AstroFinish vs Celvion Stack

AstroFinish is a darkroom for astrophotography on iPhone. It is built for the shots that come off smart telescopes, backyard rigs, and late-night moon sessions: the ones that are almost there, but need a cleaner sky and a better finish. Start fast with Auto Astro Polish, Deep Sky, Moon Sharp, and other built-in looks. Or dial it in by hand with controls made for space photos, including black point, glow cleanup, nebula reveal, galaxy detail, denoise, star reduction, and moon sharpening. Import from Photos or Files, work with JPEG, PNG, HEIC, TIFF, RAW-style images, and FITS sessions, then export finished images or shareable before/after cards. Batch Finish helps run one look across a queue when you came home with more than one keeper. AstroFinish stays local. No account. No cloud upload. No tracking SDKs. Your captures stay on your iPhone unless you choose to share or save them. Built for: Smart telescope captures Deep-sky photos, nebulae, galaxies, star fields, and moon shots Quick fixes when the sky glow gets rude Manual finishing when you want the last word FITS reveal and stack workflows Local exports, share sheets, and before/after cards AstroFinish is for people who would rather be outside collecting photons than fighting a desktop editor at 1 a.m.

Turn a sequence of frames into a cleaner, richer image—entirely on your iPhone or iPad. Celvion Stack gives photographers a complete local workflow for importing RAW/DNG or standard photos, inspecting frames, aligning, stacking, editing, and exporting without a computer. SIX PURPOSE-BUILT STACKING MODES NIGHT Combine multiple exposures to reduce random noise while preserving natural detail and color. MILKY WAY Align the sky and foreground separately so stars can remain sharp while the landscape stays stable. LIGHT TRAILS Blend selected frames into continuous, controlled light trails. SMOOTH WATER & CLOUDS Build a long-exposure look from a sequence, with smoother motion and flexible control. MOVING DISTRACTION REMOVAL Suppress people, vehicles, and other transient elements that appear in only part of the sequence. LANDSCAPE Merge aligned frames for a cleaner, more detailed landscape result. PRO MILKY WAY CONTROL Choose a reference frame, review per-frame quality scores, refine sky/foreground masks, and reject trails from aircraft and satellites, plus other intermittent light streaks, before stacking. RAW LENS CORRECTION When a matching lens profile is available, correct geometric lens distortion. Automatic vignetting and chromatic-aberration correction are not currently included. FULL-RESOLUTION EXPORT Export the final stack as JPEG, PNG, 16-bit TIFF, or 10-bit HEIF, then save it directly to Photos or Files. ON-DEVICE AI On supported devices running iOS 18, use local AI denoise and 4× super resolution. Core stacking works on iOS 17. PRIVATE BY DESIGN Processing stays on your device. Your photos are not uploaded.