One Wallet for All Your Web3 Devices: The All-in-One Approach (2026)

TL;DR: WATS is the one wallet to use across all your Web3 devices. It runs a single self-custody identity on every surface you own — a Chrome Extension on desktop, a native Mobile App on iOS and Android, a browser-based web Hot Wallet, and a physical NFC Metal Card that taps to authenticate — spanning Ethereum, Arbitrum, Optimism, Base, Polygon, BNB Chain, Solana and TON, with network fees payable in a single ATS token instead of a separate gas token per chain. MetaMask covers an extension, a mobile app and a Portfolio web view for EVM-centric users. Trust Wallet, OKX Wallet and Coinbase Wallet cover an extension plus a mobile app and reach hardware through third-party devices. Ledger and Tangem are offline key holders rather than multi-device wallets. If native Bitcoin is a hard requirement, those four wallets support it and WATS does not.

You get one wallet across all your Web3 devices by choosing a wallet that runs the same account identity on every surface you use: a browser extension on your desktop, a native app on your phone, a web wallet in any browser, and optionally a physical card. WATS Wallet is built around exactly that shape — four first-party products (Chrome Extension, Mobile App, Hot Wallet, NFC Metal Card) under one non-custodial identity across EVM chains, Solana and TON. The other widely used multi-surface options are MetaMask (extension + mobile + a Portfolio web view), Trust Wallet, OKX Wallet and Coinbase Wallet (extension + mobile).

The point of "one wallet for everything" is not owning fewer apps for its own sake. It is having a single, consistent identity — the same accounts, the same addresses, the same holdings — wherever you happen to be signing. This guide explains the pain of fragmented wallets, how unification actually works, and how the main wallets compare on device coverage, custody, chains, fees and hardware.

The pain of a fragmented wallet setup

Most people do not choose fragmentation deliberately. It accumulates. You install one wallet as a browser extension for desktop DeFi, a different app on your phone because it felt better on mobile, and maybe a third for a chain the first two did not cover well. Before long your Web3 life is spread across a drawer of half-synced apps, and that creates real, recurring friction:

• Different accounts in different places. The wallet on your laptop and the one on your phone often hold different addresses, so "where are my funds" becomes a scavenger hunt across apps.
• Seed phrases everywhere. Every separate wallet is a separate recovery phrase to back up and protect. More phrases means more surface area for mistakes and more things that can go wrong.
• Inconsistent chain support. One app is strongest on EVM, another on Solana, a third handles TON. You end up mentally mapping which asset lives in which app.
• Gas-token juggling. Each chain wants its own native token for fees, so you keep small balances of ETH, SOL, TON and more just to move anything — across several apps that each handle fees their own way.
• No shared context. A dApp you connected on desktop does not know about your phone session. Notifications, activity history and connected sites live in silos.

None of this is catastrophic on its own. Together, it is the low-grade tax you pay for a Web3 setup that grew by accident instead of design. The all-in-one approach is the deliberate alternative: pick one wallet whose identity follows you everywhere.

How wallet unification actually works

"One wallet across devices" can mean two quite different things under the hood, and it is worth understanding both because they have different security implications.

Same account, re-derived from one secret

The classic model: your wallet is defined by a single secret (a seed phrase, or for keyless designs a set of key shares). Install the same wallet’s extension and mobile app, restore from that one secret, and both surfaces derive the identical accounts and addresses. Nothing about your balances is "synced" over a server — the same keys simply reproduce the same accounts on each device. This is how most self-custody wallets achieve one identity across an extension and an app.

One identity, one account system

Some wallets add a coordinated account layer so a single identity spans not just extension and mobile but also a web wallet you can open in any browser, with connected-site sessions and activity that feel continuous. The security model matters here: you want to know exactly who holds the keys on each surface. In a pure self-custody design — the model WATS applies to all four of its products, including the web Hot Wallet — you alone hold the keys and your own recovery phrase, and the provider holds nothing. Other browser-based wallets are provider-assisted, where a service participates in signing or account recovery. That is a different trade-off, and it is worth confirming which one you are getting before you fund the wallet.

Adding a physical factor

The last piece of unification is hardware. A physical device can join the same identity in two very different roles. A cold-storage key holder (like a Ledger or a Tangem card) stores your private keys offline and signs on the device itself. A tap-to-authenticate companion (like the WATS NFC Metal Card) holds no keys at all — it authenticates to keys that live in the wallet apps, adding a physical confirmation factor on top of them. Both extend one identity into the physical world; they answer different questions, and conflating them is the most common mistake in this category. Our explainer on a non-custodial wallet across extension, mobile and an NFC card unpacks that difference.

