AstroDeck vs ApexSKY

AstroDeck is your real-time window to the aurora, space weather, and the night sky — beautifully designed for iPhone, iPad and Apple Watch. Know when the sky comes alive. Track the Kp index and a live aurora oval powered by NOAA's OVATION model, find the best places to watch tonight, and stay ahead of changing conditions. AURORA & SPACE WEATHER • Live Kp index and aurora forecast • Aurora oval map driven by real OVATION data • Solar wind, solar flares (GOES X-ray), sunspot activity and solar irradiance • Live solar imagery (visible, magnetogram, corona, chromosphere) • Best aurora viewing spots near you SKY & ASTRONOMY • Moon phase with rise and set times • Sunrise, sunset and day length • Astronomical events and reminders • Astronomy Picture of the Day (APOD) • Planets SATELLITES • Track the ISS and thousands of satellites in real time on a live world map • Filter by constellation: Starlink, OneWeb, GPS, Galileo, GLONASS, BeiDou, weather, science, amateur radio, geostationary and more • Overhead ISS pass times for your location YOUR DASHBOARD, YOUR WAY • 20+ widgets you can add, resize and reorder • Local weather and UV index • A clean, customizable home for everything above APPLE WATCH • A full companion app with 10+ screens on your wrist • Follow the aurora, solar flares, the Sun, the Moon, planets, constellations (sky map) and ISS passes — right from your wrist • Complications and Home Screen widgets keep Kp, the Moon and more at a glance LANGUAGES Available in English, Portuguese (Brazil), Spanish and German — with more languages on the way. AstroDeck is free to use. AstroDeck PRO unlocks advanced features — aurora alerts, the Aurora Data Center, advanced widgets and watch complications, and more — via a monthly or yearly subscription, or a one-time lifetime purchase. Data from NOAA, NASA and CelesTrak. Aurora and space-weather forecasts are predictions and actual visibility may vary. — — Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getastrodeck.com/privacy Our Terms: https://getastrodeck.com/terms

ApexSKY shows your local sky at a glance — built for aurora chasers, meteor watchers, and tonight's observing plan. TONIGHT'S DASHBOARD • Home: Tonight's Sky score, weather snapshot, moon phase, and space weather at a glance • Observing forecast timeline — clouds, seeing, moon, and score through the night • Aurora Outlook with a 24-hour Kp forecast for your location LIVE SPACE WEATHER • NOAA SWPC data: Kp, Bz, solar wind, geomagnetic outlook • Animated aurora probability map and solar imagery carousel • Optional push alerts when activity spikes (Kp / storm thresholds) ISS, METEORS & PLANETS • Upcoming ISS passes with brightness, direction, and ground track map • Meteor shower outlook, sporadic rates, and active shower windows for your sky • Planet positions and visibility for tonight LOCATION & ALERTS • GPS or manual observing site; saved dark-sky sites when signed in • Notifications for aurora, geomagnetic storms, ISS passes, and more • Works without an account for core sky features ACCOUNT & MEMBERSHIP • Free ApexASTRO account: sync preferences, saved sites, observing log, achievements, and Messier browse in Best Targets • ApexSKY Member ($3.99/month): subscribe in the app to unlock the full deep-sky planner — NGC, Caldwell, IC, Tonight's Top 3, planning windows, and PRO Sky conditions • Sign in at account.apexastro.app; membership syncs to your ApexASTRO account on iPhone and web where supported ACHIEVEMENTS • Log observations, earn XP and badges; Trophy Room tracks your progress Core sky features are free. Membership is optional and unlocks the advanced observing planner. Data from NOAA SWPC, Open-Meteo, 7Timer, and public astronomy sources. Forecasts and aurora outlooks are estimates — always use local judgment for travel and observing. Questions or feedback: https://support.apexastro.app Privacy Policy: https://apexastro.app/privacy.html Terms of Use (EULA): https://apexastro.app/terms.html