The new SmarTest concept from Paul N. Gardner Co. consists of an app and a wireless sensor. It offers a solution for measuring coating thickness with the help of smart phones and tablets. The SmarTest version of SIDSP sensors to measure coating thickness combines exceptional precision in measuring and resistance to interference with the advantages of the modern wireless technology. The digitally generated readings on the sensor are relayed by Bluetooth to your smart phone or tablet. The SmarTest App functions as a device for evaluating and thus replaces a conventional coating thickness gauge. It turns an android smartphone or tablet into a measuring device. Its functions include a clear display of current measuring value, statistical evaluation, storage of measuring values in files, two-point calibration, measuring unit metric/imperial switchover and export of the series of measurement in the CSV format. Features include a wireless sensor for coating thickness measurement. All the functionalities of a smart phone are available for data transfer. Long battery life: the sensor equipped with the LiFePO battery can function for up to eight hours in continuous operation. Readings exceeding the set limits are indicated on the sensor’s green/red LED. SmarTest functions on old smart phone models as well as on the latest ones. The dual Bluetooth module ensures a long operating time in modern devices thanks to the Bluetooth low energy mode. SmarTest can also be supplied in other combinations with any of the SIDSP-sensors of the MiniTest 700 series, to cover a wide field of different applications.