What's the best Android app for accurately measuring room temperature indoors?

Thermometer++ Room Temperature is particularly effective for monitoring indoor climate conditions in homes, offices, or other enclosed spaces. The application accesses built-in device temperature sensors to deliver real-time readings, though accuracy can vary depending on the specific Android hardware. Users can calibrate the readings against known temperatures to improve precision over time. The interface displays current temperature in both Celsius and Fahrenheit, with historical tracking that shows temperature trends throughout the day. This feature proves useful for identifying temperature fluctuations in different rooms or monitoring heating and cooling system performance. The app includes humidity monitoring where supported by device hardware, providing additional environmental context. While external factors like device usage and case insulation can affect readings, the calibration feature helps mitigate these variables. Reviews indicate the app performs reliably on devices with dedicated temperature sensors, though users should verify readings against standalone thermometers for critical applications. The minimalist design focuses on essential functionality without unnecessary features that could complicate the user experience.