Energy & crashes
Track your energy and the crashes that follow doing too much, so you can pace.
For people living with ME/CFS
A companion for life with ME/CFS.
With ME/CFS, doing too much can cost you days. Valeska keeps energy, activity, sleep, symptoms, and the days after exertion together, so your own pacing record is easier to understand.
Built by a husband-and-wife team, and one of us lives with a chronic condition every day.
What to track with ME/CFS
The things that actually move the needle.
Turn on only what matters to you. Everything else stays out of your way.
Sleep
Unrefreshing sleep is part of ME/CFS. See how your nights connect to your days.
Brain fog
Note foggy days so patterns show over weeks, not just on the hard days.
Triggers
Log what came before a crash: stress, activity, poor sleep, to learn your limits.
Symptom timeline
Keep a clear timeline of symptoms and severity to share with your doctor.
Visit prep
Walk into your appointment with a clear summary of what changed.
What your record can reveal
See what changed across time.
Illustrative examples of patterns across daily entries.
📈 Pattern noticed
Brain fog and fatigue tend to show up together.
On 8 of your 10 fatigue days this month, you also logged brain fog. They rarely showed up alone.
💪 A self-care win
More rest this week, and fewer symptoms.
About 2 extra hours of sleep a night, and a third fewer flare entries than last week. Your calmest stretch in a month.
✨ Worth bringing to your visit
Low-water days are followed by more afternoon fatigue.
Last 14 days: 4 of your 5 fatigue entries came the day after you missed your water goal. On goal-met days, fatigue showed up just once.
See it in action
ME/CFS vitals and sleep, in one place
See how Valeska pulls your vitals and sleep from Apple Health, so pacing and patterns with ME/CFS are easier to see.
Tap to play. Valeska on iOS, silent.Watch the full health data video and read the transcript.
Common questions
Questions about ME/CFS.
What should I track with ME/CFS?
Energy, activity, sleep, and how you feel a day or two after doing more than usual. Many people track activity to avoid the crash that can follow overexertion.
What is post-exertional malaise, and how do I track it?
It is when symptoms get worse after activity, often a day or two later. Logging what you did and how you felt afterward helps you find your limits and plan around them.
Can an app help me manage ME/CFS?
Yes. Valeska lets you log energy and activity in seconds and spot the patterns that lead to a crash.
Is there a free, private ME/CFS tracker?
Yes. Valeska is free to start. It encrypts your local record and lets you control what is synced or shared.
How can tracking help me pace myself?
By logging what you do and how you feel after, you start to see your limits. That makes it easier to plan rest before you hit a crash.
Walk into your next visit ready.
Valeska turns months of quick logs into a clear summary you can hand to your doctor.
Explore Valeska →Valeska is a personal health companion. It doesn't diagnose, treat, or replace your care team.