# Mergius: HDR Photo & Tone map — user reviews

> 2 indexed App Store user reviews of Mergius by Roman Sisik.

- Source: https://appshunter.io/ios/app/mergius-hdr-photo-and-tone-map/id6749581377/reviews
- App overview in markdown: https://appshunter.io/ios/app/mergius-hdr-photo-and-tone-map/id6749581377.md

## Most critical reviews (2 lowest-rated)

### 1/5 — Doesn’t work

*2026-03-02*

Kept crashing when I’d try to add photos

**Developer response:** I'm not able to replicate your issue on my devices. Can you provide more information? What was the format and size of the image files. What exactly did you tap inside the app? Were there any error messages? If possible, can you provide the image samples? You can reply directly to my email roman@sisik.eu

### 1/5 — Pretty Dismal

*2026-01-24*

Doesn’t export.

**Developer response:** Don't understand. Is the export to radiance hdr or OpenEXR not working for you? Can you provide more information about your issue? Is there an error message? What exactly are you trying to do? You can send information directly roman@sisik.eu. If I find any issues, I'll try to fix those as soon as possible.

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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 2026-08-12.*