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How it works

How a day with Reserve works

You say how you feel. Capacity sets the size of the day. Your plan spends that budget. A Galaxy Watch (via Samsung Health) and weather add soft context — they never take the wheel.

Your day with Reserve

Think of each energy day as four beats. Your day flips at your usual wake time (not midnight) — so early hours before wake still belong to yesterday.

1. Morning check-in

This unlocks today. You rate how the night went, energy, symptoms (including brain fog and the rest of your list), stress, and how many demanding things are already on your plate. That is the main input to capacity.

Until you finish morning check-in, the day stays provisional — gentle and incomplete. Reserve will not pretend it already knows how big today should be.

2. During the day

On Today you see capacity, weather lean, and Reserve load — how much of today’s plan budget you’ve already spent. On Plan you add timed blocks and Anytime tasks. On Signals you can watch live heart rate, overnight sleep, recovery, steps, naps, and weather.

If a Galaxy Watch is connected through Samsung Health in the Reserve Android app (You → Devices), overnight sleep and recovery sync after the night finishes, and live heart rate can cue “ease off” without rewriting the day’s size.

3. As you go

Mark plan items done, skip today if something’s too much, or edit time and cost. Skipped items drop out of Reserve load. You can nudge capacity yourself if the estimate feels off — once you do, live recalculation will not overwrite you.

4. Evening check-in

A short debrief when you’re ready: did you crash or flare, did you overdo it, what drained you, and was today’s capacity too low, about right, or too high? That feedback gently shapes tomorrow and how sensitive weather looks for you. Evening stays locked until morning is done.

Capacity — how big should today be?

Capacity is a score from 0–100 that becomes a mode for the day. It answers: given how you feel (and soft overnight / weather cues), how large a day should you attempt?

  1. Recover — rest is the main job; essentials only
  2. Protect — short list, guard energy carefully
  3. Gentle — light pace, one thing at a time
  4. Steady — balanced and paced
  5. Stretch — more room, still paced — leave reserve left

What moves capacity

  • Better sleep / energy ratings → more room
  • Heavier symptoms, stress, or commitments → more protection
  • Yesterday’s crash → a protective hit (stronger if your pattern is next-day lag / PEM)
  • Taxing weather → a modest protective nudge
  • Soft watch cues from last night only: short or poor sleep, low Energy score, elevated resting heart rate → downs; solid overnight → small ups
  • Yesterday you said capacity was “too high” → more careful next day; “too low” → a little more room

Feelings stay first. Overnight recovery and weather whisper — they don’t outvote you. Live heart rate does not rewrite capacity. Sleep stages, steps, and nap minutes may show up as context without secretly changing the score.

Built for limited energy — FND boom–bust days, ME/CFS and Long COVID energy envelopes, and overlapping conditions where physical, cognitive, social, and emotional load all count.

Reserve load — how full is today’s plan?

Capacity sets the budget— roughly how many plan points today can hold (smaller modes = smaller budgets).

Reserve load is the sum of points on items you’ve planned that aren’t skipped. You’ll see on track, near the limit, or over budget.

Each plan item has a cost:

  • Low (1) — restorative or very light
  • Medium (2) — everyday physical or cognitive load
  • High (4) — standing, outing, heat, or heavy cognitive / emotional load
  • Crash-risk (7) — often linked to delayed worsening (PEM / boom–bust). On a protective day, even one of these is treated as over budget unless it’s essential.

Simple picture: capacity is the size of the cup; Reserve load is how much you’ve poured into it with your plan.

Plan — spending the budget

Plan is your day schedule from usual wake to bedtime: timed blocks on a timeline, plus an Anytime list for flexible tasks. A week strip lets you look ahead (far beyond “this week”) so daily life can live in Reserve instead of a second calendar.

  • Set a time or leave it Anytime
  • Repeat once, every day, or this weekday
  • Skip today drops it from today’s load without deleting a repeating series
  • For repeats you can stop repeating, remove today only, or delete from every day

On Recover or Protect days the plan stays short on purpose — fewer things, more margin — closer to energy conservation than a packed calendar.

What Galaxy Watch adds

A Galaxy Watch syncs to Samsung Health on your phone. The Reserve Android app reads that data after you grant Samsung Health permissions under You → Devices. Reserve does not pair the watch over Bluetooth on its own. The website alone cannot talk to the watch — it shows readings after the phone has synced.

