SkyChecker vs StargazerLog

Discover whaDiscover what's visible in the night sky tonight — right from your backyard. SkyChecker uses NASA's Jet Propulsion Laboratory data to show you exactly which celestial objects are visible from your location. No guesswork, no complicated star charts — just a simple list of what you can see and when. WHAT YOU CAN TRACK • The Moon with current phase and illumination percentage • All planets from Mercury to Neptune • Deep sky objects: Andromeda Galaxy, Orion Nebula, Pleiades, and more • International Space Station (ISS) passes • Meteor shower alerts with peak times and hourly rates WEATHER INTEGRATION • Live cloud cover and visibility conditions • Observation quality rating (1-5 stars) • Detailed weather breakdown: humidity, wind, cloud layers • Tips for optimal viewing based on current conditions PLANNING TOOLS • Equipment difficulty ratings (Naked Eye, Binoculars, Telescope) • Rise, set, and peak viewing times with compass directions • Date picker to plan future observing sessions • Share tonight's sky with friends and family POWERFUL FEATURES • Automatic GPS location detection • Manual coordinate entry for precise locations • Smart caching for fast app launch • Elegant retro terminal-style interface with ASCII art HOW IT WORKS SkyChecker connects to NASA's Horizons Ephemeris System — the same data source used by professional astronomers — to calculate precise positions for celestial objects based on your exact location and time zone. Weather data comes from Open-Meteo, providing real-time cloud cover, visibility, and atmospheric conditions to help you plan the perfect observing session. PERFECT FOR • Casual stargazers curious about tonight's sky • Amateur astronomers planning observation sessions • Educators teaching astronomy concepts • Anyone who's ever looked up and wondered "what's that?" PRIVACY FOCUSED Your location stays on your device. We don't track you, collect personal data, or show ads. The only external connections are to NASA's public astronomical database and Open-Meteo weather service. Clear skies!

StargazerLog tells you what's happening in the sky above you tonight — real stars, real constellations, real math. Computed on your device from genuine astronomical catalogs, accurate anywhere on Earth. WHAT IT DOES • Tonight's constellations: which of the 88 constellations are up right now, which direction to face, and how high to look — built on a catalog of the brightest real stars (Sirius, Vega, Orion's Belt and more). • Constellation finder: tap any constellation for its star chart, brightest stars, and how to spot it. • Stargazing score: a 0–100 rating of tonight's sky conditions — moonlight, darkness windows — so you know if it's worth heading out. • Meteor showers & sky events: Perseids, Geminids and every major annual shower with real peak dates, plus full moons — see what's coming in the next 30 days. • Moon phase now: current phase, illumination, and moon age at a glance. • Planets tonight: which of Mercury, Venus, Mars, Jupiter and Saturn clear the horizon after dark — and where to look. • Nightly reminder: an optional "Tonight's Sky" notification with what's visible after dark. BUILT ON REAL DATA Star positions come from the Yale Bright Star Catalogue, constellations from the official IAU 88, meteor shower dates from the International Meteor Organization — all computed with deterministic astronomy on your device. No accounts, no guessing, no made-up data. SET YOUR LOCATION Pick a city or enter your exact latitude and longitude, and the whole sky is recomputed for where you actually are. STARGAZERLOG PLUS Core features are free. StargazerLog Plus unlocks every constellation tonight, search, and the 7-Day Sky Ahead — a week of nightly moon phases, the best planets to spot each night, and the darkest sky for stargazing. Available as an auto-renewing subscription, or pay once with the Lifetime unlock. Clearly priced, cancel anytime. Subscription: auto-renews unless canceled ≥24h before the period ends; payment charged to your Apple ID at confirmation; manage/cancel in App Store settings. Lifetime is a one-time purchase — no subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://stargazerlog.com/privacy