About this app
Xasteria helps you decide if tonight is worth observing. It brings together astronomical weather forecasts, sky conditions and observing tools in one ad-free app, built around the 7Timer ASTRO forecast. Configurable forecast sources: • 7Timer / GFS, worldwide coverage, ~20km resolution: · Cloud cover (with layer breakdown) · Astronomical seeing · Atmospheric transparency · Temperature and humidity · Rain / snow · Atmospheric instability · Wind speed and direction • MET Norway, based on the ECMWF model, particularly useful in regions with significant terrain variation Sun/moon details: • Sun / Moon rise, set and twilight times. • Moon phase and elevation. Tools: • Aurora forecast, with worldwide and local data/maps. • ISS and satellite passes for your location. • Light pollution report and map for your observing site. • Quick access to Clear Outside, Meteoblue, Windy, Astrospheric, Sat24, water vapor satellite imagery and more. Display Three display modes: 7Timer icon/graphic view, color-stripe view, or raw text. The left panel can be switched to icons, and summary icons and cloud layers are configurable in settings. This app will always be ad-free, with no in-app popups asking for reviews. If you would like to support it and the 7Timer service, Xasteria Plus adds an Apple Watch app, Home Screen widgets, OpenWeather real-time forecasts, Apple Weather, night vision mode, lunar calendar, solar eclipse tools and more. A quick rating or review on the App Store is always appreciated. For suggestions or feedback: http://astro.ecuadors.net
Latest release
What’s New
• New light pollution data option: an extrapolated World Atlas based on VIIRS 2025 satellite night-light data. • Satellite orbits are now calculated on board, with dedicated Tiangong and Hubble views. • Spanish localization. • New combined recent locations and location search icon. • Further fixes, UI tweaks and expanded Help. Remember, the app never nags you with popups, so it gets very few ratings/reviews. Support it by rating it!
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
- First observed Sep 28, 2026 · 11:24 PM Free
Screenshots
