i use this app all the time ... – AppBox Pro Review

great app .. i use it on my old iphone 4 , my old ipod touch (one of the first gens) , and the newest ipod touch and an iphone 6 ... would highly recommend this app to anyone -- battery monitor is key .. love the flashlight options (makes your old iphone, have iphone 7 flashlight features) , and lots of other pluses -- not sure what the cost of this is , but i think i payed 1.99 for it, 5 years ago and it was worry every penny -- thanks to the developers for constantly updating and making sure it works on old devices !!! keep up the good work sirs and madams :)
Review by BoPs419 on AppBox Pro.