping the wallet installed for even if you sign elsewhere.

Safety has improved, and it is not the leader

Transaction previews with simulation now appear on supported networks, some malicious contracts are flagged, and an unlimited approval can be edited down before signing — an option most users still do not know exists. Rabby does all of this more thoroughly and by default.

Where the money is made

In-app swaps carry a disclosed wallet fee on top of the routing spread. Convenient, and on a large trade the difference against an aggregator is real money. Check the quote before accepting the default.

Snaps, and what they change

Extensions add non-EVM chains and new features, which widens what the wallet can do and also what it can be asked to trust. Install them as deliberately as you would a browser extension.

Who it is for

Everyone, at least as a secondary wallet, because compatibility problems elsewhere are usually solved here. As the primary signer for large balances it should always sit behind a hardware device.

Frequently asked questions

Is MetaMask safe?+

Keys are held locally and encrypted with your password, hardware wallets are well supported, and transaction previews now warn on some malicious contracts. Pair it with a hardware wallet for meaningful balances rather than relying on the extension alone.

Are MetaMask swap fees high?+

There is a disclosed wallet fee on top of the routing spread. On larger trades, comparing against an aggregator before accepting the in-app quote is worth the extra minute.

What are MetaMask Snaps?+

Extensions that add capabilities such as non-EVM chain support. They broaden what the wallet does and also what it trusts, so install only what you need.

How MetaMask compares

8 services in best self-custody wallets

How to read these tables

No paid placement. Nobody buys a position, a score or a mention. We take no affiliate commission on any link in this section, and operators do not see their score before it publishes.

Scores are read from the record. Each one is derived from the fact printed beside it — a published attestation, a contract, a register entry, an incident report — against bands that describe evidentiary states. Facts age: each table carries the date it was last verified, and this is not an audit.

Nothing here is financial advice. Crypto services fail, change terms and withdraw from markets without notice. Verify anything that matters directly with the provider, and tell us when we get something wrong.

Found something out of date? Write to the desk — corrections are printed with the table.