Show HN: Programmable timer web app (for gym workouts or stretching sessions) https://ift.tt/cUYlVJb

Show HN: Programmable timer web app (for gym workouts or stretching sessions) Over the last couple of months, I’ve been building a timer web app for myself that I use for workout and stretching sessions. My main use-case is gym routines that consist of repeatable sequences, e.g. where you are holding certain positions for a set time (rinse and repeat). The app counts down the program, beeps, and reads the activities out loud. Two things (I suppose) are special about it: - The timers are “programmable”, so you can freely express your own routines and procedures in a declarative notation. - The app is all static (no backend): the entire program is encoded in the URL and can be bookmarked or shared/transferred via QR-code. You can check it out at https://ift.tt/9XGyRTD , optionally with a demo program pre-loaded: https://ift.tt/EGYCDrm . Source code is at https://ift.tt/3jwkLlx . I’ve also written up a small behind-the-scenes on my blog: https://ift.tt/mGVHhcr https://ift.tt/9XGyRTD August 12, 2026 at 11:57PM