Isolux

Pop one color, grey the rest

Only for iPhone

Free · In-App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Isolux makes one colour pop while turning everything else to greyscale — in seconds, entirely on your device. Pick a photo, drag the colour wheel to the hue you want to keep, and watch the selective colour effect appear in real time. Tap a preset (Red, Orange, Gold, Green, Sky, Purple) for instant results. Adjust the range slider to widen or narrow the preserved colour band. Toggle before/after to compare. Share directly to any app. Every step runs locally — no account, no cloud upload, no internet required. Includes: • Tactile colour wheel with drag-to-select hue • Six one-tap presets • Adjustable hue range • Real-time preview • Before/after comparison • Edit history • Share via any app Pro (one-time unlock): • Batch — process up to 20 photos at once with the same settings • Save to Photos at full original resolution • Unlimited edit history

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The developer, 永 张, 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

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

    Provider
    • 永 张
    Size
    • 656.4 KB
    Category
    • Photo & Video
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    • Mac
      Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.0 or later.
    Languages
    • English and Simplified Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • Copyright © 2026 Peter Zhang. All rights reserved.