MESA does not collect, store, transmit, or share any personal data. Everything you make — presets, shaders, samples — stays on your device, or in your own iCloud account, and nowhere else.
Introduction
MESA is made by Temperamento, a small independent studio (Juan Maguid), for iOS, iPadOS, and macOS. This policy covers the MESA app — the AUv3 plug-in and the standalone app, built from the same codebase.
Information Collection
Nothing. MESA does not collect any personal information or usage data. There is no analytics SDK, no crash reporter, no device identifier collection, no location tracking, no cookies, and no advertising ID — inside the app.
About this website: this marketing site (the pages you're reading right now, separate from the app) uses Google Analytics for basic traffic stats — page views, referrers, rough geography. It's standard cookie-based web analytics, and it has nothing to do with the app itself or anything you create in it. The tracking is on these web pages only — none of the Temperamento apps (MESA, FUJI, VKO1) contain any analytics, telemetry or tracking whatsoever.
User Content
Shaders you import, samples you load, and presets you save stay exclusively on your device. MESA is sandboxed and only reads a file when you explicitly pick it via the import panel, and only writes a file when you explicitly export or save one — nothing is uploaded anywhere, and nothing is shared with third parties.
iCloud Sync
MESA can sync presets and custom shaders across your own devices using Apple's iCloud Documents. This is Apple's infrastructure, tied to your Apple ID — Temperamento has no access to it, no server sits in between, and it only moves data between devices signed into the same iCloud account.
Local Network & MIDI
Ableton Link (standalone Mac app) syncs tempo and beat with other Link-enabled devices on the same local Wi-Fi network, using Apple's official LinkKit. It only ever broadcasts on your local network — no data leaves it, and nothing reaches Temperamento.
Bluetooth MIDI controllers connect directly to your device over standard MIDI (notes, CC, pitch bend) — a local, device-to-device link with nothing transmitted off-device.
MCP Control
On the Mac standalone app, MESA can optionally run a local control server so an AI coding agent (like Claude Code) can write shaders and sculpt patches alongside you. This server is off by default, and when enabled it binds only to 127.0.0.1 — your own machine. It is never reachable from the network, and no data is sent to Temperamento or anyone else through it.
Microphone
iOS requires microphone permission for the audio session that hosts MESA's synthesizer engine. MESA does not record, store, or transmit microphone audio at any point.
Third-Party Services
No analytics, advertising, or data-collecting SDKs are integrated into MESA. The app doesn't talk to any Temperamento server, because there isn't one.
Data Storage
Presets, settings, and preferences are stored using standard iOS/macOS app storage on your device (and, if you enable it, your own iCloud container). None of it is accessible to Temperamento.
Children's Privacy
Because MESA collects no data at all, this applies equally to users of any age, including children under 13.
Policy Changes
Updates to this policy will appear on this page with a revised effective date. Given MESA's no-collection approach, substantive changes are unlikely — but if the app's data practices ever change, this page will say so plainly.