Kvadrat Six

Light meter for medium format

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

A light meter built for 6×6, not adapted to it. Hand-holdable shutter speeds, apertures through f/45, real stops only. Tested against a professional handheld meter. Your medium format body has no meter. Or the prism that came with it died in 1997. Kvadrat Six turns your phone into a light meter built for the way you actually shoot. Set your film speed, tap measure, and get your EV reading along with an aperture and shutter pairing you can dial straight into your lens. Built for medium format — recommendations favor shutter speeds fast enough to hand-hold a heavy body with a slapping mirror. Apertures run through f/45, because medium format lenses stop down further than 35mm glass. Real stops — every value lands on a stop your lens can physically dial. No f/6.3 when your barrel only clicks at f/5.6 and f/8. ISO and EI — set box speed or rate your film wherever you want it, in third-stop increments. How it works — Kvadrat Six uses reflected metering through your phone's rear camera. Point it at your scene the way you'd aim a reflected-light meter. Tested against a professional handheld meter and the leading iOS meter across eight stops of light. No account. No subscription. No data collected.

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

The developer, Brighter Side Digital Labs, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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    Information

    Seller
    Brighter Side Digital Labs LLC
    Size
    3.2 MB
    Category
    Photo & Video
    Compatibility
    Requires iOS 26.5 or later.
    • iPhone
      Requires iOS 26.5 or later.
    • Mac
      Requires macOS 26.5 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.5 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © Brighter Side Digital Labs
  • Developer Website
  • Privacy Policy