PlanetDroid
Astronomy ephemeris app for calculating high precision ephemeris and positions of Sun, Moon and the Planets for engaged amateur astronomers and planet...
W. Strickling
EclipseDroid USB Free Version
EclipseDroid is the ultimate companion for each engaged solar eclipse observer and all people, who are interested in solar eclipses. The app calculate...
Astrophoto Calculator
A small app for astro photographers for calculation of image filed sizes for certain combinations of camera and lens. You can also calculate the maxim...
Camera Timer USB
Release your digital camera (eg. a DSLR) with your phone! Now CameraTimer supports USB host mode of Android 3.X and higher. A special USB adaptor cabl...
GPS-Tacho
GPS-Tacho is a speedometer based on the values of your GPS sensors. It is displaying speed, precise GPS-time, coordinates, altitude, a compass with be...
Scheiner Calculator
This app helps you to align your parallactic telescope mount toward the celestial pole, using the numeric Scheiner method given by Dr. M. Knülle, 2000...
Standard Atmosphere Calculator
A small app for calculating the standard atmosphere. Get temperature, pressure, density, speed of sound, absolute humidity, vapour pressure and dew po...
EclipseDroid USB
EclipseDroid is the ultimate companion for each engaged solar eclipse observer and all people, who are interested in solar eclipses. The app calculate...
GeoSat4Android
Small astronomy app for calculation the apparent position of geostationary satellites. It assumes a circular orbit with aninclination of 0°. For visua...
Perseids
A small app for the recording of visual meteor observations. It has large red buttons not spoiling the dark sky adaptation of your eyes. The data are ...