HDR Photo & Tone map - Mergius

Content rating
Everyone
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Boost your gaming experience with HDR Photo & Tone map - Mergius. Crafted by Roman Sisik under APPzone, this tool is absolutely amazing. Learn more details through Photography.

Complete Overview Of The Application HDR Photo & Tone map - Mergius

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
Merge photos with different exposures into HDR & apply tone mapping
Updated on
Aug 9, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    about how developers declare sharing
  • This app may collect these data types
    App activity, App info and performance, and Device or other IDs
  • Data is encrypted in transit
  • Data can’t be deleted

Ratings and reviews

68 reviews
Phil Milnes
July 5, 2026
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.
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Vineet Kumar
May 30, 2026
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.
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Freja Kans (Lonewolf123414[IKEA])
May 15, 2026
does not warn you what fetures are pro and throws a notif that you can't close for a few seconds every time you click something that apparantly is pro
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What’s new

- Added deghosting option
- Made some more significant changes in how "Fusion" mode works, and allowed to apply post processing effects
- Moved the output format and resolution selection at a later stage, so that it's possible to export/save different formats, resolution, post processing effects faster
- Some minor UI/UX improvements
- Upgraded to target SDK 36