Repellent Slightly app for iPhone and iPad 4.6 ( 896 ratings ) Utilities Travel Developer: e_stone Free Current version: 1.2, last update: 7 years ago First release : 21 Jun 2014 App size: 4.35 Mb 使用 iPhone 发出超声波来驱赶蚊蝇,环保节能,对人体无害