Syxloom: MIDI SysEx

Patch Bench, Diff & Devices

$3.99 · Designed for iPad. Not verified for macOS.

Syxloom is an offline MIDI System Exclusive workbench for synthesists, repair benches, studios, and anyone keeping older hardware alive. Capture a dump, see exactly what arrived, split it into the patches that matter, and send back precisely what you choose — with the byte-level detail a service manual assumes you have. THE BENCH - Send sets: ordered selections from your library sent as one paced transfer - Per-set message gap, with a wire-time estimate before you commit - Byte-level diff of any two messages: changed regions by offset, aligned hex - Sets survive renames — they reference entries, not copies CAPTURE - Finds every CoreMIDI source: USB interfaces, Bluetooth MIDI, virtual ports, network sessions, and other apps on this device - Reassembles dumps that arrive across many MIDI packets - Keeps interleaved clock and active-sensing bytes out of the payload - Flushes stalled transfers so a failing cable is visible, not silent - Live receive meter: bytes per second, as it happens DEVICES - Census: broadcast the Universal Identity Request, and every reply becomes a card naming manufacturer, family, member code, and firmware version - Request builder: Roland RQ1 with the checksum computed over address and size; a raw hex composer that validates 7-bit data before sending - Pacing profiles: per-device transmit gaps, set once and remembered INSPECT - Manufacturer identification from the full published one- and three-byte ID registry, with regional grouping - Universal message decoding: identity, GM state, master volume, and more - Roland and Yamaha checksum verification, with the failing byte named - Structural checks: framing, 7-bit violations, truncation, declared lengths LIBRARY - Name, tag, and annotate every message; instant search across all of it - Import .syx files, paste hex straight from a service manual, export and share anything Everything is stored on this device. No account, no ads, no analytics, no network calls. Your patches are yours.

  • This app hasn’t received enough ratings or reviews to display an overview.

The Patch Bench update. BENCH — a captured bank is no longer all-or-nothing. Build send sets: ordered selections from your library, delivered as one paced transfer with a per-set gap between messages. Reorder by drag, and the wire-time estimate updates as you build. DIFF — compare any two messages or captures byte by byte: changed regions named by offset, an aligned hex view, and a one-line verdict. DEVICES — run a census: Syxloom broadcasts the Universal Identity Request and turns every reply into a card naming the manufacturer, family, member, and firmware. A request builder composes Roland RQ1 messages with the checksum computed for you, plus a raw hex composer that validates before it sends. Per-device pacing profiles remember how slowly old hardware needs to be fed. Also: a live receive meter on the Monitor, a new icon, and a new instrument-panel look across the app. Everything stays on this device — no account, no tracking.

The developer, Robert Corbin, 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
    • Robert Corbin
    Size
    • 2.3 MB
    Category
    • Music
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Shadowfetch