Armillary vs Telescope

Armillary — your pocket stargazing guide. Raise your phone to the sky and instantly identify the constellations, planets, and bright stars overhead. Whether you're a seasoned astronomer or looking up for the very first time, Armillary makes stargazing effortless and fun. KEY FEATURES REAL-TIME SKY MAP Powered by your gyroscope and compass, the star map follows wherever you point. Constellation lines and planet labels are clear at a glance. AR STARGAZING Open your camera and watch constellation lines and celestial labels overlay the real night sky in real time — what you see is what's there. SEARCH & NAVIGATE Looking for a particular star or constellation? Type its name, follow the arrow, and locate your target with ease. TIME TRAVEL Drag the timeline to see the sky at any moment, past or future. Relive last night's meteor shower or preview next week's planetary conjunction. CELESTIAL ENCYCLOPEDIA Tap any object to see its name, apparent magnitude, distance, home constellation, and more. ASTRONOMICAL EVENT CALENDAR Meteor showers, solar and lunar eclipses, planets at opposition... See upcoming astronomical events at a glance, with reminder notifications so you never miss a spectacular sky. NIGHT MODE A full red-light filter protects your dark-adapted vision — designed for real observing out in the field. WORKS OFFLINE 9,000+ bright stars, all 88 constellations, and planetary ephemeris data are built in — no connection needed. Dark-sky sites rarely have signal, and that's exactly what Armillary was built for. Armillary is inspired by the armillary sphere devised by Zhang Heng, an astronomer of the Eastern Han dynasty (c. 78–139 CE) — one of humanity's earliest models of the celestial sphere. We hope to carry that same curiosity and wonder into the modern age.

Telescope turns your iPhone into a complete stargazing companion. Whether you're a first-time sky-watcher or a seasoned amateur astronomer, Telescope helps you plan your sessions, identify what's overhead, and keep a lasting record of everything you observe. Tonight tab — know what to look at before you step outside. Telescope computes real-time visibility for hundreds of deep-sky objects and planets based on your GPS location. Every object is ranked by peak altitude so you always start with the best targets. Filter by type — planets, stars, nebulae, galaxies, open clusters, globular clusters — and tap any row for full details. Full Catalog — browse the complete object library at any time. Each entry shows magnitude, constellation, minimum aperture needed (naked eye, binoculars, or telescope size), and a description. Mark favorites to jump back quickly, or add objects to your wishlist for future sessions. Observation Log — record your sightings as you make them. Log date, location, telescope used, conditions, and personal notes for every object you observe. Your history builds into a searchable personal archive of the night sky. Accurate Astronomy — positions are computed using established low-precision ephemeris formulae (Meeus, Duffett-Smith) accurate to roughly ±1°. Planet positions update in real time. All calculations happen on-device; no internet connection required. - Tonight visibility ranked by peak altitude and score - Real-time planet positions for Mercury, Venus, Mars, Jupiter, Saturn - Deep-sky catalog: nebulae, galaxies, clusters, and more - Personal observation log with notes and conditions - Favorites and wishlist for fast session planning - Works fully offline