The use of the COSMO Gas Clearance App leads to significant time savings in the measurement process as well as in the equipment release process for the maintenance or repair personnel. In the admin tool of the app, the necessary measurements are planned, including values and locations to be measured. The gas measurement operator performs the measurement with a gas measuring device and feeds the measured values directly back into the evaluation tool via the app. Alternatively, the data can be saved for later synchronization and then transferred when the mobile device is online again.