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Country availability
Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.
Top countries
🌍
Country data will be available soon.
We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.
Top chart positions
Not in any tracked top chart.
App manifest
Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.
Data safety
declared by the developer on Google Play
✓No data shared with third parties
✓No data collected
This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.
Permissions
1 in 1 group
0 Sensitive0 Notable1 Routine
OtherRoutine1
Access to miscellaneous device features that don't fit other categories
Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE
Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.
Turn your phone into a professional pocket planetarium.
Constellation Cards — Night Sky Guide is a beautifully designed, offline-ready educational suite engineered for students, amateur astronomers, and night-sky explorers alike. Blending classic astronomical charts with interactive modern tools, this app is your perfect companion under the stars—whether you are observing from a bright city balcony or a pristine wilderness dark-site.
🌟 Key Features
Ultimate Stellar Blueprint Library: Dive into beautiful, clean cards mapping out the night sky's most famous constellations. Explore stars, parent shapes, and astronomical classifications offline.
Pro Observation Planner & Bortle Calculator: Planning a stargazing night? Enter your latitude and select your local Bortle Scale index. The app automatically calculates sky clarity and forecasts the visibility of upcoming celestial events.
Interactive Star Explorer & Spec Sheet: Tap any star on our custom-rendered interactive maps to immediately retrieve its distance in light-years, apparent magnitude, and spectral class.
Hertzsprung-Russell Evolutionary Diagrams: Visually track stellar evolution! Learn whether a selected star is a stable Main Sequence traveler, a expanding Red Giant, or a dying Supergiant.
Telescope Eyepiece Simulator: Test the exact field of view (FOV) of focal lenses ranging from 25mm wide-angle lenses to high-magnification 4mm planetary lenses, complete with simulated atmospheric turbulence jitter.
360° Viewfinder & Horizon Radar: Sweep the local sky dome using manual drag gestures. Rotate, lock on to coordinate alignments, and resolve Right Ascension (RA) and Declination (Dec) boundaries instantly.
Gamified Quiz & 3D Flashcards: Study star layout paths using smooth 3D-flipping digital flashcards, then test your knowledge in customized quiz modes covering mythology, coordinates, and star classes.
Audio Planetarium Mythology Tours: Listen to beautifully animated audio tours detailing the rich mythologies and history behind legendary star figures.
⚙️ Built for True Astronomers
Scotopic Night-Vision Mode: Protect your eyes! Activate our high-contrast monochromatic crimson-red display interface. Perfect for preventing rod cell bleaching and preserving natural scotopic vision during dark-site observations.
24H Rise & Set Transit Graphs: Track precisely
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