The Ruler App (ARCore) is a free measurement app for Android that uses augmented reality technology to measure lengths in the real world with your smartphone’s camera. To use the app, simply point your camera towards a detected horizontal or vertical surface and start measuring. The app measures linear distance in centimeters and is quite accurate in most everyday situations, with accuracy precision within 1cm of range. However, please note that the app requires the ARCore library produced by Google, which is constantly improving to positively affect the quality and accuracy of the app.<br/><br/>The Ruler App (ARCore) is a useful tool for measuring length in the real world using your phone camera. The app is easy to use and provides fairly accurate measurements depending on user accuracy and competency. While the app is not 100% accurate, it is always very close to the real measurement. The app also has a feature under development to measure area and volume, which will be updated on the app soon. Please note that the app requires the ARCore technology provided by Google, which is constantly improving to make the process of using ARCore technology for measurements more useful and pleasant.<br/><br/>In conclusion, the Ruler App (ARCore) is a helpful app for measuring length in the real world with your smartphone’s camera. The app uses augmented reality technology to measure linear distance in centimeters and is quite accurate in most everyday situations. While the app is not 100% accurate, it is always very close to the real measurement. Please note that the app requires the ARCore library produced by Google, which is constantly improving to positively affect the quality and accuracy of the app. Download the Ruler App (ARCore) today to start measuring length in the real world!