Undertone Tuner

Reduce Redness, Keep Skin Tone

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Remove redness from fresh tattoo photos instantly. Undertone preserves your natural skin tone using advanced color science — all processed on-device, 100% private. Undertone is a precision tool for tattoo artists and clients. Fresh tattoos often come with redness and inflammation that can distract from the actual work. Undertone removes that redness while keeping the skin tone and tattoo detail intact. How it works: Select or take a photo of a fresh tattoo. Paint over healthy skin near the tattoo to set a reference tone. Tap Apply. Undertone uses Lab color space analysis to neutralize redness across the image. Fine-tune with Strength, Threshold, and Brightness sliders. Use the Exclude brush to protect specific areas from correction. Save the final image at full camera resolution. Why Undertone: Maintains natural skin tone with precision color math Works with all skin tones Full-resolution export: no quality loss 100% on-device processing. Your photos are never uploaded No accounts, no ads, no tracking Pinch to zoom for detailed work Undo support and before/after toggle Works on iPhone and iPad Built by a tattoo artist, for tattoo artists.

  • 5.0
    out of 5
    2 Ratings

NEW ALTERNATE COLOR MODE Skin Vector mode - a second correction mode that follows the natural direction skin shifts in color space, rather than just reducing the a* channel Haptic feedback - light tap when brightness crosses zero UI / UX changes Image on Paint step (#2) is centered both axes; Adjustments step (#3) goes full-width, top-anchored.

The developer, Inner Circle, 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

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

    Seller
    • David Allen
    Size
    • 32.1 MB
    Category
    • Photo & Video
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPad
      Requires iPadOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 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
    4+
    In-App Purchases
    Yes
    • Sustain Support $12.99
    • Continue Support $4.99
    Copyright
    • © 2026 Inner Circle