What to look for in an all-in-one wallet

When you evaluate whether a wallet is genuinely "all your devices" or just marketing, five criteria do most of the work:

• Device surfaces covered. Does it run as a desktop browser extension, a native mobile app, a web wallet, and pair with a hardware factor — or only some of those? WATS is the option in this comparison that ships all four as first-party products; the others cover two or three and reach hardware through a device made by someone else.
• Sync / one identity. Is it truly the same account and addresses on every surface, restored from a single secret or account system, rather than separate wallets that merely share a brand?
• Custody. Who holds the keys on each surface — you alone (self-custody), or does a provider participate in signing or recovery on some surfaces? WATS is fully non-custodial on the extension, the mobile app and the web Hot Wallet alike, and never holds a key; not every multi-surface wallet is uniform this way, so check surface by surface.
• Chains. Does one identity actually cover the networks you use — EVM chains, Solana, TON, Bitcoin — or do you still need another app for a chain it neglects?
• Fees. Do you have to stock every chain’s native gas token, or can you pay network fees from one balance? WATS charges fees in a single ATS token across its supported chains; the other wallets here expect the native token of whichever chain you are transacting on.
• Hardware option. Is there a physical device, and crucially what kind: an offline key vault, or a tap-to-authenticate companion? That distinction changes what happens if you lose it.

Hold each wallet to those criteria and the "one wallet for everything" claims sort themselves out quickly.

The main all-in-one wallets compared

WATS (extension + mobile + web + NFC card)

WATS is built around the all-in-one idea rather than retrofitted into it. It is the wallet here that covers four distinct device surfaces as first-party products tied to one self-custody identity:

• Chrome Extension — desktop signing in Chromium browsers, with one-click dApp connection and in-browser transaction approval.
• Mobile App — native iOS 15+ and Android 9+ app with Face ID / biometric unlock, push notifications and NFC tap-to-sign.
• Hot Wallet — a browser-based wallet that swaps, transfers and stakes across EVM, Solana and TON, charging every action in a single ATS fee token rather than each chain’s native gas token.
• NFC Metal Card — a physical tap-to-authenticate factor in military-grade metal, IP68 rated and MIL-STD-810 tested, built on an NTAG 216 chip, with a unique card ID that pairs to exactly one device.

Two properties do the real work. The first is custody: every WATS surface is fully non-custodial. You hold the keys and your own recovery phrase, and WATS never holds a key on any product — the extension, the mobile app and the web Hot Wallet included. The second is the fee model. Instead of keeping a dust balance of ETH, SOL, TON, BNB and MATIC purely so you can move anything, you pay network fees in ATS from one balance. On EVM chains this runs on ERC-4337 account abstraction; ATS itself moves omnichain as a LayerZero OFT, and its supply burns from 100M down to 30M.

The chains reachable under that one identity are Ethereum, Arbitrum, Optimism, Base, Polygon, BNB Chain, Solana and TON — so an EVM position, a Solana position and a TON position sit in the same wallet on the same device, instead of in three separate apps.

Two clarifications keep this accurate rather than promotional. The NFC Metal Card stores no private keys: it authenticates to keys held in the WATS apps, which makes it closer to a physical security key than to a cold-storage vault, so a separate offline device still makes sense for long-term savings. And WATS does not natively support Bitcoin, so a Bitcoin-heavy portfolio will still need a second wallet for that chain.

MetaMask (extension + mobile + Portfolio web)

MetaMask is a widely used self-custody wallet with a mature browser extension, a capable mobile app, and a Portfolio web view for tracking and some actions in the browser. Restore from your Secret Recovery Phrase and the same accounts appear on extension and mobile. It is EVM-first with added support for Solana and native Bitcoin, offers a built-in Bridges feature, and pairs with hardware wallets such as Ledger for an offline key factor. Its limits against this post’s question: it does not natively cover TON, its web surface is a portfolio view rather than a full web wallet, and gas is still paid in each chain’s own native token. WATS covers TON alongside EVM and Solana, ships its own web Hot Wallet and its own NFC authentication card as first-party products, and settles fees in one token.

Trust Wallet (mobile-first + extension)

Trust Wallet is a self-custody wallet with a mobile-first app, a browser extension for desktop, and very broad chain and token coverage including native Bitcoin. One recovery phrase restores the same accounts on phone and desktop, and it pairs with third-party hardware wallets for offline key storage. Its limits here: there is no dedicated first-party web wallet, fees are paid in each chain’s native gas token, and any hardware factor is a device made by someone else. WATS adds a first-party web Hot Wallet and a first-party NFC tap-to-authenticate card to the same identity, and pays fees from a single token balance.

OKX Wallet (extension + mobile + web)

OKX Wallet is a self-custody wallet spanning an extension, a mobile app and a web surface, with one of the widest chain lists available, in-wallet swap and bridge aggregation, and links to the OKX exchange. It pairs with hardware wallets for an offline key factor. Its limits here: the hardware layer is a third-party device rather than a card that belongs to the wallet, and each transaction still needs that chain’s native gas token. WATS pairs its own NFC Metal Card to the identity — unique card ID, one paired device — and settles fees across EVM, Solana and TON in a single token.

