* This application is a manual simulator tool that generates randomized data and does not connect to real sensors. * Tap a button to generate a random solar activity percentage from 0 to 100 on the activity screen. * View simulated text indicating Class C, Class M, or Class X electromagnetic flux based on the randomized solar activity number. * View calculated stellar wind speed and proton density numbers derived directly from the randomized solar activity number. * Adjust a slider from 1 to 9 to input a Bortle Scale value on the visibility calculator screen. * View preset text indicating deep sky visibility quality and Milky Way detail based on the selected Bortle Scale number. * View a calculated visual magnitude limit number based on the selected Bortle Scale number. * Type a target object name and optional text notes into form fields to save an observation log locally. * Swipe left on an observation record to delete it from the list or press a button to delete all saved records. * View an informational text screen containing privacy and version details.
Updated on
Feb 21, 2026
Business
Data safety
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Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.