Culla is a fast photo culling app for Mac, iPhone and iPad, made for photographers who come home with thousands of frames. Open a memory card, an external disk or a folder and start right away: there's nothing to import and no catalog to build. One key or tap to reject, one to tag, and the next photo is already on screen. Smart Cull, Culla's on-device AI, does the first pass. It takes out blurry and badly exposed shots and near-duplicates, and tells you which frame of a burst came out better. You decide how many photos stay. Tags become XMP star ratings and color labels, so Lightroom, Capture One, Photo Mechanic and darktable see your cull. The camera's files are never touched, and rejecting never deletes anything. One purchase covers Mac, iPhone and iPad. No subscription, no account, no tracking: your photos never leave your device. Website and user guide: https://getculla.com