https://t.co/zFbDK73nYF
Ownbit
Non-custodial mobile wallet turning spare phones into air-gapped signers with cross-chain multisig
3.7/ 5
Our score
Good
Custody
Self-custodial
Chains
BitcoinEthereumSolanaBNB Chain+3
Platforms
iOSAndroid
Open source
No
In-app swaps
Yes
Hardware wallet support
No
What is Ownbit?
Ownbit is a non-custodial mobile cryptocurrency wallet that enables users to configure air-gapped cold storage using a spare smartphone and coordinate decentralized multi-signature security across multiple blockchains. By relying on QR-code data transfers between an offline signer and an online watch-only interface, it eliminates the requirement for proprietary hardware devices.
Company and operations
The application is operated by BITTOOL PTE. LTD., an entity based in Singapore. Ownbit has operated under its brand name since 2017. Development has centered on self-custodial software tools for mobile platformsfor individual cold storage setups, family vaults, and decentralized organization treasuries.
Wallet architecture and network support
Ownbit functions as a purely self-custodial client where private keys and recovery phrases remain encrypted locally on the mobile device and are never sent to remote servers. Users retain BIP32, BIP39, and BIP44 derivation standard compatibilityfor seed phrase imports and exports. The wallet supports personal hot accounts, air-gapped cold storage signing, and m-of-n multisig setups. Multisig configurations use native P2SH on Bitcoin, native signer lists on the XRP Ledger and Stellar, and public smart contracts on Ethereum and BNB Chain. Other supported networks include Tron, Solana, Optimism, Dogecoin, Litecoin, and Cardano. The app also supports WalletConnect connections, ERC-721 and ERC-1155 NFTs, and EVM contract bytecode deployment directly through hexadecimal data inputs.
Pricing and regional availability
Ownbit is available internationally through standard iOS and Android app stores without mandatory identity verification (KYC). The base download includes a 7-day free trial. Ongoing use with multiple wallets and advanced multi-signature setups requires an annual membership tier, priced at $69, $239, or $599 per year. Standard network gas fees apply for on-chain transfers, alongside independent third-party provider fees for swap and bridge transactions executed inside the application.
Security and trade-offs
Ownbit has not conducted a paid commercial third-party smart contract or application audit, stating it relies instead on open-source on-chain contracts and internal AI model review processes. While this software setup avoids proprietary hardware vendor lock-in, it shifts physical device security and operating system hardening entirely onto the user. Forgetting wallet passwords without an offline mnemonic backup results in irreversible asset loss, and subscription tiers add recurring software costs not found in typical open-source wallets.
Best for:Teams managing multi-signature treasury assetsUsers creating air-gapped phone cold storageSelf-custody setups requiring no KYC
Pros and cons
Pros
- Eliminates dedicated hardware wallet costs by using offline smartphones as air-gapped signers
- Self-custodial keys remain encrypted locally without central server custody
- Supports native multisig on Bitcoin, XRP Ledger, and Stellar without third-party smart contracts
- No identity verification or account KYC required to set up wallets
Cons
- No commercial third-party security audits completed for application code
- Advanced multisig tiers require annual subscriptions ranging from $69 to $599
- Forgotten wallet passwords cannot be recovered without an offline seed phrase backup
- Desktop and browser extension interfaces are unavailable
Our review
3.7/5
Good
Ownbit delivers versatile multisig and offline QR cold storage across major blockchains, but operates under a subscription model without independent commercial security audits.
Ownbit is a non-custodial cryptocurrency mobile wallet developed by Singapore-based BITTOOL PTE. LTD., operating since 2017. Its primary strength lies in key management architecture. Users can configure an offline spare phone as an air-gapped cold storage signer using QR codes, eliminating the need to purchase dedicated hardware devices. It also supports decentralized m-of-n multisig setups across major networks, using native P2SH on Bitcoin, native signer lists on XRP Ledger and Stellar, and smart contracts across EVM chains like Ethereum and BNB Smart Chain.
The application supports multiple networks, including Bitcoin, Solana, Tron, Cardano, and Optimism, alongside standard ERC20, ERC721, and ERC1155 tokens. Connectivity to decentralized applications is supported via WalletConnect, and users can deploy custom EVM contracts by submitting bytecode directly through transaction hex data. For identity and recovery, the app adheres to BIP32, BIP39, and BIP44 standards, encrypting mnemonics locally on the device while generating private keys strictly when signing transactions.
A notable trade-off is Ownbit's verification record: the team has stated that it has not undergone paid commercial security audits and has no plans to commission them, relying instead on public smart contracts and internal automated reviews. In addition, full utility requires paid memberships. Following a 7-day free trial, annual subscriptions run at $69, $239, or $599 to unlock multiple wallets and expanded multisig setups.
Ownbit suits organizations, families, and advanced users seeking cross-chain multisig governance or air-gapped signing using existing mobile hardware.
