从 9 月 28 日 0 时开始，不仅 91 助手客户端无法启动、所有功能停服，官方网站、帮助中心及客服渠道 也将同步关闭。 在此期间，91助手向仍处于会员期的用户进行退费，但需要用户主动申请，未主动申请退费的用户将无 法获得退款。退款申请截止时间为2025年9月15日24:00，逾期将不再受理退款申请。对于 VIP 会员，官 方表示，会员服务截止日期晚于或等于 8 月 31 日的用户，均可申请从 9 月 1 日起的未使用期限的费用 退款。 公开资料显示，2007年，91 助手由网龙公司（NetDragon）旗下团队开发并发布。最初命名为91 手机助 手，核心功能为当时新出的智能手机iPhone 提供"越狱"、应用安装和文件管理等服务。 2009 年，91 助手开始拓展至安卓平台，新增 Android 刷机、手机管理等功能。此后这一应用的人气一 路飙升，当年几乎占据了国内手机助手市场 90% 的份额。随着智能手机普及，2012年，91 助手用户量 迎来爆发，成功突破 1 亿，下载量超100亿次，堪称移动互联网最早的流量入口之一。 图片来源：智通财经 已经面世近20年的91助手今日彻底关停。 9月28日，经典苹 ...

Core Points - 91 Assistant, a mobile management application, will cease all services on September 27, 2025, due to business adjustments and product iteration needs [1] - Users are advised to back up their data before the service termination, as data will be permanently lost afterward [1] - Refunds will be available for users with active memberships, but they must apply for the refund by September 15, 2025 [1] Company History - 91 Assistant was developed and launched by NetDragon in 2007, initially gaining popularity as the largest iOS "jailbreak" platform, providing services like application installation and file management [2] - By 2009, 91 Assistant expanded to the Android platform, capturing nearly 90% of the domestic mobile assistant market [2] - In 2013, Baidu acquired 91 Wireless, the parent company of 91 Assistant, for $1.9 billion, marking it as one of the largest acquisitions in Chinese internet history [2][3] Market Dynamics - After the acquisition, 91 Assistant was rebranded as Baidu 91 and integrated with Baidu's mobile products, achieving a user base of hundreds of millions and a market share exceeding 50% in 2014 [3] - The rise of official app stores from Apple and Android manufacturers diminished the need for third-party tools like 91 Assistant, leading to a decline in its relevance [3] - By 2020, Baidu announced the discontinuation of 91 Assistant and the Android market, with the latest announcement marking the final closure of the product [4]