Essentially this is simply a rough list of formulas lifted out of any echo textbook. It contains no graphics, no images, no interactive features. Some measurements are simply blank and and many of the links for more information simply state coming soon in future updates. The print for the links is too small to read easily. This app appears to have been released before it was finished and is very lacking.
Samchuck2 about ECHO - Echocardiography Reference