What's the best Android app for accurately measuring the temperature inside and outside of a room, especially when checking the effectiveness of an air conditioner?

Room Temperature Thermometer is an excellent choice for accurately measuring room temperature, both indoors and outdoors. This is particularly useful when you want to check if your air conditioner is working effectively. The app uses your phone's sensors to estimate the ambient temperature. To get the most accurate reading, ensure your phone is not in direct sunlight or near other heat sources. The app provides easy-to-read temperature displays in both Celsius and Fahrenheit, allowing for quick and convenient monitoring. Many users find it invaluable for confirming the proper functioning of their cooling systems and maintaining a comfortable living environment. Additionally, the app's ability to measure outdoor temperatures helps in planning activities and managing energy consumption.