See where your time actually goes. On-device AI sorts every hour into focus and distraction, and your screen never leaves your Mac.
Start an entry on your iPhone when you step away from the desk, and add the phone apps you choose through Screen Time. Both land next to the hours from your Mac.
Get the iPhone app
A model on your Mac reads it and picks the category. Only metadata syncs, so your iPhone shows the same day.
I thought I was working 12-hour days, but Cronus showed me the reality. After a gym session and lunch, I was surprised to see three hours had passed.
I used Rize for a while but found it overwhelming and slow. Tried out Cronus and instantly fell in love with the simplicity and speed. That’s how productivity tracking should feel like.
Cronus is refreshingly simple. Open it, and you instantly see where your time is going. It's easy to classify activities on the fly without getting bogged down in categories. The simplest and most effective time tracker I've used.
HUGE fan so far! Funnily enough, I had a 'holy shit, this product is going to be in my life for a long time' moment when I saw everything I'd done laid out in the calendar view.
Cronus showed me exactly how much time I wasted on Hacker News and other distractions. It’s also great for tracking work vs. learning.
Cronus has completely transformed how I manage my time by automatically tracking my work and distractions with impressive accuracy - really helped me getting more done.
As a PM, context switching is constant — meetings, docs, Slack, planning. Cronus helps me protect focus time and make better use of deep work hours.
I love having an overview of how much time I work on each one of my projects and Cronus does an amazing job at it. It also helps me stay focused, seeing the distraction timer pop up gets me back to work instantly.
I thought I was working 12-hour days, but Cronus showed me the reality. After a gym session and lunch, I was surprised to see three hours had passed.
I used Rize for a while but found it overwhelming and slow. Tried out Cronus and instantly fell in love with the simplicity and speed. That’s how productivity tracking should feel like.
Cronus is refreshingly simple. Open it, and you instantly see where your time is going. It's easy to classify activities on the fly without getting bogged down in categories. The simplest and most effective time tracker I've used.
HUGE fan so far! Funnily enough, I had a 'holy shit, this product is going to be in my life for a long time' moment when I saw everything I'd done laid out in the calendar view.
Cronus showed me exactly how much time I wasted on Hacker News and other distractions. It’s also great for tracking work vs. learning.
Cronus has completely transformed how I manage my time by automatically tracking my work and distractions with impressive accuracy - really helped me getting more done.
As a PM, context switching is constant — meetings, docs, Slack, planning. Cronus helps me protect focus time and make better use of deep work hours.
I love having an overview of how much time I work on each one of my projects and Cronus does an amazing job at it. It also helps me stay focused, seeing the distraction timer pop up gets me back to work instantly.
The only one of the four whose AI runs on your Mac, and the cheapest paid plan.
| Feature | Cronus | Rize | RescueTime | Toggl Track |
|---|---|---|---|---|
| Tracks without timers | Yes | Yes | Yes | Timers, plus an app log you convert |
| AI sorts your time into categories | Yes | Yes | Not stated on their site | Not stated on their site |
| Where the AI runs | On your Mac | Their cloud (OpenAI, Anthropic) | Not stated on their site | Not stated on their site |
| iPhone app | Yes, with Screen Time | No | Yes | Yes |
| Distractions | Nudges based on your goals | Blocker | Blocking in Focus Sessions | Pomodoro timer |
| Price, billed monthly | $6 | $12.99 | $9 | Free plan, or $12 per user |
| Free trial | 21 days of use | 7 days | 14 days | 30 days |
Free for the first 21 days you use Cronus. Days you don't open it don't count, and you don't need a card to start.
$6per month after the trial
Install it and get back to work. By tonight your day is filled in.
We tested 13 models on automatic time tracking categorization, including the one Apple builds into macOS. A 0.8B model we fine-tuned for the job came out on top, and it runs on your Mac.
Everyone reaches for Strava when they describe a tracker for knowledge work. The analogy breaks in exactly the place that matters: Strava measures something you chose to do and want credit for. Your work day is something that happened to you and that you cannot self-report. That is a sleep tracker, not a running app.