Specs
| KYC required ⓘ | No · unverified |
|---|---|
| Wallet type | Mobile · unverified |
| Custody | Self-custodial · unverified |
| Chains | Bitcoin, Ethereum, Solana, BNB Chain, Optimism, Tron, Other · unverified |
| Platforms | iOS, Android · unverified |
| Open source | No · unverified |
| Hardware wallet support | No · unverified |
| In-app swaps | Yes · unverified |
| NFT support | Yes · unverified |
| WalletConnect | Yes · unverified |
| Security features | Air-gapped QR signing, Multi-signature (m-of-n), Biometric authentication (Face ID), Local key encryption, BIP39 recovery phrase · unverified |
| Recovery without a seed phrase | No · unverified |
| Passkey login | No · unverified |
| Multisig | Yes · unverified |
| Built-in dApp browser | Yes · unverified |
| Perpetuals trading | No · unverified |
Not disclosed by the provider: Staking, Buy crypto in app, Swap fee.
Data from the provider's website and public sources. Fees and availability change; confirm on the official site before you sign up.
Key features
Air-gapped QR signing
Converts an offline spare mobile device into a dedicated cold storage signer that approves transactions exclusively via QR codes.
Cross-chain multisig
Supports m-of-n multi-signature vaults using native scripts on Bitcoin, XRP Ledger, and Stellar, and smart contracts on EVM chains.
Standard mnemonic compatibility
Derives and exports private keys locally using standard BIP32, BIP39, and BIP44 recovery formats.
NFT management
Tracks and manages ERC-721 and ERC-1155 tokens on EVM networks using contract address and token ID queries.
EVM contract deployment
Enables direct smart contract deployment by sending zero-value transactions containing contract bytecode to the 0x0 address.
Biometric transaction signing
Allows Face ID authentication on compatible iOS devices for routine transfers, requiring password re-entry for high amounts.
Inside Ownbit
Ownbit Mobile App
The core non-custodial mobile wallet for iOS and Android, handling hot wallet management, token tracking, and dApp connections via WalletConnect.
Ownbit Cold Wallet
An air-gapped cold storage configuration that turns a spare offline phone into a hardware-style signer using QR-code communication.
Ownbit MultiSig
A decentralized m-of-n multisig architecture that supports collaborative treasury management across Bitcoin, EVM chains, Tron, Solana, and XRP Ledger.
Ownbit screenshots
User reviews
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FAQ
Who operates Ownbit?
Ownbit is operated by BITTOOL PTE. LTD., a company based in Singapore that has run the wallet software since 2017.
How much does Ownbit cost?
Ownbit provides a 7-day free trial for new users. Ongoing access to advanced multisig configurations and multiple wallets requires annual memberships priced at $69, $239, or $599.
Has Ownbit been audited by third-party security firms?
No, Ownbit has not completed a paid commercial security audit and states none is planned. The team relies on public on-chain smart contracts, production track record, and automated model evaluations.
Which blockchains does Ownbit support?
Ownbit supports over 20 networks for cold storage and over 10 for multisig, including Bitcoin, Ethereum, BNB Smart Chain, Solana, Tron, XRP Ledger, Stellar, and Cardano.
Does Ownbit require identity verification (KYC)?
No identity verification is required. Ownbit is non-custodial software where cryptographic keys are generated and stored encrypted on your personal device.
How does the Ownbit cold wallet work without dedicated hardware?
Ownbit turns a spare, permanently offline mobile phone into an air-gapped signer. The offline phone signs transactions using QR code communication paired with a watch-only wallet on an online phone.
Latest from Ownbit on X
iPhone Duo lands Oct 23. Ownbit 5.1 is ready on day one.
The home screen is rebuilt for Duo's passport-shaped display: wallets get the full width, while scan, multisig and settings move to a rail on the right, under your thumb.
Same keys. Same multisig. New shape. https://t.co/XBDZQiO95p
The home screen is rebuilt for Duo's passport-shaped display: wallets get the full width, while scan, multisig and settings move to a rail on the right, under your thumb.
Same keys. Same multisig. New shape. https://t.co/XBDZQiO95p
Ownbit 5.1 is live: XRP Ledger + Stellar get full token and multisig support.
- XRPL tokens like $RLUSD
- Stellar assets like $USDC
- Native multisig on both, using each ledger's own signer lists. No smart contracts.
@Ripple @RippleXDev @XRPLF @xrpl_commons @StellarOrg @circle https://t.co/UGeROUo7fS
- XRPL tokens like $RLUSD
- Stellar assets like $USDC
- Native multisig on both, using each ledger's own signer lists. No smart contracts.
@Ripple @RippleXDev @XRPLF @xrpl_commons @StellarOrg @circle https://t.co/UGeROUo7fS
Ownbit 5.0 for Android is here.
Rebuilt from the ground up: new architecture, new UI, stronger security.
5.0 is a brand-new app — install it, restore with your mnemonic, and your membership moves with you.
Old app still works, but no more updates.
https://t.co/gbWD6sgcUK https://t.co/7UrKdsDdtP
Rebuilt from the ground up: new architecture, new UI, stronger security.
5.0 is a brand-new app — install it, restore with your mnemonic, and your membership moves with you.
Old app still works, but no more updates.
https://t.co/gbWD6sgcUK https://t.co/7UrKdsDdtP
https://t.co/6KXFFTiR08
Recent public posts from @OwnbitWallet, shown as published. Not reviewed or endorsed by CryptoReview.
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