Seven days and a Someday list fit on one screen in Plain Week, a minimal weekly planner and to-do list. Click an empty row, type, press Enter, and keep typing. Writing "17:30 Gym" sets the time for you. Each task opens into a dialog with eight colors, plain-text notes, and a checklist of subtasks. Repeats run every few days, weekly on chosen weekdays, or monthly on a set date, with optional end dates and edits for one occurrence or the whole series. Drag tasks between days, into Someday, or past the screen edge to another week, by mouse, touch, or keyboard. Right-click to color, duplicate, delete, or push a task to tomorrow or next week, with undo. Arrow keys change weeks and T returns to today. The planner works offline, installs as an app, and keeps data in the browser until you add an account to sync. Export every task to JSON, import it into another instance, and pick light or dark themes or right-to-left layouts. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.