Privacy Policy

Last updated: June 2026

Konstrukt is made by Numerical. We designed it to keep your music and your data on your device. This policy explains what is — and isn't — collected when you use the app.

What we collect

Konstrukt does not require an account and does not collect personal information for its core features. Your patches, surfaces, presets and settings are stored locally on your device.

MIDI and audio

The app processes MIDI from your keyboards, controllers, hosts and other apps in order to function. This MIDI data is processed on-device and is not transmitted to us.

Network

Konstrukt does not require an internet connection. Your patches and settings are not uploaded to Numerical or any third-party service as part of normal use.

Mailing list

If you subscribe to the release-notes mailing list on this website, your email address is stored by Buttondown, our email provider, and used only to send occasional Konstrukt release announcements. Signup is double opt-in — you must confirm the address before anything is sent. Every mail carries a one-click unsubscribe link, and we do not sell, rent or share the list. This is entirely separate from the app: subscribing is not required to use Konstrukt, and the app itself never asks for your address.

Diagnostics

If you install the app from the App Store, Apple may provide us with aggregate, anonymized crash and usage statistics in accordance with your device settings. You can control this in your Apple privacy settings.

Children's privacy

Konstrukt is a general-audience music tool and is not directed at children under 13. We do not knowingly collect personal information from children.

Changes

We may update this policy as the app evolves. Material changes will be reflected on this page with a new "last updated" date.

Contact

Questions about privacy? Email hello@numericalaudio.com.