The envelope method for Bitcoin. Organize your wallets into envelopes, set savings goals, and watch your sats stack — all without touching your keys.
Paste any Bitcoin address or import an xpub from your hardware wallet. Sat by Sat fetches the balance read-only — no keys, no custody, no risk.
Give your envelopes a meaningful name and purpose so that your goals are categorized. — "Retirement", "Kids", "Vacations"
Name it and set a target in sats or your local currency. The goal automatically tracks progress against the envelope's total balance — no manual updates needed.
As sats flow into your wallets, your goals update in real time. The envelope method keeps every sat purposeful and your savings strategy crystal clear regardless of how many wallets you have; hot or cold, old or new.
Your sats live in wallets. Wallets flow through envelopes to sort and power your goals.
Paste any mainnet Bitcoin address or import an extended public key (xpub/ypub/zpub). The app derives and scans all HD addresses, aggregates balances, and treats the whole account as a single entity. Your private keys stay offline — always.
Group goals into named envelopes like "Long Term Savings" or "Vacation" or leave them ungrouped. New accounts are seeded with default envelopes so you can start immediately.
Create savings goals with targets in sats or fiat. Goals track progress against the total balance of their envelope — updated automatically as your wallets receive sats. Every sat has a purpose.