Henceforth

A mobile forth

$9.99 · In‑App Purchases · Designed for iPad. Not verified for macOS.

Bitcoin Script's stack model came from FORTH. Henceforth lets you write in the language Script was modelled on — then sign and broadcast. Bitcoin you can script. Henceforth is a Bitcoin SV wallet wrapped around a complete FORTH terminal. Send, receive, and broadcast real Bitcoin transactions from a programmable command line. Define your own words, build raw transactions byte by byte, and visualise data with code you write yourself. There's nothing else like it on the App Store. YOUR KEYS, YOUR COINS Private keys live in the iOS Keychain — never on a server. Every send is gated by Face ID or Touch ID. Transactions are permanent on the BSV blockchain, and fees are typically a fraction of a cent. For extra safety, Cold Mode signs transactions on a second offline iPhone over AirDrop — a real air-gap setup without dedicated hardware. A TERMINAL THAT DOES MORE THAN PRINT HELLO WORLD Full Forth-2012 CORE compliance (133 standard words) plus 200+ Bitcoin Script and BSV protocol extensions. Print a string: ." Hello, World" Define a word and run it: : square dup * ; 5 square . Pay someone from the command line: 1000 s" 1Q88RPbg..." send The terminal isn't a toy shell — it's the same Forth interpreter that builds the transactions you broadcast. WRITE, SAVE, AND RUN YOUR OWN PROGRAMS Save reusable code as .fs files. The built-in editor and file manager lets you write, version, and rerun scripts. The classic FORTH way: small composable words growing into your own personal vocabulary. CHARTS FROM THE STACK Bar, line, and pie charts from any values on the stack. Visualise sequences, payment histories, or whatever data you compute — directly from FORTH code. WHAT'S INSIDE • BSV wallet with multi-recipient sends and raw transaction builder • Privacy-aware UTXO selection — fresh change addresses every send • 1Sat Ordinal awareness — protects your inscriptions from accidental spending • SPV transaction verification — trust math, not servers • Universal app — iPhone, iPad, and Mac • Local-first — works offline; on-chain when you broadcast • Forever yours — one-time purchase, no subscriptions, no ads Powered by FORTH, the stack-based language Chuck Moore created in 1970.

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This update focuses on wallet reliability, with terminal and interface refinements throughout. Wallet • Unconfirmed balance no longer gets stuck. A transaction that never reached the network is now detected and its outputs cleared — and they stay cleared after the app is reopened. • Fixed a "malformed input" error that could block sending. • Pending transactions now sort to the top of the UTXO list. • More reliable balance syncing — pending transactions are re-checked first on every refresh, partial syncs save progress instead of discarding it, and the balance recomputes after every change. • Cross-device sync — a wallet's public data (addresses, UTXOs) syncs via iCloud, and wallets seen on another device are offered for import. • Stuck outgoing transactions are detected, and can be retried or dropped from the UTXO detail screen. • Clearer sync status — an honest "Catching up" indicator. Notifications • Deposit alerts now fire only for genuinely recent payments (the last 24 hours) — no more notifications for a wallet's existing history on first sync or import. Terminal • New word: chars>data. hex2data / data2hex gain arrow-form names hex>data / data>hex (the old names still work). • Fixed confusing errors after an unterminated string or comment carried into the next line. • Hold delete to repeat; the suggestion bar no longer overflows or covers the keypad toggle. Also • Redesigned amount-unit control on the payment screen; a broadcast button when decoding a transaction. • Native macOS app icon and a range of Mac layout fixes.

The developer, Henceforth bitcoin limited, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    • Henceforth bitcoin limited
    Size
    • 11.4 MB
    Category
    • Education
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    • iPad
      Requires iPadOS 26.0 or later.
    • Mac
      Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © Copyrights belong to Henceforth Bitcoin LTD