开发者jotaen在Hacker News分享了一款自主开发的可编程计时器网页应用，专门为健身房锻炼和拉伸练习设计[1]。该应用支持计时倒数、蜂鸣提示和语音播报功能[1]。
应用的突出特点是采用声明式编程方式定义训练程序，用户可直接在URL中编码整个程序内容，无需依赖后端服务[1]。这一设计使得用户能够轻松通过URL分享训练方案或生成二维码进行转移[1]。
用户可访问https://timer.jotaen.net体验该应用，官方提供了演示程序（https://timer.jotaen.net/#demo）供参考[1]。应用的源代码已在GitHub上公开，地址为https://github.com/jotaen/timer[1]。
A developer has shared a new programmable timer web application designed for gym workouts and stretching sessions on Hacker News [1]. The application, accessible at https://timer.jotaen.net, enables users to define training routines using a declarative programming approach [1]. The app operates entirely without backend infrastructure, with workout programs encoded directly into the URL for easy sharing and saving [1].
The timer features sound alerts and voice announcements to guide users through their exercises [1]. A demo version is available at https://timer.jotaen.net/#demo, and the full source code can be found on GitHub at https://github.com/jotaen/timer [1]. The application was developed over the past several months and includes additional functionality such as QR code generation for transferring routines between devices [1].