Aspectra is a system of some applications utilizing Android devices and some additional hardware.
Purpose of these applications is to observe display and analyze the spectrum of observed light

Aspectra mini is the base application in Aspectra system.
The Android device with additional low cost spectrometer can be used to observe the spectrum of light. Spectrum is shown as intensity plot. Every plot can be saved for the future analyze with another applications: Aspectra viewer (explorer for spectra) Aspectra analyzer (editor for spectra).

Possible applications:
teaching spectroscopy
chemical analyze
distance measurement
control of LED light source color
astral spectroscopy

To see the spectrometer construction's details visit my web page: www.jandrotek.de
The detail and some help can be find at https://www.jandrotek.de/support/aspectra-technical-concept/