About this app
Learn about the Solar System using real data! The Project SPECTRA! app is a set of interactive lessons to help students learn science topics, particularly how light is used to explore the Solar System. It is meant to be an in-classroom activity, accompanying lessons found here: https://lasp.colorado.edu/home/education/k-12/project-spectra/ The app features interactive activities for 11 different lessons. Some of the activities serve as alternatives to purchasing scientific equipment to use in the classroom. For an accessible version of the app, see the above link.
Latest release
What’s New
Updated to work with the newest versions of iOS
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 snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 17, 2026 · 8:03 PM Free
Screenshots
