Launch offer — $59 instead of $99, until 4 October
A macOS and Windows app that connects grandMA3 onPC to Claude. Every write is read back off the console.
Also available for Windows Also available for macOS
v0.7.5 · signed · macOS 12+ or Windows 10+ · requires grandMA3 onPC and Claude Desktop · full requirements
Asking what a macro someone else left behind actually does. GrandPA reads it straight off the console and explains it in plain English.
GrandPA opens your show file to your agent as a set of MCP tools. Ask in plain language; it speaks grandMA3.
Read back macros, sequences, cues, presets by pool, and the full patch — hand Claude a show you inherited and ask what's in it. Reads are free and unlimited.
Describe the macro you want and get it line by line — twenty lines of pool-order drudgery in one go, or a single line edited in place.
Claude writes the Lua, runs it on the desk, reads the output back and fixes what didn't work. That loop is what turns plugin writing into something you can iterate on instead of guess at.
Before you download, the short list of what GrandPA expects.
Mac: Monterey and up, Apple Silicon & Intel, signed and notarized. Windows: 10 or 11, 64-bit, signed installer, no admin rights needed.
Running on the same machine as GrandPA. It talks to the console over OSC via a small plugin.
Billed separately by Anthropic and not included in the license price.
Try it free, buy a license when you're ready for unlimited use.
100 write commands included, no account or payment required. Reads are always free.
Unlimited commands, valid on one machine, free updates for the life of the license. No subscription.
Your key appears on screen and lands in your inbox the moment payment clears. Same app as the trial — the key just lifts the limit.
GrandPA also requires Claude Desktop and a Claude subscription — billed separately by Anthropic and not included in the license price. Purchases of GrandPA are handled by our reseller Paddle. See the Terms of Service for the refund policy.
Install Claude Desktop, then GrandPA. First launch registers GrandPA with Claude, copies the read-back plugin into grandMA3, and walks you through what's left — enabling OSC input in onPC, loading the plugin, and restarting Claude.
Then open a copy of a show file and ask: "What's in this patch, and which cuelists use it?"
The things people ask before they buy.
A Mac running macOS 12 or later or a PC running Windows 10 or later (64-bit), grandMA3 onPC running on that same machine, and Claude Desktop signed in to a Claude subscription. GrandPA is the bridge between the two — it doesn't include the console software or the AI, and your Claude plan is billed by Anthropic, separately from your GrandPA license.
Not today. GrandPA is an MCP server, so in principle any MCP-capable client could drive it — but right now it's built, tested and supported against Claude Desktop only, and that's the only setup we can promise works. Wider client support may come later.
Yes. GrandPA runs on Windows 10 and later (64-bit) as well as macOS — grab the Windows installer from the top of this page. It installs for your user only and doesn't need admin rights.
The first time you run it, Windows SmartScreen may say "Windows protected your PC": click More info, check the publisher reads Duolike AS, then Run anyway. Your license isn't tied to a platform — the same key works on either, one machine at a time.
GrandPA talks to the copy of grandMA3 running on the same machine — that part doesn't change. You can join that machine to a multi-user session with a console, and edits GrandPA makes will reach it live.
But that's not what it's built for. GrandPA is a prep and programming tool: work through a local copy of your show file on your computer, then take the finished file to the desk. Driving or editing a live show through a session is at your own risk.
100 write commands, no account and no payment. Reads — inspecting the patch, cues, macros, the programmer — are always free and never counted, so you can point Claude at a real show file and see what it makes of it before spending anything.
Straight away, on the spot. Checkout shows your license key on screen and emails you a copy, and the download is right here on this page — install the app, open GrandPA from its icon (menu bar on a Mac, system tray on Windows) and click Activate License on its License tab, then paste the key. It's the same build as the free trial, so if you already installed it during the trial, just paste the key and the limit disappears.
$99 once. $59 once until the end of 4 October, down from $99. Unlimited commands on one machine, free updates for the life of the license, no subscription and no renewal. Moving to a new machine? Click Deactivate License in GrandPA on the old one to free the seat, then activate with the same key on the new one — a new laptop doesn't cost you a new license.
That's the design goal. Destructive commands
(Delete, Remove, Overwrite)
need explicit confirmation, batches validate before anything is sent,
and a read-only mode blocks every write for
inspection-only sessions. Every single command GrandPA sends is written
to a command log you can read in the app.
Work on a local copy of the file, the way you would in any other prep session — that's the workflow GrandPA is designed around. Using it to run or edit a live show is at your own risk.
Your key is always retrievable from the license page — click "retrieve your key" and we re-send it to the email you bought with. Refund terms are in the Terms of Service; if something's wrong, email support@teamduolike.com.