Snellen Chart Pro is innovative because it transforms an old style poster test design in a new, modern, intuitive, ubiquitous test. One App with a simple user interface, and an intuitive navigation chart, swiping from optotype to optotype, and with the capability to adapt the Snellen Chart Test to different screen sizes, screen resolutions and user distances.
More from developer
Only tested on Motorola Droid. Please submit bugs/requests!
This is the free version (has disabled options)
*Multiple image sets (Limited on free version)
*Multiple ways to move through/choose images
*Set image size (Adjustable by "viewer distance"). Calibration screen is also provided.
*Configurable actions (Limited on free version)
*Full screen (Limited on free version)
See website (below) for much more information.
This is an open source project, so it is free if you want to compile it yourself. See http://www.castledragmire.com/Projects/GPS_Mapping for more information, including how to set up your own server.
Visit http://www.castledragmire.com/ProjectContent/GPSMapping to register and view GPS locations.
This project currently uses only GPS positioning to find locations (the old way Android used to do it), so it is a bit of a battery hog. I should be updating it at some point to use the new Google Play Location Service which is much more optimized.