MetaMask is the world's most popular crypto wallet. ArcSign is a free USB cold wallet that stores private keys entirely offline. Both let you interact with the same dApps — but they protect your assets in fundamentally different ways. Here's everything you need to know to pick the right one.
The choice between ArcSign and MetaMask isn't really about features — it's about your threat model. MetaMask is optimized for convenience; ArcSign is optimized for security. Both have a place depending on how much value you're protecting and how you interact with crypto.
A detailed side-by-side look at every dimension that matters when choosing a crypto wallet.
| Feature | ArcSign | MetaMask |
|---|---|---|
| Price | Free (Pro $30 one-time) | Free |
| Key Storage Location | USB drive — offline when unplugged | Browser / device local storage |
| Platform | Desktop app (macOS / Windows / Linux) | Browser extension + iOS + Android |
| Mobile App | Planned (not yet released) | Yes (iOS + Android) |
| Supported Chains | 22 chains | 8+ chains (custom RPC possible) |
| WalletConnect Support | Yes (v2) | Yes |
| Token Approvals View | Yes — all 6 EVM chains | No built-in |
| Batch Revoke Approvals | Yes (Pro tier) | No |
| DeFi Positions | Yes (stETH, ankrETH, ankrBNB + APY) | Limited (via Portfolio app) |
| NFT Gallery | Yes (ERC721 + ERC1155) | Yes |
| Encrypted Backup File | Yes (.arcsign, AES-256 — exported file is immediately encrypted) | No |
| Seed Phrase Backup | Yes (BIP39 compatible) | Yes |
| BIP39 / BIP44 Compatible | Yes (import from any BIP39 wallet) | Yes |
| Malware Resistance | High — USB is inaccessible when unplugged | Low — keys readable by malicious extensions |
| Phishing Protection | High — no browser integration | Moderate (relies on user vigilance) |
| Hardware Wallet Replacement | Near-equivalent security model | No — hot wallet by design |
| Open Source | Planned (after 10K users) | Yes |
| DEX Swap Built-in | Yes (Free: 0.1% fee / Pro: best-route free) | Yes (MetaMask Swaps, fee applies) |
| BSC / NodeReal Support | Full (token balances, NFTs, approvals) | Yes |
Features aside, the single most important question is: where do your private keys live, and who can access them? The answer determines your real-world security exposure far more than any individual feature.
With ArcSign, when you're not actively signing a transaction, your USB is unplugged and sitting in a drawer. At that moment, there is no software attack surface. A remote attacker cannot reach key material that is physically disconnected from any network. This is the same core security principle as hardware wallets like Ledger and Trezor — implemented in software, at zero hardware cost.
With MetaMask, your private keys always reside on the device — even when MetaMask is locked. The encryption password reduces risk significantly, but it does not eliminate it. A sufficiently sophisticated piece of malware installed on the same machine can monitor browser memory, intercept clipboard content, or wait for you to unlock the wallet.
For any transaction worth more than $100, spending 10 seconds plugging in your USB and confirming via ArcSign eliminates an entire class of attack vectors. The inconvenience is minimal; the security gain is substantial.
MetaMask lives in your browser — the same process space as thousands of other extensions. Browser extension supply chain attacks are a growing threat in 2026: malicious updates to legitimate-looking extensions can silently exfiltrate wallet contents. Since MetaMask keys reside in browser storage, a compromised extension can attempt to access them.
ArcSign has no browser integration whatsoever. It connects to dApps exclusively through WalletConnect's encrypted relay protocol. The signing process happens entirely inside the ArcSign desktop app, which never runs inside the browser.
One of ArcSign's most underrated security features is built-in Token Approval management. When you interact with DeFi protocols, you grant them permission to spend tokens from your wallet. These approvals persist indefinitely — and if a protocol is later exploited, those old approvals become a backdoor into your wallet.
MetaMask does not surface your approval history natively. You need a third-party tool (revoke.cash, Etherscan, etc.) to even see what you've approved. ArcSign shows all outstanding approvals across 6 EVM chains in one view, and Pro users can batch-revoke them in a single click.
The 2024 EigenLayer restaking exploit and multiple AMM drains in 2025 both affected users who had granted unlimited token approvals months or years before the attack. Routine approval hygiene — viewing and revoking unnecessary permissions — is one of the highest-ROI security practices in DeFi, and it requires tooling that MetaMask doesn't include.
Neither wallet is universally superior for every situation. Here's a practical guide based on what you're actually doing.
The most pragmatic approach for active crypto users is to use both wallets for different purposes. This is not a compromise — it is a genuine best practice that experienced DeFi participants already use with Ledger + MetaMask. ArcSign makes this strategy completely free to implement.
Use ArcSign as your "vault" and MetaMask as your "checking account". Keep most of your value in ArcSign; only bridge small operational amounts to MetaMask.
Long-term holdings, NFT collections, DeFi positions, anything worth more than you're willing to lose. Plug in the USB to sign high-value transactions. Unplug to stay safe.
Small operational amounts for frequent dApp interactions, gas fees, and quick trades. Treat this wallet like cash in your physical wallet — only keep what you need for daily use.
Since ArcSign and MetaMask are both BIP39-compatible, you can also create entirely separate wallets for each role — keeping your vault addresses and operating addresses completely isolated. Even if your MetaMask hot wallet is compromised, your ArcSign vault remains untouched.
Common questions from people evaluating both wallets.
.arcsign backup file (AES-256 encrypted) when you set up your wallet. Unlike many wallets, there is no separate "set a password" step — the exported file is encrypted immediately. Store this backup on a second USB drive or another secure location. As long as you have either the .arcsign backup file or your original BIP39 seed phrase, your funds are fully recoverable on any computer with ArcSign installed.
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