Conductometric sensors have found a wide range of applications, particularly as gas sensors and for evaluating the quality of engine oil. Due to their ability to detect a wide range of analytes and their ease of use, conductometric sensors have become increasingly popular in many fields. They have proven to be useful in detecting changes in the properties of a wide range of substances, making them a valuable tool in research, industry, and medical diagnostics. Conductometric biosensors are highly advantageous due to their ability to operate at low working voltages, which not only saves energy, but also reduces the risk of electrochemical reactions that can interfere with the accuracy of measurements. Furthermore, they do not require the use of a reference electrode, which simplifies their design and operation. These sensors can quickly analyze samples, which is a critical feature in time-sensitive applications such as medical diagnostics. Conductometric biosensors are also known for their high sensitivity and precision for detection of biological molecules, including both electroactive and nonelectroactive species. Another advantage is that they can be produced using low-cost and easily accessible technology. These features make conductometric biosensors highly suitable for various applications, including gas sensing, food quality control, and medical diagnostics.