Sky Map vs Sideris

Point your phone at the sky — and know. Sky Map identifies every star, planet, constellation and deep-sky object you point at, instantly and fully offline. 115,000+ real stars and all 88 constellations render at buttery frame rates, aligned to your exact horizon. FIRST ON THE APP STORE • ISS Pass Live Activity — a countdown and pass arc right on your Lock Screen and Dynamic Island. Never miss a flyover again. • Meteor-shower peak nights and darkness countdowns as Live Activities too. THE SKY, YOUR WAY — 8 STYLES Realistic, Chart, Atlas (engraved gold), Red Night, Astro-photo, Aurora, Ink & Paper, Minimal Mono. Your chosen look follows you across the app, all 13 widgets and Apple Watch. BUILT FOR REAL NIGHTS • True 100% red night mode — protects your dark adaptation on every screen • Stargazing Index: one 0–10 score from clouds, Moon and light pollution • Drag-to-align compass correction + magnetic-interference detection • Stars twinkle. Planets don't. (That's real physics — and how you tell them apart.) ON YOUR WRIST Wrist-guided ISS spotting with a live bearing ring, a whole-sky dial, a solar-system orrery you can scrub through time, and Smart Stack complications that surface exactly at dusk. 13 WIDGETS Live sky chart, 360° horizon panorama, Moon phase calendar, solar system now, constellation of the day, aurora Kp index, the Sun live from NASA SDO, event countdowns with a one-tap reminder bell, and a red Nightstand mode for StandBy. HONEST BY DESIGN • Works 100% offline — airplane mode, backcountry, anywhere • No account. Your location never leaves your device. • The free tier stays free, forever. Premium adds depth: the 115,000-star deep catalog, 450+ NGC/IC objects, satellites, comets, event reminders, observation lists with FREE iCloud sync, and every style. The sky is out tonight. Go look up. For more information, please see our Privacy Policy and Terms of Use. • Terms of use: https://deeplyai.app/terms.html • Privacy policy: https://deeplyai.app/privacy.html Support & Contact Need help? • Rate us! Got feedback? info@deeplyai.app

Point your camera at the night sky and know exactly what you captured. Sideris is a plate-solving companion and interactive star map built for astrophotographers with simple gear: a camera, a lens, and a star tracker. No go-to mount required. Take a photo of the sky and Sideris solves it: it identifies the exact patch of sky in the frame and reports where the camera is pointing, in real celestial coordinates. The photograph is then overlaid on the star map, at the right angle and the right size, among the stars and deep-sky objects that surround it. STAR MAP AND PLATE SOLVING - Interactive star map: pan and zoom across a live map of stars, planets, and the Moon. - Messier catalog: all 110 Messier objects, each with a real NASA and ESA photograph and an altitude curve showing when it climbs highest and when the sky is dark enough to shoot it. - Plate solving: identify any night-sky photo and get its true celestial coordinates. - Photo on the sky map: the solved picture appears exactly where it points, with the surrounding sky in view. - Distance to target: pick the object you were aiming for and see how far the center of the frame sits from it. TOOLS FOR THE FIELD - Polar alignment scope: a built-in reticle for aligning your star tracker. - Night mode: a red-light theme that turns on automatically after dark and preserves night vision. - White screen: a dimmable white panel for shooting flat frames. - Moon phase calendar: phases, illumination and moonrise times for any night, whether the Moon is the problem or the subject. NO TELESCOPE REQUIRED Solving works fully offline. No signal needed at your dark site. Sideris is built for the DSLR and tracker setup that most beginning and traveling astrophotographers use, without a go-to mount or an observatory. TRY IT FREE Start with free plate solves to try it out. When you are ready for more, unlock unlimited solving with a single one-time purchase. No subscription, ever. Clear skies.