How can we help?

Yes. The app is free to download and use across every editor. AI and a few add-on features draw on your monthly allowance — every account gets a free one, and you can buy more or subscribe if you need a larger allowance. See the pricing page for details.

By default, no. LumenQube is local-first: the files you open and edit live on your device and aren't uploaded in the background. Content is transmitted only when you choose a cloud feature—such as AI, sharing, web publishing, a connector, or a support report with attachments—and only the content needed for that action. Our Privacy Policy explains what each feature sends and where.

LumenQube shows AI usage as a percentage of your month, so there is no unit to learn. Your free monthly allowance refreshes on a regular cycle and does not roll over. A purchased top-up stays available subject to our Terms of Service. Allowances have no cash value and are non-transferable.

Published installers are available for macOS (Apple Silicon and Intel), Windows (x64 and ARM64) and Linux. The download page shows current release availability.

The app checks for updates and will let you download and install the latest version. Some releases may be marked required for security or compatibility, in which case you'll be prompted to update before continuing.

On the sign-in screen, choose Forgot password? We'll email a 6-digit code to your account address so you can set a new password. If you don't receive it, check spam or contact support@lumenqube.com.

The fastest way is from inside the app: press ⌘K or use the Help button to file a report — relevant diagnostic logs are attached automatically so we can investigate. You can also email support@lumenqube.com.

You can cancel anytime; access continues to the end of your current billing period. For refunds or a charge you don't recognize, email support@lumenqube.com and we'll review it in good faith. See Cancellation & refunds.

Data in transit is encrypted with TLS. Shared and published documents are encrypted at rest on our servers with server-managed keys; they are not end-to-end encrypted. On your device, sensitive local data such as notes and audio can be encrypted at rest using your operating system's secure keychain. Details are in the Security Centre.

LumenQube uses commercial/API AI offerings whose inputs and outputs are not used for model training by default. Provider retention and application state vary by feature and provider. See how AI features handle your content.

Email privacy@lumenqube.com from your account address and we'll delete or de-identify your personal information, except records we must keep to meet legal obligations. Files stored only on your device stay under your control.

Please email security@lumenqube.com with the details. We appreciate responsible disclosure and will work with you to investigate and resolve it.