Tonkeeper rebranded to Keeper on September 15, adding support for Bitcoin, Ethereum, Tron, Arbitrum, Base, and BNB Chain to a wallet that had operated as a TON-only product since its launch. The company said the wallet has accumulated 77 million downloads and framed the expansion as a response to how crypto users now hold assets.
"Crypto stopped being one chain per wallet, and so did we," Keeper wrote in its announcement.
The multichain functionality is live now in the iOS and Android apps, with web, desktop, and browser extension support arriving shortly after.
Tonkeeper is now Keeper
— Keeper (prev. Tonkeeper) (@keeper_wallet) September 15, 2026
The best self-custodial wallet on TON now holds assets on $BTC, @ethereum, @trondao, @arbitrum, @base, @BNBCHAIN — with more chains landing soon. 77 million downloads and counting. One wallet for everything you own.
Tonkeeper was built for one chain and… pic.twitter.com/r1kuoRlWWX
Why TON support required a separate wallet architecture in the first place
Keeper addressed a question that likely occurred to longtime users directly: why build a new wallet rather than simply adding networks to the existing one. The answer comes down to key generation.
"TON uses its own key generation scheme, which isn't compatible with the BIP-39/44 standard that EVM networks and most other wallets run on," the company explained. "That's why a single seed phrase technically can't cover both TON and the other networks. You need a separate wallet with a separate phrase."
BIP-39 and BIP-44 are Bitcoin Improvement Proposals that became the de facto standard for how the vast majority of crypto wallets generate and organize private keys from a single seed phrase. BIP-39 defines how a mnemonic phrase, typically 12 or 24 words, converts into a cryptographic seed, while BIP-44 defines a hierarchical structure that lets one seed derive keys for multiple accounts and multiple blockchains, provided those blockchains use compatible elliptic curve cryptography. Ethereum, Bitcoin, Tron, Arbitrum, Base, and BNB Chain all fit within this compatible ecosystem, which is why a single seed phrase can span all of them in Keeper's new architecture. TON was designed independently of this standard, using its own key derivation approach, which explains why Tonkeeper historically could not simply extend its existing wallet infrastructure to cover EVM chains without users needing to manage two entirely separate seed phrases and recovery flows.
The practical result for users is a single recovery phrase covering every account across every supported network, including any networks Keeper adds going forward.
How Keeper handles swaps and gas fees across chains
Cross-chain swaps happen inside the wallet without requiring bridges or wrapped tokens, built in partnership with MoonPay. Users select the asset they hold and the asset they want, confirm the transaction, and the wallet handles the conversion internally rather than routing through external bridge infrastructure that typically introduces additional smart contract risk and settlement delay.
Cross-chain bridges have historically represented one of the largest attack surfaces in crypto. The Ronin Bridge exploit in March 2022 resulted in losses exceeding $600 million, and the Wormhole bridge lost over $320 million the previous month, both incidents stemming from vulnerabilities in the smart contracts that lock assets on one chain and mint representative tokens on another. A wallet-level swap mechanism that avoids exposing user funds to a separate bridge protocol reduces one specific category of risk that has proven costly across the industry, though it introduces reliance on MoonPay's liquidity and pricing infrastructure as the intermediary instead.
Gas fees are handled through Keeper's existing Battery feature, which covers network fees on TON and Tron. That means a user holding USDT on Tron can move those funds without needing to separately acquire TRX just to pay the transaction fee, removing a friction point that has affected new crypto users across many chains where the native gas token and the asset a user actually wants to transact in are different.
What existing Tonkeeper users get during the transition
Keeper is offering 0% fees on cross-chain swaps through September 22 for users who migrate during the transition window. Users who move their funds during this period also receive tickets toward a mystery raffle, with details to be revealed within a week.
The company positioned the rebrand as additive rather than a departure from its TON roots. "TON is home," Keeper wrote, noting that jettons, NFTs, staking, DNS support, and the in-wallet browser remain unchanged from the original Tonkeeper experience. "TON is not going anywhere. Neither are we. We are taking it further."
Tanya Petrusenko
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