Cronus – Context-aware AI time tracker for macOS

In plain words

Cronus is a macOS time tracker that uses AI to automatically distinguish between productive work and distraction, even on sites like YouTube or LinkedIn. Unlike traditional trackers that either block sites or require manual logging, it intelligently categorizes activities based on context. The app includes a menu-bar timer for subtle productivity gamification, 24-hour tracking with calendar-based suggestions, and nudges rather than rigid restrictions. It's designed for users who want accurate visibility into their time usage without intrusive blocking or constant manual input.

written from the facts on this page · September 2026

From the sources

Cronus is an AI time tracker for Mac. It records what you work on automatically, with no timers to start, and tells you what your time actually went to. Free for 21 days, then $6 a month.

How many hours have you worked last week? How much time were you distracted? Cronus helps you answer these questions using context-aware AI (not just rule-based categorization). See your productivity counting up live. No annoying and rule-based blockers. Sometimes you have to use distracting websites for work. Cronus understands what you are doing and categorizes your work accordingly. Sensitive information is redacted on your device, so it never reaches our servers. Pause tracking whenever you like, and revoke the accessibility permission at any time. Cronus reads window metadata and nothing more. I thought I was working 12-hour days, but Cronus showed me the reality. After a gym session…from cronushq.com

In the maker’s words, at launch

Hi HN, We built Cronus, a context-aware time tracker for macOS that uses LLMs to differentiate productive tasks from distractions—even on sites like YouTube or LinkedIn. Existing apps frustrated us because they either strictly blocked useful sites or required constant manual tracking. Cronus understands context…

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