Wump is the Bitcoin-only portfolio tracker for people who would rather check than trust.

Declare a wallet with an extended public key (xpub) or a full output descriptor — single-sig, multipath, or sortedmulti multisig — and Wump reads its real on-chain balance and shows you the gap between that balance and the transactions you have recorded. One asset, on purpose.

WHAT WUMP DOES

• Tracks your Bitcoin — what you hold, what you paid, and what it is worth today.
• Reads any wallet you declare from an xpub or an output descriptor (BIP-380/389). Single-sig, multipath and sortedmulti multisig all parse natively.
• Shows the unaccounted delta — your real on-chain balance, next to the balance your recorded transactions add up to.
• Denominates in sats where sats matter and in BTC where they don't. Fees in sat/vB.
• Imports a Coinbase CSV export, or our own template, straight into your ledger. No account linking, no API keys, no read access to any exchange.
• Exports everything you have recorded to CSV at full precision, any time.
• Locks behind a PIN on your device.

WHAT IT COSTS

Nothing, in this release. Record transactions with no count wall — there is no quantity gate on your ledger. Declare one wallet, with its real on-chain balance and the unaccounted delta. Keep the complete portfolio overview and chart across every duration, the statistics tiles, CSV import, CSV export, and PIN lock. No card, no expiry.

READ-ONLY BY CONSTRUCTION

Wump never asks for a private key, a seed phrase, or signing access, and there is no field in the app where one could be entered. Wallets are declared as extended public keys or output descriptors — keys that let Wump read what you hold and never let it move anything. If our database were stolen, no attacker could spend a satoshi of yours.

Wump does not buy, sell, swap, convert, lend, or transfer Bitcoin, and it does not connect to an exchange account. It keeps your record and it reads the chain. That is the whole product.

Every server call is attested. Each account's data is isolated at the database layer. No ads. No data sales. Basic usage measurement through Google Analytics.

BITCOIN ONLY

Bitcoin and only Bitcoin. No other coins. No NFTs. No DeFi. No "we'll add it if there's demand." Other currencies appear only as a fiat-style price reference, never as something you hold. The restraint is the product.

HONEST SCOPE

This is Wump's first Android release. It does what is written above, and nothing more. We do not ship tax reports, alerts, or Lightning. We do not give price advice, buy or sell signals, or predictions of any kind. When something ships, this listing changes — not before.

Bitcoin, only.