Gain Map HDR Converter
Turn any photo into real HDR
$3.99 · Designed for iPad. Not verified for macOS.
Your display can show far more light than your photos ever use. Gain Map HDR puts it to work — real HDR, on device, in seconds.
Your display can show far more light than your photos ever use. Gain Map HDR puts it to work.
Every photo on your iPhone was captured with a range of brightness that standard displays simply clip away. Gain Map HDR rebuilds that range and writes it as a true HDR gain map, so highlights glow on your iPhone, iPad and Mac — while the image still looks right everywhere else.
HOW IT WORKS
- Import from your photo library or from Files
- Choose HDR or GLOW and dial in the exact intensity
- Compare against the original at any time
- Save back to Photos or export to a folder
BUILT ON STANDARDS
- True ISO 21496-1 gain map — the open HDR standard, not a filter
- 10-bit HEIF output for smooth gradients with no banding
- Display P3 wide-gamut color
- Graceful fallback: on non-HDR screens your photo looks exactly as it should
MADE FOR PHOTOGRAPHERS
- Author, copyright, IPTC and GPS metadata preserved
- Batch processing for entire shoots
- 4:5 crop, ready for social
- Full-width editing in landscape, with every control in reach
PRIVATE BY DESIGN
Everything happens on your iPhone. No cloud processing, no account, no uploads. Your photos never leave your device.
Gain Map HDR doesn't invent detail or push saturation. It rebuilds the brightness range your camera already captured, and writes it in the format Apple devices are built to read.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Expanded compatibility — the app now runs on iOS 18.6 and iPadOS 18.6 or later
- Storage management — a new "Manage data" screen in Settings shows how much space the app is using and clears working files with one tap
- Faster batch processing — smoother progress and better memory handling when converting many photos at once
- Refined editor layout — a larger preview in portrait, with the controls repositioned around it
The developer, MARCELO PITZ ESPINDOLA, 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
- MARCELO PITZ ESPINDOLA
- Size
- 6.9 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Inphovid
