Mainstream: Transfer Data

Send files by camera, offline

Free · Designed for iPad. Not verified for macOS.

Move photos, videos, files and Wi-Fi passwords between phones with nothing but the screen and the camera. No network, no pairing, no account. Mainstream sends data from one phone to another as an animated colour code. One phone shows the code, the other points its camera at it, and the transfer starts on its own. It works with no Wi-Fi, no mobile data and no Bluetooth pairing, so it works in airplane mode, abroad, underground or anywhere two phones can see each other. Send almost anything: • Photos and videos from your library, or a new photo • Audio recordings • Any file from Files • Text, with one-tap paste • A contact card • A Wi-Fi network, which the other phone can join with one tap • Your current location Mainstream also appears in the share sheet, so you can send straight from Photos, Safari, Files and other apps. Built for real conditions: • A live gauge shows how much has arrived and the current speed, and whether the sender can go denser or should back off • Error correction and a fountain code mean missed frames only cost time, never the transfer • Pinch to zoom, tap to focus, or set focus by hand, including macro on phones with a close-focusing ultra-wide camera • On supported iPhones, read with two cameras at once • Payloads are compressed before sending, and photos and videos can be shrunk further with one tap

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The developer, Richard Russell, 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 Not Collected

    The developer does not collect any data from this app.

    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
    Richard Russell
    Size
    1.4 MB
    Category
    Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Henry Russell, Noah Puckett, and Sebastian Odenius
  • Privacy Policy

    • More by Richard Russell