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SUBFROST

Subzero Research Inc

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About this app

SUBFROST is a non-custodial Bitcoin wallet. Send. Receive. Hold. Convert. Earn. Hold Bitcoin and Bitcoin-native assets on the alkanes metaprotocol, straight from your phone. Your keys never leave the device. Convert between Bitcoin-native assets on-chain. Prices are computed on your device from public pool reserves, and every transaction is signed on your device and settles on Bitcoin. No account, no order book, no custody of your funds. Earn with the FIRE Vault: stake DIESEL/frBTC LP for FIRE emissions, bond LP for discounted FIRE, or redeem FIRE for its treasury backing. Every action is built and signed on your device. This is alpha software for an experimental protocol. Use only with funds you can afford to lose.

What's new

Version 1.0.4 · Oct 13, 2026

New in Yield: Lending. Supply assets to earn interest, or borrow against what you supply, with live Supply and Borrow APY and a health bar that shows how close a loan is to liquidation. Every action is built and signed on your device. Convert reaches further: convert BTC to USDC or USDT on Ethereum and back, convert between BTC and ETH, and bridge FB from Fractal Bitcoin to frFB. Each conversion is tracked step by step in Activity. Also new: notifications when you receive funds and when a transaction confirms, Speed Up and Cancel for pending transactions, simpler recovery when you have more than one wallet, iCloud backups that restore on any device, and many fixes that make sending safer and amounts exact.

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