First thing is move that app elsewhere on the home screen.
If the new app in the same position opens this time it is probably screen hardware problem.
If the same app opens in the new position is is probably software.
If it is hardware you need to contact Apple Support for a repair.
Before arranging for a repair or visit to a genius bar, first try a Forced restart
Click here > Force restart iPhone – Apple Support (UK)
If no better you should probably arrange a repair
Click here > iPhone Repair & Service - Apple Support
Or Click here > Contact - Official Apple Support
Anything other than Screen or Battery may be a replacement phone and the price is in the article under "Other damage"
See also: Get your iPhone, iPad, or iPod touch ready for service - Apple Support
There is no compensation for hardware that fails during an update.