Show HN: A simple to-do app for iPhone, Mac, and your agent

Nagare is a minimalist to-do app that treats calendar events and tasks as the same kind of commitment, letting you order timed and untimed items together in a single list. It was born from the problem of juggling scheduled events and flexible tasks: rather than forcing a time onto every task or tacking events to the top of a list, Nagare lets you place an untimed study session before a timed dentist appointment so your plan reads like a sequence of intentions. Items carry an optional time, so the list shows how your day unfolds without rigid scheduling, and priority projects are visually emphasized so the few most important things stay prominent.

The interface intentionally stays simple and note-like, with controls minimized and checkboxes/times moved to the right to keep focus on the content. Completed and planned items form a history of intentions and follow-through. Data syncs via iCloud and is exposed to an agent through MCP, allowing proactive assistance: the agent can suggest social opportunities when your week lacks plans or check in when workouts are repeatedly skipped. Nagare is available for iPhone and Mac on the App Store.