Iyaco is a free Android app developed by Harold KY Kim. It falls under the category of Utilities & Tools and offers a convenient way to estimate object distance and height.

With Iyaco, users can quickly estimate the distance of an object by aiming the camera at it and letting the red cross fall on the bottom of the object. The app utilizes camera autofocus to ensure accurate measurements. Additionally, users can adjust the height of the camera lens by clicking and dragging the camera target display on the screen or manually entering the camera height.

It's important to note that the accuracy of Iyaco is dependent on the actual condition of the phone's sensors. Nevertheless, this app provides a useful tool for estimating distances and heights on the go.