Celvion Stack

Build a stronger image from a sequence of photos, right on your iPhone or iPad. Celvion Stack brings importing, frame review, alignment, stacking, editing, and export together in one on-device workflow. SIX WAYS TO STACK • Night scenes: combine exposures to reduce random noise while retaining natural detail. • Milky Way: align the sky separately from the foreground for sharper stars and a stable landscape. • Light trails: blend selected frames into continuous trails. • Smooth water and clouds: create a softer motion effect from a sequence. • Moving distractions: reduce the impact of people, vehicles, and other elements that appear in only some frames. • Landscapes: combine aligned frames for a cleaner result. CONTROL YOUR MILKY WAY STACK Choose a reference frame, review frame quality, adjust sky and foreground masks, and inspect which frames are included. These controls help you adapt the result to your source images. SUPPORTED RAW AND EVERYDAY PHOTOS Import supported RAW/DNG files and standard photos. RAW compatibility depends on the camera file and the available decoder. Lens correction applies geometric distortion profiles when a supported profile or embedded calibration matches; automatic vignetting and chromatic-aberration correction are not included. ON-DEVICE AI TOOLS Use optional AI denoising and up to 4× super-resolution on supported iPhone and iPad devices with iOS or iPadOS 18 or later. Results depend on the source image. Core stacking workflows require iOS or iPadOS 17 or later. FULL-RESOLUTION EXPORT Export as JPEG, PNG, 16-bit TIFF, or 10-bit HEIF. Choose available color-space and DPI options, then save locally to Files or, where supported, Photos. YOUR PHOTOS STAY ON YOUR DEVICE Photo processing runs on your device. The app does not upload your source photos for processing.