WEMO LiFePO4 app for iPhone and iPad 4.2 ( 6752 ratings ) Utilities Developer: 益日 阮 Free Current version: 1.2, last update: 1 year ago First release : 11 Oct 2020 App size: 3 Mb WEMO LiFePO4 App is only used for Lithium LiFePO4 battery which based on bluetooth 4.0 BLE technology.