Koloristika’s Monolith mode claims to construct monochrome RAW data from the camera sensor pipeline instead of simply desaturating a finished color photo. The developer describes 16-bit output, simulated color filters and a deliberately film-oriented approach.
The App Store release notes describe the Monolith feature and the developer’s site explains the processing philosophy. An independent photography report notes a 36-photo trial and subscription pricing, but verify current App Store terms before purchasing.
For a useful test, photograph a textured building, portrait or high-contrast street scene with both Monolith and the native iPhone camera. Compare highlight roll-off, fine textures and edit latitude. Treat claims about sensor processing as developer claims until the files are inspected.