sketchometry is a construction tool for Euclidean geometry. Points, circles and lines can be sketched with fingers or stylus.
This is an excellent teaching/tutoring aid. It takes a little getting used to the interface, but once you get it, it makes teaching and learning math much easier. I haven't scratched the surface on all of the functions yet, but it really seems to be comprehensive. Now I am just awaiting a response on a problem with connecting it to Google Drive so I can import/export (save and reuse) graphs and drawings.
excellent app
Great interaction means, well done!
Bailey Dalton
https://geogebra.org
Fascinating Earthbound Objects
https://sketchboard.me
http://sketch.io/
https://linangdata.com/
https://robocompass.com
http://drawingpad.chromecrxstore.com/
Alcor