Apps like Project SPECTRA!

Here are some great alternatives to Project SPECTRA! by University of Colorado Boulder :
Solar Walk 2 for Education
Solar Walk 2 for Education
★3.6
Chemistry & Physics simulation
Chemistry & Physics simulation
★4.6
Arduino Science Journal
Arduino Science Journal
★4.1
Solar System for kids
Solar System for kids
★4.2
Lightspeed Activate
Lightspeed Activate
★4.9
Solar Walk 2: Planetarium 3D
Solar Walk 2: Planetarium 3D
★4.5
Solar System Scope
Solar System Scope
★4.5
Solar System Scope 12+
Solar System Scope 12+
★4.5
Solar Tracker
Solar Tracker
★4.5
Astronomy Game
Astronomy Game
★4.3
Palmetto
Palmetto
★3.8
Kids Astronomy by Star Walk 2
Kids Astronomy by Star Walk 2
★4.4
Arloon Solar System
Arloon Solar System
★4.3
Solar Walk Lite Planetarium 3D
Solar Walk Lite Planetarium 3D
★4.6
Sunrise by ION Solar
Sunrise by ION Solar
★3.6
SpaceWeatherLive
SpaceWeatherLive
★4.3