radiation-tagger is a tool that reads radiation levels (and optionally geocoordinates) from low-cost radiation-loggers and writes GPS/radiation metadata into Exif tags of image files. It uses CSV-exports from the awesome software geigerlog software which in turn can import the data from various sources.
It loosely follows the unix philosophy - especially to do one specific job well. It is also a command-line utility and written in Python 3, and can easily be installed using pipenv.