(1) The app can be installed on any device with Android operating system, e.g. on mobile phones or tablets. This allows one to work with the app under the bring-your-own-device model or on shared devices that are provided in the lab and used collectively. (2) Installation on a personalized mobile device allows one to take the information on the app from one place to another without the need for coordination with others. This is useful in cases where the data of the app is used to search for past results and should then be inaccessible to others. (3) Since the app supports login by different users, it enables the shared use of a single device by multiple users. This use case is helpful when the mobile device is situated permanently at a fixed location to monitor and record data from a specific balance. This facilitates the capture of data from the given balance as the device can be fixed at the best position for obtaining high resolution images without the need to adjust focus as well as avoiding glare and reflections. (4) The app can manage a weighing procedure associated with a certain weighing task (from ELN, see Figure ) or it can be used for weighing procedures without a predefined task. The latter case allows users to start capturing weight without prior planning in the ELN and to assign the results to an ELN entry at a later stage (see SI). ( ) Furthermore, the app supports two modes for carrying out the weighing procedure: ´single scan´ and ´double scan´. The two modes are necessary so that researchers can weigh the net content of a vessel using tare feature on the balance (single scan) or determine the net content of a vessel by subtracting weight of the empty vessel from weight of a vessel with the substance in it (double scan). While the results of single scan tasks are directly saved after the review of the measured value, double scan tasks require at least two measurements which might be carried out with some duration between them. In the latter case, the app stores the first weighing result until the second weighing value is confirmed. The final result of the process is available after the calculation of the weight difference. As the two modes have different steps, the selection of mode has to be done at the start of a weighing task. (6) In this work, the app was coupled with Chemotion ELN, but it is also possible to use app independent of the ELN (excluding the functionality that is provided by the ELN) or to couple the app with another management systems that provide comparable information as available in Chemotion ELN and a suitable API.