SolarTrack vs RoboTou Stacker

【SolarTrack】 is a visual solar tracking tool that helps you know where the sun is within seconds — ideal for photographers, outdoor enthusiasts, and anyone who wants to understand daily sunlight changes. Real-Time Solar Arc View the sun's current position on an intuitive horizon arc. Drag the timeline to preview sunrise, solar noon, sunset, and every moment in between throughout the day. Golden Hour & Twilight Alerts Get notified before golden hour, blue hour, and twilight transitions. Plan your shoots or outdoor activities with confidence, knowing the perfect light is on its way. Global Location Support Track solar data for any city on Earth. Search locations with built-in maps, save favorites, or use GPS to get instant results for your current position. Astronomical Calendar Browse monthly solar events including equinoxes and solstices. Tap any date to see sunrise, sunset, and daylight duration details for that day. Detailed Solar Data Access precise azimuth, elevation, declination, equation of time, and solar distance readings — all calculated locally on your device with no internet required. Understand the sun's rhythm, plan your day with light, and never miss a perfect moment. Pricing and Terms $4.99/week* $39.99/year* *Prices shown are in US dollars. Actual charges may be converted to your local currency based on your country or region. Payment will be charged to your iTunes account upon confirmation of purchase. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period, and the renewal cost will be provided. Subscriptions may be managed by the user. Auto-renewal may be turned off by going to the user's Account Settings after purchase. Cancellation of the current subscription is not allowed during the active subscription period. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://qiangmind.xyz/rizhaoyi/privacy.html

Bring image stacking and AI star removal to your iPhone and iPad. RoboTou Stacker gives night-sky and landscape photographers practical tools for processing photos directly on their devices. Import images from Photos, Files, or a folder, choose a processing mode, preview the result, and save it back to Photos. Image processing runs locally, with no account registration or photo uploads required. CHOOSE YOUR WORKFLOW • Starry Sky Stack: Automatically generate a sky mask, align the stars, and process the sky and foreground separately. • Landscape Stack: Combine multiple photos of a static scene captured from a fixed position. • Star & Light Trails Stack: Use maximum-value stacking to combine star trails and vehicle light trails. • Star Trail Pro: Stack up to 100 images with a fade-enhanced workflow. • AI Star Removal: Process a single image on your device to create a starless image for further sky-background editing. OUTPUT YOUR WAY Choose a 4K or 1080p output preset while preserving the original aspect ratio. Smaller source images retain their original resolution. Both stacking and AI Star Removal follow your in-app resolution setting. MADE FOR YOUR DEVICE Switch between English and Chinese. Layouts optimized for the unfolded iPhone Duo display make better use of screen space across Home, mode selection, importing, and Settings. FREE FEATURES AND ROBOTOU PRO Landscape Stack and basic Star & Light Trails Stack are free. Starry Sky Stack, Star Trail Pro, and AI Star Removal require RoboTou Pro, available as an auto-renewing annual subscription or a one-time lifetime purchase. Manage or cancel subscriptions in your Apple ID settings. Privacy Policy: https://www.robotou.cn/robotou-stacker-ios-privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/