# Syxloom: MIDI SysEx — Patch Bench, Diff & Devices

> Patch Bench, Diff & Devices (iPhone/iPad app by Robert Corbin.)

- Source: https://appshunter.io/ios/app/syxloom-midi-sysex/id6792402261 (this page in markdown: same URL + `.md`)
- Developer: [Robert Corbin](https://appshunter.io/developer/1890247992)
- Category: Music, Utilities
- Price: $3.99
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: English
- Released: 2026-07-29
- Data updated: 2026-09-10
- User reviews in markdown: https://appshunter.io/ios/app/syxloom-midi-sysex/id6792402261/reviews.md

## What is Syxloom?

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.


## Version history (last 4 releases)

### 3.0 — 2026-09-06

Syxloom 3.0 adds a reviewed transfer workbench: frozen message order, destination identity, checksums and effective pacing before every send. Keep distinct completion, cancellation, failure and interruption receipts. Back up the complete local workspace with an integrity check and restore preview, recover unreadable files without silent overwrites, and retain source and termination details for captured dumps. Updated iPhone and iPad navigation includes searchable history, paged inspection and comparison, and an explicitly offline pipeline check.

### 2.0 — 2026-08-28

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.

### 1.1 — 2026-08-21

Syxloom now does the job end to end, with real CoreMIDI underneath.

- Live capture from any CoreMIDI source, with true multi-packet reassembly so a full bank dump arrives byte for byte
- A virtual "Syxloom" port other apps can send into, plus Bluetooth MIDI pairing
- A real .syx importer that reads binary dumps and splits a bank into one entry per patch
- Field-by-field decoding with hex highlighting: manufacturer, device, model, command, address, data, and checksum
- Per-vendor checksum verification, with an honest "not applicable" for the many manufacturers that use none
- Declared byte counts compared against what actually arrived, so a truncated dump is caught
- Paced sending with live progress, cancel, and a pause between messages
- Byte-exact .syx export, hex paste, tags, notes, and search
- A new offline reference: manufacturer IDs, framing rules, checksum coverage, universal sub-IDs, and a safe-send checklist

### 1.0 — 2026-07-29

No release notes.

## More apps by Robert Corbin

- [Daily Word Journey](https://appshunter.io/ios/app/daily-word-journey/id6761548266)
- [Hush Secret Text](https://appshunter.io/ios/app/hush-secret-text/id6761658175)
- [Renew Guard](https://appshunter.io/ios/app/renew-guard/id6761755447)
- [Receipt to PDF](https://appshunter.io/ios/app/receipt-to-pdf/id6761782025)
- [Route Your Pay](https://appshunter.io/ios/app/route-your-pay/id6761783719)
- [Tip Arbiter](https://appshunter.io/ios/app/tip-arbiter/id6761786879)

All apps by Robert Corbin: https://appshunter.io/developer/1890247992

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-10.*