Amateur Radio Toolkit is the best app for ham radio hobbyists. It contains many calculators to help you design radios and antennas for all your projects. Tools: Q code - A list of common Q codes. 92 Code - A list of common 92 codes. RST code - A list of RST codes. Coordinate calculator - Find your latitude and longitude by entering your maidenhead square.
The app was originally developed by Electronial and it is included in the Educational category. Amateur Radio Toolkit has been downloaded and installed by over 100K users and the latest release is dated Sep 16, 2018. Users rated the tool 4.5 on Google Play.