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.
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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- 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.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Sustain Support $12.99
- Continue Support $4.99
- Copyright
- © 2026 Inner Circle