Flattr: Exposure Blend & Merge
Double Exposure, Fusion & RAW
About
Create perfectly balanced photos by merging multiple exposures using advanced GPU exposure fusion. This app allows photographers to stack, overlay, and combine bracketed shots for natural-looking results without filters or subscriptions. Export in TIFF or JPEG formats.
What's New in Flattr
1.2.5
June 28, 2026
What's New in Flattr 1.2.5 • Sharper, more natural translations in every supported language • Bug fixes and performance improvements Thanks for using Flattr.
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FAQ
What is Flattr's primary function?
Flattr's primary function is to merge multiple exposures into a single, perfectly balanced photo using real GPU exposure fusion. It's designed for photographers who bracket exposures and want natural-looking results without applying filters.
Does Flattr support RAW files?
Yes, Flattr supports RAW (.DNG) files as input, allowing for a full RAW workflow. It also supports JPEG inputs and exports in TIFF format for maximum quality.
How does Flattr compare to filter-based photo apps?
Unlike many photo apps that use tone-curve filters, Flattr performs real exposure fusion. It computes weight maps per pixel to blend exposures through a Laplacian pyramid, resulting in a natural look that mimics how the human eye perceives a scene.
Can Flattr align handheld bracketed shots?
Yes, Flattr features auto image alignment using the Vision framework. This allows handheld bracketing sequences to be aligned automatically before blending, ensuring seamless results even without a tripod.
What export options does Flattr offer?
Flattr offers export in TIFF format for a full RAW workflow, compatible with editors like Lightroom and Darkroom. It also exports in high-quality JPEG format.
Is Flattr available on multiple devices?
Flattr is supported on iPhone and iPad devices, making it accessible for mobile photographers on the go.
How often is Flattr updated?
Flattr was last updated on June 28, 2026, indicating recent development and support. The latest version is 1.2.5.
Does Flattr have ads?
No, Flattr does not contain advertisements. The app is completely free and does not include any ads.
