CONCENTRATION GRID#ConcentrationGrid #web #app
Concentration Grid app for #coaches #athletes #students
Apple: appsto.re/us/Et3J_.i
Android: goo.gl/35WUY1
#ConcentrationGrid
#challengeyourself #compete
5×5 grid < 15 sec
7×7 grid < 1 min
9×9 grid < 3 min
http://www.concentrationgrid.com
http://www.concentrationgrid.net
http://www.instagram.com/ConcentrationGrid
http://www.fb.com/ConcentrationGrid
http://www.twitter.com/ConcentrationGr
