go48s (o2s.emul.hp48s) on Google Play
Free HP48S hardware emulator- auto save of RAM- speed up to x20- timers (and clock emulated)- clock sync with android- no sound- no port (it's a hp 48 s emulator)Avoid checking 'force gpu rendering' in developer option in android 4.x prefs, this leads to graphic problems.On S5 devices, long press the right hardware button to get the menu.