Duet — Offline File Transfer

Private QR transfer, no cloud

Free · Designed for iPad. Not verified for macOS.

Move files, Wi-Fi, contacts and 2FA between phones — encrypted, over QR or your local network. No account, no ads, no tracking. It just works. Duet sends what matters from one phone to another — and gets out of your way. Pick a file, a contact, a Wi-Fi password, a 2FA setup code, or any text. The sender shows a QR code; the receiver scans it. For larger files, the two phones connect directly over your local network. Everything is end-to-end encrypted, and nothing ever touches a server. No account. No sign-up. No ads. No tracking. No cloud. WHY DUET • Reliable by design — built to finish the transfer, every time. • Truly private — your data goes phone-to-phone, never through us. We can't see it because it never reaches us. • Zero clutter — no ads, no upsells, no “create an account” wall. WHAT YOU CAN SEND • Files of any kind — documents, photos, videos, archives. Streamed directly, so size isn't a problem. • Wi-Fi credentials — share your network without reading the password aloud. • Contacts — send a contact card that drops straight into the other phone. • 2FA / authenticator setup codes — move your TOTP seeds to a new phone. • Plain text and links. HOW IT WORKS • Small items travel in a single QR code — scan and done, no network needed. • Larger items use animated QR or a direct local-network link between the two phones. Your data stays on your local network; it never goes to the cloud. • Every transfer is encrypted end-to-end. For the local-network mode, both phones show a quick visual match-check first, so you know there's no one in the middle. PRIVACY YOU CAN VERIFY • Data Not Collected. No analytics SDKs, no ad SDKs, no trackers. • No internet connection is used to move your data. • Transfer contents are never written to permanent storage. Duet is free, and it stays free. No subscriptions, no “pro” paywall on the core transfer.

Ratings & Reviews

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What's new in 1.2 • Share to Duet — send a photo or file straight from Photos, Files or any app: tap Share, pick Duet. • Files first — the Send screen now leads with file & folder sharing. • A smoother finish screen and better large-text support. Still end-to-end encrypted. No account, no tracking, no cloud.

Version 1.2

The developer, MICHAL DOMINIK GIZA, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • MICHAL DOMINIK GIZA
Size
  • 38 MB
Category
  • Utilities
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
16+
Copyright
  • © @2026 Majksquare
  • Developer Website
  • Privacy Policy

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