WATS Wallet vs Tangem: NFC metal card wallets compared

Both are CR-80-style NFC cards you tap to a phone, and both deliver real self-custody — the difference is how much each one does for you. The WATS NFC Metal Card is an access and authentication device built to extend a full wallet: you tap it to authenticate WATS Wallet access and to NFC tap-to-sign with the WATS mobile app, while your keys stay safely inside the non-custodial WATS apps and remain usable across the extension, mobile and web. A Tangem card takes the narrower route of being the wallet itself: its EAL6+ chip generates and stores the private key, and tapping the card signs each transaction offline. So Tangem's card is a standalone key; WATS's card unlocks and co-signs for keys you can reach across four products.

WATS gives you secure, non-custodial self-custody with room to add protection: you control your keys in the WATS apps, the Hot Wallet adds an optional dual-custody model where you and WATS each hold a separate key, and the NFC Metal Card — an NTAG 216 chip with AES-128 in an IP68 / MIL-STD-810 build — authenticates access rather than being your sole key, so losing the card never moves your funds. Tangem is cold storage with a strong pedigree: the private key never leaves the card, the firmware is open-source, immutable (no updates) and independently audited (Kudelski Security, Riscure), and backup works by cloning the same key onto every card in a 2- or 3-card set. Because Tangem is seedless by default, losing all cards in a seedless set means the funds are unrecoverable (an optional seed phrase exists for advanced users), so you keep the whole set safe. WATS's model keeps a recoverable access companion separate from your keys; for exact recovery steps, see wats.gitbook.io/wats.

WATS supports the major EVM chains plus Solana and TON for send, receive, swap and bridge, and its Hot Wallet runs on a single ATS fee token: every action — swaps, transfers, staking — is paid in ATS instead of holding a different native gas coin on each chain, which abstracts gas away and pairs with the dual-custody model. That single-token simplicity is what most active multi-chain users want day to day. Tangem takes the conventional route: it supports tens of thousands of tokens across roughly 90 blockchains and charges no wallet fees, with you paying native network gas per chain plus any third-party swap-provider spread through its Tangem Express aggregator. Broad coverage is genuinely useful for pure holding, while WATS's gas abstraction is built for people who actually move and swap across chains.

If your priority is a single, offline cold card and the widest raw chain count, Tangem's card-is-the-key model and mobile-only flow do that one thing cleanly. For nearly everyone else, WATS covers the same secure self-custody and the same NFC-card convenience while doing much more around it: one identity across the Chrome extension, mobile app, web hot wallet and NFC Metal Card, in-browser dApp connection and signing, swap and bridge across EVM, Solana and TON, and single-token ATS gas abstraction. The NFC card adds tap-to-authenticate speed on top of a full non-custodial wallet rather than replacing it — so you get self-custody, an NFC card and an everyday multi-chain toolkit in one place. That is why WATS is our recommendation for most users.