Bull Wallet, a self-custodial, bitcoin-only mobile wallet that places a strong emphasis on privacy and low-fee payments, has launched worldwide on iOS and Android, the developer announced. The app is designed to serve both cypherpunks and newcomers who value financial sovereignty and transactional privacy.
Multi-Network Architecture and Atomic Swaps
Bull Wallet uniquely combines support for onchain Bitcoin, the Lightning Network, and the Liquid sidechain. By integrating non-custodial atomic swaps powered by Boltz, users can send and receive funds seamlessly across these different networks without relying on third-party custodians. An autoswap feature is also included to move Liquid funds back to the onchain Bitcoin network when needed. This cross-network capability significantly enhances the usability of Bitcoin for everyday payments while maintaining self-custody.
Rich Feature Set for Advanced Users
The wallet comes equipped with a comprehensive array of features that appeal to power users: BIP39 mnemonic seed phrases, SegWit descriptor-based accounts for advanced address management, coin selection to optimize privacy and fees, watch-only imports for tracking addresses without exposing private keys, and the optional ability to connect to a personal Bitcoin node for full validation. Bull Wallet already supports Coldcard hardware wallets, and the development roadmap includes further hardware integrations, multisig/miniscript support, Lightning Network addresses (LNURL), silent payments, and other upgrades.
Privacy by Design
Privacy is at the core of Bull Wallet's design philosophy. The app encrypts all secrets on the device, uses a secure keyboard to prevent keylogging, does not send push notifications or track IP addresses, supports PayJoin (Pay-to-Endpoint) for enhanced transaction privacy, and leverages confidential Liquid UTXOs to hide transaction amounts on the Liquid sidechain. Furthermore, Bull Wallet is fully open-source, with reproducible builds planned to ensure that the code running on users' devices matches the published source code, fostering transparency and trust.
Platform Availability and FAQ
Bull Wallet is available globally on both iOS and Android. Android users additionally have the option to connect directly to the native Bull Bitcoin exchange for buying and selling bitcoin within the app. The developer has provided the following answers to frequently asked questions:
- What platforms is Bull available on? — Bull is available worldwide on iOS and Android.
- Which networks does Bull support? — Bull supports Bitcoin onchain, Lightning Network, and Liquid with non-custodial atomic swaps.
- Is Bull private and open-source? — Yes — Bull is open-source, privacy-focused, encrypts secrets, and collects no IP or tracking data.
- Can I use hardware wallets with Bull? — Yes — Bull already supports Coldcard and will add more hardware wallet integrations.
With its focus on privacy, low fees, and self-custody across multiple Bitcoin layers, Bull Wallet presents a compelling option for anyone seeking a secure and versatile mobile Bitcoin wallet. The planned future enhancements, including multisig and silent payments, indicate a strong commitment to evolving with the needs of the Bitcoin community.