HDR Photo & Tone map - Mergius

HDR Photo & Tone map - Mergius

Roman Sisik·FREE
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Screenshots

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Description

This app can be used to merge photos taken at different exposures into a single high density range (HDR) image. You can then use tone mapping with various tuning options to create the final image.
NOTE: If you think there's some issues with results the app is producing, send your sample input images with issue description directly to support email. I'll have a look it, and if I find issues, I'll certainly try to fix all of those. Don't use the review section for reporting issues - it has a strict character limit and doesn't allow structured replies and file/image attachments.

The app can also be used as HDR viewer - you can view Radiance HDR (.hdr) and OpenEXR (.exr) files.

Main features include
- Debevec, Robertson, and simple "Fusion" algorithms to generate HDR image
- automatic image alignment before merging into HDR
- export generated HDR file as Radiance HDR, or OpenEXR file
- tone mapping using various algorithms (Linear mapping, Reinhard, Drago, Mantiuk)
- creating tone mapped images in multiple formats, like e.g. JPEG, PNG

Developer

Roman Sisik

Developer ID: 9177152940126947746

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Recent Reviews

Solomon

Unfortunately the app did not perform well in producing a proper HDR image from the inputs, with the resulting image having strange coloration, plus the vast majority of features are locked behind a paid subscription, so won't be able to try much unless you pay first.

Sep 27, 2026

Febri Asmara (JasaVR)

v5.0

bahkan tidak ada kesempatan mencoba.. serba berbayar

Developer Response

Please stop lying. You can try ALL functionality during the free trial period, and the main HDR merging workflow is permanently free. Note that this app is not suitable for parasitic freeloaders who might try to find gullible developers to work for them for free.

Sep 27, 2026

Sep 26, 2026

José Barría

v5.0

almost all the features are behind a paywall. not worth it

Developer Response

Main merging workflow is free permanently and free trial allows to try all features. Note that this app is not suitable for parasitic narcissist freeloaders, who try to find gullible developers to work for them for free. The project needs to contribute to paying the bills, otherwise it gets abandoned. It's not a billionaire's free time charity.

Aug 28, 2026

Aug 28, 2026

Phil Milnes

seems like it would be really good, has lots of the right options. free version regularly means you click on options that are in the paid for version which is kind of expected... stacking images is limited to 3 images, my output image was very significantly worse than any of the input images. process was quick and free so give it a try, you may have more luck than me.

Jul 5, 2026

Vineet Kumar

The most annoying and retarded app ever. Every button press leads to a subscription page and to top that, the app doesn't even do much on its own. Your images don't even appear normal when you open them. God knows how you're supposed to see them.

May 30, 2026

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