Grejn

Customizable preset camera app

Only for iPhone

Free · In-App Purchases

iPhone

Capture in Apple ProRAW, choose your lens, adjust exposure, and build your own photo look with precise controls and reusable presets. Grejn is built for photographers who want more control from the iPhone camera. Capture in Apple ProRAW, choose the lens that fits the shot, adjust exposure, and keep your workflow focused on image quality from capture to export. Fine-tune the look of every photo with detailed controls for contrast, highlights, shadows, clarity, sharpness, saturation, vibrance, white balance, color grading, HSL adjustments, bloom, vignette, and grain. Save your own presets, switch between looks quickly, and create a consistent visual style without leaving the app. Grejn also gives you practical controls that matter while shooting. Tap to focus, lock focus with a long press, choose quality or balanced capture priority, set maximum resolution, and export styled HEIF images in 8-bit or 10-bit. On supported devices and lenses, you can also save the original RAW DNG separately for more flexibility in post.

Ratings & Reviews

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* Added live preset preview for faster look selection (lower resolution for older devices to process) * Improved the lens picker and added more lens options, including 20mm and 1.5x tele crop * Added deeper tone controls: Whites, Blacks, White Fade, and Black Fade * Expanded color grading with improved tonal shaping and better midtone control * Improved HSL behavior for more consistent color adjustments across the full tonal range * Redesigned preset workflow with easier preset selection and custom preset colors * Refined the effects editor for faster, cleaner editing * General UI polish, stability improvements, and bug fixes

Version 1.1

The developer, David Mismas, 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 based, for example, 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

    • Provider
      • David Mismas
    • Size
      • 7.8 MB
    • Category
      • Photo & Video
    • Compatibility
      Requires iOS 26.2 or later.
      • iPhone
        Requires iOS 26.2 or later.
    • Languages
      • English
    • Age Rating
      4+
    • In-App Purchases
      Yes
    • Copyright
      • © David, 2026
  • Privacy Policy

    • More by David Mismas