The software enables easy and low-cost documentation of work when carrying out inspections on gas pipelines. In contrast to GIS solutions, which require a high-quality PC and involve the time-consuming import of pipeline data, Pi Note is a GPS datalogger for Android terminal devices, that enables easy logging of damage, defects and photos. Continuous recording of gas concentrations is possible via a Bluetooth data connection to the measurement devices ELLI, GOLIATH and HUNTER. Positions where a specified alarm threshold was exceeded are recorded and registered separately. The route and the positions of data recordings and alarm thresholds being exceeded are marked in a map.