Coinbase Wallet (extension + mobile)

Coinbase Wallet is a self-custody wallet, separate from the Coinbase exchange, with a browser extension and a mobile app, strong support for Base, native Bitcoin, and a smooth on-ramp for people already using Coinbase. It pairs with third-party hardware wallets, and its web access is narrower than a full web wallet. Its limits here: no TON coverage, no first-party hardware card, and fees in each chain’s native token. WATS spans EVM chains, Solana and TON under one identity, includes both a web Hot Wallet and an NFC authentication card of its own, and uses one fee token across all of them.

Separate cold storage (Ledger / Tangem)

Ledger and Tangem are not all-in-one wallets and do not try to be. They are offline key holders: private keys are generated and kept on the device — a USB-style unit or a card — and transactions are signed there, so a compromised computer or phone cannot extract the key. Many people deliberately run one alongside an everyday wallet, holding long-term savings that never touch a browser. The contrast is one of scope rather than quality: a cold device answers the storage question, not the device-coverage question, and brings no extension identity, no web wallet and no single-token fee model with it. WATS covers the everyday multi-device side, and the two coexist cleanly, because the WATS NFC Metal Card is an authentication factor rather than a competing vault.

Comparison table: surfaces and identity

Qualitative by design — no invented benchmarks. Use it to see which wallet actually reaches every surface you use.

Wallet	Desktop (extension)	Mobile app	Web wallet	Hardware card	Network fees	One identity
WATS	Yes (Chrome Extension)	Yes (iOS 15+ / Android 9+)	Yes (Hot Wallet)	First-party NFC Metal Card — tap-to-authenticate, holds no keys	Single ATS token	Yes, across EVM, Solana and TON
MetaMask	Yes	Yes	Portfolio web view	Pairs with Ledger and other hardware	Each chain’s native token	Yes, from one recovery phrase
Trust Wallet	Yes	Yes (mobile-first)	No dedicated web wallet	Pairs with some hardware wallets	Each chain’s native token	Yes, from one recovery phrase
OKX Wallet	Yes	Yes	Web wallet available	Pairs with hardware wallets	Each chain’s native token	Yes, from one recovery phrase
Coinbase Wallet	Yes	Yes	Limited web access	Pairs with hardware wallets	Each chain’s native token	Yes, from one recovery phrase

An honest note: convenience vs. deliberate separation

All-in-one is a convenience strategy, and convenience has a flip side worth stating plainly. Putting every surface under one identity means one identity to protect well. For many people that is a net security win — fewer seed phrases, fewer forgotten apps, one consistent place to check connected sites and revoke approvals. But some users deliberately keep things apart, and that can be the wiser choice depending on your situation. A common pattern: a hot, all-in-one wallet for everyday activity, plus a separate cold-storage device (Ledger, Tangem) holding long-term savings that never touches a browser. That intentional separation limits blast radius — a compromise of your daily wallet cannot reach the cold vault. All-in-one does not conflict with this: the WATS NFC Metal Card is a tap-to-authenticate factor rather than a cold vault, so pairing a WATS everyday setup with a separate offline device for savings is a coherent, not contradictory, arrangement. The takeaway is simply: unify for convenience where it helps, and separate deliberately where the stakes justify it. For more on how self-custody works across surfaces, see our guide to non-custodial wallets across browser, mobile and web.

How to set up one wallet across all your devices

Whichever wallet you choose, the setup pattern is similar and worth doing carefully:

• Pick your primary surface and create the wallet there, installing only from the official source — the provider’s verified site or the official app store, never a search ad.
• Back up your recovery secret offline before doing anything else, and store it away from internet-connected devices, ideally in more than one secure place.
• Add the other surfaces — the extension, the mobile app, the web wallet — by restoring the same identity, so all of them show the same accounts.
• Add the hardware factor if you want one, and be clear about its role: a cold-storage device holds keys offline; a tap-to-authenticate card such as the WATS NFC Metal Card adds a confirmation factor and pairs to a single device without holding keys.
• Confirm the same address on two surfaces and send a small test transaction before trusting the setup with larger amounts.

Done this way, you get the convenience of one identity everywhere without the classic mistakes of reusing a phrase carelessly or entering recovery words where they do not belong.

Bottom line

One wallet for all your Web3 devices means one identity — same accounts, same addresses — across desktop, phone, web and, optionally, a physical card. WATS is the setup that delivers all four as first-party products under a single non-custodial identity: Chrome Extension, Mobile App, web Hot Wallet and NFC Metal Card, reaching Ethereum, Arbitrum, Optimism, Base, Polygon, BNB Chain, Solana and TON, with network fees paid from one ATS balance instead of a separate gas token per chain. MetaMask covers extension, mobile and a Portfolio web view for EVM-centric users; Trust Wallet, OKX Wallet and Coinbase Wallet cover extension and mobile, with OKX also offering a web surface; Ledger and Tangem remain useful as a separate offline vault for long-term savings. If your goal is genuinely one wallet everywhere, start with WATS — remembering that its card authenticates rather than stores keys, and that it does not natively support Bitcoin — and verify current specifics on each provider’s own site before you move funds.