TickTick's free tier is the best habit tracker for cross-device Q1 goals.

TickTick’s free version handles multiple habits across all your devices without costing a dime. It works on iOS, Android, Mac, Windows, and the web—everything syncs instantly.

The habit tracker is built into the app (no separate download needed). You set the habit, pick frequency (daily, weekly, custom), and get reminders. It shows streaks and completion rates, which is exactly what you need to stay on track for Q1 goals. You can organize habits into lists or even tag them by goal.

The main downside of the free tier is you only get a few custom reminder sounds and no habit widget (that’s in the paid plan). But the core tracking, streak view, and cross-device sync are all free. I’ve been using it