Eagle Image Stacker vs RoboTou Stacker

Eagle Image Stacker is a local-first astronomy imaging toolkit for iPhone. Import or capture RAW, DNG, ProRAW, JPEG, HEIF, TIFF, and other supported image files, then align, calibrate, stack, inspect, and export high-quality results. Use Astro Mode for star fields, galaxies, nebulae, and deep-sky sequences. Use Planets Mode for Moon and planet workflows with ROI tracking and alignment tools. RAW Converter helps inspect and export camera files, while calibration tools support dark frames, flat fields, hot-pixel review, masks, and alignment analysis. The app is built for on-device processing. Your selected images and generated outputs remain local unless you choose to save, export, or share them through iOS. Some capture features depend on your iPhone hardware. RAW and Apple ProRAW availability varies by device. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Subscription Terms: https://sites.google.com/view/eis-subscription-terms/ Privacy Policy: https://sites.google.com/view/eagle-image-stacker-privacy2/

RoboTou Stacker brings precision image stacking and on-device AI star removal to iPhone and iPad. Choose a workflow for your photography: • Starry Sky Stack — Align and combine night-sky photos for cleaner, more detailed results. • Landscape Stack — Reduce noise and improve landscape images through multi-frame stacking. • Star & Light Trails — Create star-trail and car-light-trail images. • Star Trail Pro — Produce advanced star-trail results with additional processing options. • AI Star Removal — Remove stars from a single image using an on-device Core ML model. KEY FEATURES • Import images from Photos or Files • Automatic masking and image alignment • 4K and 1080p output resolution options • Local preview generation and project management • Export finished images back to Photos • On-device processing—your source images do not need to be uploaded ROBOTOU PRO Landscape Stack and Star & Light Trails remain available for free. RoboTou Pro unlocks Starry Sky Stack, Star Trail Pro, and AI Star Removal through an annual subscription or a one-time lifetime purchase. Privacy Policy: https://www.robotou.cn/robotou-stacker-ios-privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/