Big Wallet is a production cryptocurrency wallet for Apple platforms (iOS, macOS, visionOS) paired with a Safari Web Extension that injects Ethereum (EIP-1193) and Solana (Phantom-compatible) provider APIs into web pages, letting dapps connect like MetaMask/Phantom. The native apps handle key management (BIP39/BIP32 HD derivation, secp256k1 and Ed25519 signing), password and biometric authentication, Keychain storage via a shared access group, transaction approval with EIP-1559/legacy fee editing, Solana transaction summaries, account management, and custom network support. A small Cloudflare Worker issues RS256 JWTs that authenticate keyless Alchemy JSON-RPC calls. This is purely an application repository, not a data-research one; the only data-like artifacts are cryptographic test vectors and a 184-chain network catalog.