The  new  iSclack  is  stronger  than  the  older  model.  The  two  added  diagonal‘s  make  isclack  more  un-flexible
to  adapt  the tool  to  the  stronger  touchpanel/frame  adhesive  of  the  latest  models.
The  increased  rigidity  permit  to  control  much  better  the  pressure  applied  to  the  touchscreen  by  the  suctions.

Cracked screens can prevent the suction cups from properly adhering due to the air leakage through the screen.
The iSclack's vinyl screen cover fixes this issue completely.