The only App that Maximize your Battery Life and Increase Battery Usage. Full support iPhone 4 Retina display. This version is a lite edition. If you like this version. Buy the Pro edition.FEATURES: Battery StatusYou can find 8 types of batteries available time. Full cycle ChargeDisplays battery charge state.Amber Battery has special feature. Exactly, You can find out whether the battery full charge. 6+ user themeHas more than 6 of the color, the national themes. Battery TipsThe various tips on battery life helps that you can using the device longer.--------------------If you like this version. Buy the Pro edition.In addition, Pro version includes these features. 17 types of Battery StatusYou can find 17 types of batteries available time. 100+ user themeHas more than 100 of the user, the color, the national themes.You have the wide selection of themes. Battery alarm 10+ battery alarm soundsYou can hear the battery full charge sound. Full support for Multitasking Build theme with any photoYou can make your own theme with any photo, such as a photo of your family, friends, pet, favorite actor, art photo, etc. If these photos are in your album, you can easily import, zoom and place them just two click. 20+ Battery TipsThe various tips on battery life helps that you can using the device longer. Battery WizardYou can forecast the lifetime of the battery by the first day of using your device.If you have any questions, please contact us by Email: ucsupport@ucglobal.net. We will answer your question as soon as possible.Thank you!--------------------------from Amber Team.