Privacy Policy

Product: Audio Visualizer for Windows (Stream Deck plugin for Windows) · Provider: GRAMSHIFT (Tokyo, Japan) · Last updated: 2026-10-13

Summary

The plugin listens to what your PC plays through a sound output (the default one, another one that plays, or the one you choose) or, with Elgato Wave Link 3, to a Wave Link mix, measures it in memory to draw a picture on your Stream Deck keys, and forgets it. It records nothing, saves no sound, and sends nothing to us or to anyone. It has no account, no online service, no analytics and no telemetry, and it makes no network requests of its own.

How it hears the sound, in plain words

Windows offers every program a copy of what each sound output plays (called "loopback capture", part of the Windows audio system WASAPI). The plugin opens that copy for one output at a time (two for a moment while it changes) in a small separate process of the plugin (file bin/loopback.cjs). Nothing is installed: no driver, no virtual device.
It keeps only the last fraction of a second of sound in memory (about 40 milliseconds), and from it, a few times per second, works out how loud each range of notes is, the shape of the wave, the left and right level and whether a beat just hit. Only those numbers reach the part of the plugin that draws the keys. The sound itself is overwritten moment by moment and is never written to a file.
It listens only while at least one Visualizer key is on the screen and the plugin is not paused. With no Visualizer key showing, or while paused, the process is ended.
Elgato Wave Link 3. Wave Link 3 offers its mixes (Personal Mix, Stream Mix, Chat Mix) to Windows as recording devices. When Wave Link 3 is installed, Auto reads the Personal Mix, or the mix you choose, the way a recording app reads a device: the same last fraction of a second in memory, the same few numbers, nothing written to a file. It reads recording devices only when they are named as Wave Link's mixes (Personal Mix, Stream Mix or Chat Mix of Elgato); it does not open other recording devices. A mix can include your microphone if you routed it into that mix in Wave Link; that sound, too, is only used to draw the picture and is never recorded or sent. Because Windows treats the mixes as recording devices, Windows may show its microphone icon while the plugin reads one, and Windows' microphone permission for desktop apps applies; if Windows blocks it, the keys may not move from the Wave Link mix, and you can choose your output in Listen to.
With Listen to: Auto, while the first one is quiet it looks at the level meters of your other outputs (the same meters Windows Sound settings shows) to find the one that plays; a meter is a single loudness number. To see which output plays, it may also read an output for a short moment (up to about 1.5 seconds). Nothing from these reads is kept or recorded.
It reads the names of your sound outputs (for example "Speakers") to list them and show the one it follows on the settings page. It never changes your volume, mute or default device, and changes no other Windows setting.
It talks only to the Stream Deck app on the same PC, through a local connection (127.0.0.1) that the Stream Deck app provides to every plugin.

Where data goes

Data	Where it is processed	Stored by the plugin?
Sound that your PC plays (or a Wave Link mix carries)	In memory on your PC, while a Visualizer key is on the screen	No. Only the last fraction of a second is kept, and it is overwritten continuously.
Names and level meters of your sound outputs; names of Elgato Wave Link's mixes	Read from Windows on your PC	No (shown on the settings page while it is open).
The output you choose in Listen to (its Windows ID and name)	Saved by the Stream Deck app in its plugin settings on your PC	Yes, on your PC only.
Settings (effect, colors, frames, sensitivity, motion, key press, when quiet, listen to, paused)	Saved by the Stream Deck app in its plugin settings on your PC	Yes, on your PC only.
Technical log	The Stream Deck plugin framework writes a small log file (mainly connection errors) in the plugin's folder on your PC. The plugin writes no sound into it.	On your PC only.
Anything sent to GRAMSHIFT servers	—	Nothing. The plugin has no server of its own and makes no network requests of its own.

Purchases

The plugin is sold on the Elgato Marketplace. Purchases, payments and licenses are handled by Elgato (Corsair) and its payment provider under Elgato's own terms and privacy policy. GRAMSHIFT never receives card details. If Elgato provides us with sales records (for example the date, country and amount of a sale), we use them only for accounting and tax.

Support requests

If you contact us, we receive what you choose to send (for example your email address, your message and any screenshots). We use it only to answer you. Email to contact@gramshift.com is forwarded by our email forwarding provider (ImprovMX) to a mailbox hosted by Google (Gmail), so those providers process support emails on our behalf.

Our role and legal basis

The plugin works only as a tool on your own computer: GRAMSHIFT does not receive or process anything from it. For sales records and support emails, GRAMSHIFT is the controller. We rely on our legitimate interest in answering requests and on legal obligations (for example tax records). GRAMSHIFT is based in Japan, so this information is processed in Japan and by the providers named above.

Your rights

You can ask us to access, correct or delete personal information we hold about you, or object to its use, by emailing contact@gramshift.com. If you are in the EEA or the UK, you can also complain to your local data protection authority.

Retention and deletion

The plugin keeps nothing of its own except its settings and log file, and they are stored on your PC only. Support emails are kept only as long as needed to handle the request and meet legal obligations; you can ask us to delete them. Sales records are kept for up to 7 years for accounting and tax.

Changes

If the plugin ever starts to send or store other data, this policy will be updated before that change is released, and the date above will change.

Contact

GRAMSHIFT · contact@gramshift.com · 1-10-8 Dogenzaka, Shibuya Dogenzaka Tokyu Bldg 2F-C, Shibuya-ku, Tokyo 150-0043, Japan