Most double-exposure apps lean on blending modes: Screen, Multiply, Overlay. They're quick, but they push the result toward a look you've seen a thousand times.
Flattr takes a flatter route. It merges multiple photos without blending modes, so the result keeps natural tones instead of an artificial, over-processed glow.
What that means in practice
- Natural results: multiple exposures that still read as photographs
- Real-time preview: see the merge update as you adjust it
- Full quality: the original detail is kept, with no compression during the merge
- On device: nothing is uploaded, nothing is collected, and it works offline
Where it shines
Creative portraits, layered landscapes, architecture and experimental work. Anywhere you want two images to share one frame without either one shouting.