Reserve: Energy Pacing

Reserve helps you track and intentionally manage your energy with ME/CFS and Long COVID (pacing) — at your own pace.

Reserve is a journaling and self-management tool. It does not provide diagnoses and is not a medical device — it helps you keep track of your energy, symptoms, and good and bad days.

YOUR ENERGY RESERVE
A quick morning check-in on sleep, energy, and brain fog — combined with your Apple Health data (sleep including deep and REM stages, heart rate variability, resting heart rate) — gives you a personal "Energy Reserve." It's based on your own 14-day average and decreases throughout the day with your exertion.

APPLE WATCH
See your Reserve right on your wrist and start activities without reaching for your iPhone. A watch face complication shows your current level at a glance.

SIRI SHORTCUTS
Ask for your current Reserve, start your morning check-in, or open the activity planner — by voice through Siri or the Shortcuts app, without opening the app.

PLAN ACTIVITIES
In the Simulator, estimate how much an activity might cost — physically, orthostatically, cognitively, and emotionally. This helps you make deliberate decisions and spread exertion throughout the day.

DIARY & MEDICATIONS
Log symptoms, crashes, and notes — even retroactively with any date. Enter your medications and supplements with individual dosage and time, including reminders for each dose; they appear daily until you remove them.

TRENDS
See the history of Body Battery, HRV, resting heart rate, sleep, and active energy — with a freely selectable time range (3 days to 6 months), average line, and day-of-week pattern comparison.

REPORT FOR YOUR DOCTOR
Export your data as a clear PDF — with trend graphs, daily values, check-ins, diary entries, and medications. Handy for referring to concrete records during appointments.

PRIVATE
Your data stays on your device — no server of our own, no tracking, no account with us. You can optionally enable backup through your private iCloud account so your diary, medications, and history carry over when you switch devices; this runs entirely through Apple's iCloud, not through us. Apple Health data is used read-only.

Reserve does not replace medical advice. Please make medical decisions together with your care team.