---
title: "Mergius: HDR Photo & Tone map — App Overview"
url: https://marlvel.ai/intel-report/photo-video/mergius-hdr-photo-tone-map
category: Photo & Video
developer: Roman Sisik
platforms: ios
rating: 1.0 (2 ratings)
pricing: free
report_level: overview
generated: 2026-04-23
---

<!-- SECTION: Key Insight -->
> **Key Insight:** While the app offers professional-grade HDR processing tools, current user feedback indicates critical issues with the export functionality.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Photo & Video |
| Rating | 1.0 ★ (2) |
| Pricing | free |
| Platforms | iOS |
| Latest Version (iOS) | 1.5 |
| Developer | Roman Sisik |

<!-- SECTION: Summary -->
## What is Mergius: HDR Photo & Tone map?

Mergius is a photo editing tool designed to merge multiple exposures into High Dynamic Range (HDR) images using professional algorithms. It provides advanced tone mapping and native support for industry-standard formats like OpenEXR and Radiance, catering to photographers and VFX artists.

<!-- SECTION: Key Features -->
## Key Features

- **HDR & Exposure Fusion**: Combines multiple exposures using Robertson, Debevec, or Mertens algorithms.
- **Automatic Image Alignment**: Ensures sharp, ghost-free results for handheld photography.
- **Pro File Support**: Enables native editing and export of OpenEXR and Radiance HDR files.
- **Advanced Tone Mapping**: Offers multiple operators including Reinhard, Drago, Mantiuk, Linear, and Normalize.

<!-- SECTION: Target Audience -->
## Who is it for?

Professional photographers and VFX artists requiring precise HDR fusion and tone mapping workflows.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/mergius-hdr-photo-tone-map/id6749581377?uo=4)
- [Full Intelligence Report](https://marlvel.ai/intel-report/photo-video/mergius-hdr-photo-tone-map)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/photo-video/mergius-hdr-photo-tone-map).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*