Whats Up! is a premium Android AR astronomy app (package com.whatsup.stargaze). You point your phone at the sky and it identifies and overlays stars, planets, satellites, and deep-sky objects in real time.
Core idea: a live camera AR sky view with OpenGL overlays, driven by sensor fusion (rotation vector) plus GPS, so celestial objects stay aligned to where you're actually pointing.
Key features:
Live CameraX AR view (or a star-map mode with a black sky)
Offline star / Messier / constellation catalogues and local planetary ephemeris (Sun, Moon, Mercury–Neptune)
Find Object navigation with angular guidance to point you at a target
Satellite tracking (CelesTrak TLEs + SGP4-lite: ISS, Starlink, etc.) and optional aircraft (OpenSky)
Extras: meteor shower mode, time travel, night vision, planner/visibility alerts, discovery mode, achievements, photo mode
Star-pattern calibration to correct compass bias, plus the HUD tap SFX and "Stabilise sensors" control added recently
Tech stack: Kotlin, Jetpack Compose, Material 3, Hilt DI, multi-module architecture (core, data, domain, feature/*, rendering). Min SDK 26, target SDK 35.
It's built to work offline for the core experience, with internet only needed for optional TLE/aircraft refreshes.
Testing Instructions
signup for testing using the link when its ready, then open and use the app at least once per day for 14 days. then check back here for a completion
Screenshots
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