Privacy Policy

Duet is published by Stackr Labs Incorporated (“we”, “us”), trading as Conscious Engines Studio. 251 Little Falls Drive, Wilmington, Delaware 19808, USA.

Contact: deepanshi@consciousengines.com

Your work lives in Duet’s storage on your iPhone:

• PDFs you import
• Highlights, Canvas cards, sticky notes, arrows and ink
• Voice notes you record
• AI answers you pin to your Canvas, and your reading position

We don’t sync this data to any server we run. If you use iCloud or device backups, Apple may include Duet’s data in those backups under Apple’s own privacy terms. If you delete Duet without a backup, your data can’t be recovered, because we never had a copy.

Duet’s AI is powered by Apple Intelligence. You choose which mode it uses in Settings:

• On device. Apple Foundation Models run entirely on your iPhone. Your document and questions never leave the device, and this mode works without an internet connection.
• Private Cloud Compute. For larger requests, the relevant parts of your document and your question are sent to Apple’s Private Cloud Compute. Apple uses that data only to fulfil the request and doesn’t store it. It isn’t accessible to Apple or to us. We don’t run any AI servers and we don’t use any third-party AI provider.

In both modes, we never receive your documents, your questions or the AI’s answers. You can read more about Private Cloud Compute in Apple’s privacy documentation.

Duet requires a one-time purchase to unlock. Apple processes the payment through your App Store account. We never receive your name, card details or billing address. Apple gives the app only a transaction record that confirms your purchase, so Duet can unlock and restore it. Apple’s privacy policy covers how Apple handles your payment.

We don’t ask for your name, email, phone number, location, contacts or photos. We don’t use advertising identifiers, analytics SDKs or tracking of any kind, and we don’t link anything you do in Duet to an identity.

• Files. Duet opens only the PDFs you choose to import or share into it.
• Microphone. Duet uses the microphone only when you record a voice note. Recordings are saved on your device.

You can change these permissions at any time in iOS Settings.

Duet’s widgets (Continue Reading, Highlights and Recent PDFs) read data stored on your device to show it on your Home Screen. They don’t transmit anything.

If you’ve chosen to share analytics with app developers in iOS Settings, Apple may send us anonymous crash reports. They contain technical information, such as the device model and iOS version, and none of your content. You can turn this off at any time in iOS Settings.

If you email us, we receive what you choose to send, such as your email address and message. We use it only to reply to you and delete it once your request is resolved.

Duet is suitable for all ages. Because we don’t collect personal information from anyone, we don’t knowingly collect personal information from children.

Depending on where you live (for example, under the GDPR or India’s Digital Personal Data Protection Act), you may have the right to access, correct or delete personal data. Because your Duet data is stored only on your device, you control it directly:

• Delete content by removing documents inside Duet.
• Delete everything by deleting the app.
• Ask us anything at deepanshi@consciousengines.com.

We don’t hold your content, so there is nothing for us to retain. We keep support emails only as long as we need them to resolve your request.

If we change this policy, we’ll update this page and the “Last updated” date. If we make a material change, such as starting to collect any data, we’ll let you know in the app before it takes effect.

deepanshi@consciousengines.com