Pacer: Manage your energy

Pacer helps you manage your energy and avoid the crash.

If you live with ME/CFS, Long COVID, or another energy-limiting condition, you know that doing too much on a good day can cost you the next three. Pacer turns the guesswork of pacing into something you can actually see, so you can stay inside your energy envelope and protect your baseline.

Pacer connects to Apple Health and quietly tracks the signals that matter: your steps, time on your feet, and heart rate. It learns your patterns, surfaces them in clear daily and long-term insights, and warns you before you push past your limit.

What you can do with Pacer • Track your day at a glance. See steps per hour, stand time, resting and average heart rate, and sleep, all in one place. • Log activities with how they made you feel. Build a real picture of what helps and what triggers a crash. • Set your energy thresholds. Get a gentle notification when you cross into caution or critical range, before you overdo it. • Check in on symptoms morning and night. Track severity over time with a simple, consistent scale. • See the bigger picture. Spot trends across days and weeks to understand your envelope and adjust.

Built for how you actually feel

Pacer is designed to be low-effort on bad days: large tap targets, minimal typing, and a calm interface that respects limited energy and brain fog.

Pacer is a self-management and tracking tool. It does not provide medical advice, diagnosis, or treatment.