We make GNSS surveying available to any fieldworker who knows how to use a smartphone. marXact is a Dutch company, founded in 2017 and based in Hilversum, that develops centimetre-accurate GNSS receivers and field software. Our UNI-Collect app and UNI-GR2 receiver let surveyors, utility companies and contractors measure, document and stake out infrastructure such as fibre optic cables, sewage lines and pipes, without the cost of hiring a traditional survey service. All our hardware and software is developed and produced in the Netherlands.