# Gain Map HDR Converter — Turn any photo into real HDR

> Rebuilds photo brightness range into true HDR gain maps. (iPhone/iPad app by MARCELO PITZ ESPINDOLA.)

- Source: https://appshunter.io/ios/app/gain-map-hdr-converter/id6794502526 (this page in markdown: same URL + `.md`)
- Developer: [MARCELO PITZ ESPINDOLA](https://appshunter.io/developer/1820969307)
- Category: Photo & Video, Graphics & Design
- Price: $3.99
- Age rating: 4+
- Requires: iOS 18.6 · 7 MB
- Languages: American English
- Released: 2026-08-06
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/gain-map-hdr-converter/id6794502526/reviews.md

## What is Gain Map HDR Converter?

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.

## Key features

- Create true HDR gain maps
- Preserves metadata
- Batch processing
- 10-bit HEIF output
- Supports Display P3 color
- Private by design

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/gain-map-hdr-converter/id6794502526/reviews.md

### 5/5 — Maravilhoso app

*2026-08-07*

Super funcional, minhas fotos ficaram lindas!!!!

## Frequently asked questions about Gain Map HDR Converter

### What is Gain Map HDR Converter?

Gain Map HDR Converter is a paid app that rebuilds the brightness range of your photos to create true HDR gain maps. It allows highlights to glow on compatible devices while ensuring the image looks correct on standard displays.

### How much does Gain Map HDR Converter cost?

Gain Map HDR Converter is a paid application with a one-time purchase price of $3.99. There are no in-app purchases or subscriptions.

### Does Gain Map HDR Converter have ads?

No, Gain Map HDR Converter does not contain advertisements. It is a paid app designed to be ad-free.

### What devices is Gain Map HDR Converter available on?

Gain Map HDR Converter is available for iPhone and iPad devices. It is designed to leverage the display capabilities of Apple hardware.

### How often is Gain Map HDR Converter updated?

The latest version of Gain Map HDR Converter is 1.1, which was released on August 10, 2026. Updates are provided by the developer, Marcelo Pitz Espindola.

### Is Gain Map HDR Converter safe for all ages?

Gain Map HDR Converter has an age rating of +4, indicating it is suitable for users aged four and older. The app focuses on photo editing and does not contain inappropriate content.

### Does Gain Map HDR Converter process photos in the cloud?

No, Gain Map HDR Converter is private by design and all processing happens on your device. Your photos never leave your iPhone or iPad, and no account or uploads are required.

### What HDR standard does Gain Map HDR Converter use?

Gain Map HDR Converter is built on the true ISO 21496-1 gain map standard, which is an open HDR standard. It is not a simple filter but a reconstruction of the captured brightness range.

## Version history (last 2 releases)

### 1.1 — 2026-08-10

- 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

### 1.0 — 2026-08-06

No release notes.

## More apps by MARCELO PITZ ESPINDOLA

- [Dare Your Mind](https://appshunter.io/ios/app/dare-your-mind/id6770318010)

All apps by MARCELO PITZ ESPINDOLA: https://appshunter.io/developer/1820969307

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*