Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Human-Machine Interface; Troubleshooting; Workload
Aircraft Equipment Problem Less Severe
Flight Crew Overcame Equipment Problem
Software and Automation
Shortly after departure from ZZZ I went to switch to the app to check on turbulence. At this point I noticed that my iPad screen was completely frozen. I could not change anything and had to reboot my iPad to get it back functioning.  I would not have been able to switch to the complex engine out procedure had we had an engine failure!I always only have flight related apps running in the background while flying to help prevent this from happening. Didn't work this time. We need new iPads. Now; I understand this is expensive but our old iPads are starting to become a safety hazard with apps locking up all the time. It's not uncommon for the Jepp app to lag and require closing and reopening. That's a quick fix; rebooting an ipad in the middle of an engine failure is not
Air carrier Captain reported that the electronic tablet was not functioning properly and required a reboot. Reporter stated it was not uncommon for this to happen.