Overnight (after the night finishes)

Sleep length and timing, sleep quality and stages (when Samsung Health provides them), resting heart rate, Energy score, and steps. Capacity only uses soft overnight recovery cues (sleep vs your usual, Energy score, resting HR) — never a borrowed older night, and never made-up numbers on a real account.

During the day

Heart rate for “how am I right now?” Live heart rate drives daytime pacing only — it does not steer capacity. Steps show movement as still / light / moderate / busy context.

Home-screen widgets

On Android, long-press the home screen to add Capacity, Plan, Recovery, Check-in, Live heart rate, Reserve day, Next up, Weather lean, or Plan calendars (today / next week / month — brief or detailed). Long-press a placed widget to set Auto / Light / Dark and transparency. Widgets show the last snapshot from when you opened Reserve.

Daytime pacing — ease off without rewriting the day

Separate question from capacity: “Am I pushing too hard right now?”

Live heart rate maps to effort zones against overnight resting heart rate from your Galaxy Watch (automatic Deep rest / Easy / Moderate / Elevated / High cutoffs — no manual BPM setup). You’ll see calm / climbing / ease off on Today and Signals, plus hard minutes banked and soft alerts after sustained high load. Quiet sitting lands in Easy — not Rest. Deep rest is for near overnight resting rates (lying down / nap-like).

If load stays high, Reserve may suggest skipping a higher-cost plan item — only if you confirm. Live heart rate never silently changes capacity or the plan budget.

Naps — kept separate on purpose

Samsung Health keeps the longest sleep span for overnight and does not fold afternoon naps into “last night.” Mixing them in would make recovery look better (or stranger) than it was.

So naps are their own daytime rest metric: quick log anytime, or careful auto suggestions from long stillness. They never merge into overnight sleep hours. Capacity may mention a nap as rest context only.

Weather that knows you a little

Live weather near you — pressure and how it’s changing, humidity, extremes, wind, rain — becomes a personal weather load. Evening “was capacity about right?” feedback helps tune how sensitive you seem over time. Heavy weather can gently pull capacity down; calm days don’t invent energy you don’t have.

Offline, weather is unavailable and is not used for capacity or nudges until you’re back online.

Where things live

  • Today — capacity, Reserve load, pacing, weather lean
  • Check-ins — morning, optional mid-day pulse, and evening
  • Plan — spend the day’s budget on a schedule
  • Signals — Galaxy Watch live HR, sleep, recovery, movement, naps, weather
  • Trends — compare metrics over 24 hours or weeks (up to three at a time), plus medical and workplace PDF summaries
  • You — profile, notifications, symptoms, Devices (Samsung Health / Galaxy Watch), guide — when online

After you’ve signed in once on a phone, check-ins, plan, signals, and trends keep working offline from a saved copy. Profile edits, Devices, and How to use Reserve need a connection.

Why it’s built this way

Feelings first

Limited energy, FND symptom days, brain fog, and sensory load aren’t fully visible in heart rate. An app that overrides you is worse than one that advises softly and leaves you in charge.

Boom–bust and PEM awareness

Capacity modes, plan costs, and daytime hard-minute cues are tuned to spot boom–bust patterns and stay nearer an energy envelope — protective without turning every ordinary day into an alarm.

Overnight vs live

We use Galaxy Watch where it’s strong — overnight sleep, resting heart rate, and Energy score — for soft overnight context, not as the day’s boss.

Honest data

No borrowed nights, no fake recovery on real accounts. Empty days stay empty until the watch or you provide something real.

Reserve and Visible

If you already know Visible, both products care about pacing. Visible is especially strong at in-the-moment exertion (zones, PacePoints, alerts). Reserve splits two jobs on purpose: deciding the shape of the day (check-in → capacity → plan budget), and daytime pacing that never silently rewrites that budget.

Visible is a product of Visible (makevisible.com). Descriptions here reflect publicly described features; both products keep evolving.

Try Reserve

Early access is invite-based. Join the waitlist to ask for a code, or create an account if you already have one.

Reserve is self-management support, not medical advice. We won’t sell your health information. Privacy · Terms

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