Read a Peak-Flow Log as Session Bests, Not Averages
Three attempts in, one number out — but which one? Keep the largest attempt per session separate from the others before you compare sessions, and the log stays inspectable instead of collapsing into a guessed average.
1 · Session code | first attempt L/min | second attempt L/min | third attempt L/min
FIRST-LOAD
HYPOTHESIS / PROTOTYPE — checkout unavailable. Calculation is local. A draft is saved automatically in this browser profile when storage is available; Reset to sample clears it. Optional Pro history stores only five summaries and has its own deletion control. State links encode your inputs and can remain in browser history, clipboard or recipients’ records; share only non-sensitive rows. Optional external AI formatting leaves this device. The required site analytics beacon reports page activity; shared URLs contain encoded inputs. Do not treat an encoded URL as private. The calculator has no input-collection endpoint.
Data note: The peak-flow strip processes Session code | first attempt L/min | second attempt L/min | third attempt L/min locally. Starter/sample selection and Run compute in this tab; no input is sent by the calculator. A local draft may be saved; explicit state-link sharing or optional external AI formatting can disclose inputs. Use non-sensitive labels.
Perspective: Before: three attempts per session blurred into one vague number. After: each session keeps its best attempt, and session bests stay comparable.
2 · Read the peak-flow strip
Observation sorting only, not diagnosis, monitoring advice or treatment. Follow your own written action plan and the instructions of the clinician or educator who provided the meter; seek appropriate care for concerning symptoms instead of relying on this log.
Paid layer: peak-flow strip filing layer
one-time step · the free reading above stays complete
Free tier
- one complete unwatermarked peak-flow strip run in the app
- three labeled samples and unlimited article-demo calculations
- complete result text and a user-triggered input-state link
What $4 one-time adds
- unlimited subsequent peak-flow strip app calculations after a local convenience signal
- print the peak-flow strip with visible assumptions and its safety boundary
- CSV of the displayed L/min best and row workings; conditional estimate uses your manual-retyping minutes
- five local reading summaries (headline/count/time), not saved full inputs or cross-device backups
HYPOTHESIS / PROTOTYPE: $4 is a proposed one-time price for filing the peak-flow strip, not a current sales offer. No measured time saving or buyer demand is claimed. The optional manual-retyping baseline above estimates one export’s retyping budget only; it does not change the calculation or guarantee savings.
Local history (this device)
- No saved runs yet — your first run files here.
Checkout is unavailable. Browser-local, profile-scoped convenience gating is best-effort, not server-verified access. A URL or browser flag is not proof of payment. Clearing browser data removes local state; no account or cross-device recovery is provided.
Boundary and sources
Observation sorting only, not diagnosis, monitoring advice or treatment. Follow your own written action plan and the instructions of the clinician or educator who provided the meter; seek appropriate care for concerning symptoms instead of relying on this log.
- Method: The strip takes the largest of the three attempts for each session, then reports the highest session best. Do not substitute an average or a first attempt for the best in your own notes, because those answer different questions. Across sessions, a best can rise while most attempts fall; the row workings keep both facts visible.
- All sample records, dates, quantities and labels are invented. No outside policy, contract, rate, clock offset, measurement or accessibility standard is represented as verified.
- Google’s official pricing documentation, fetched 2026-10-01, says AI Studio is free in available regions. Optional formatting may require a Google account; manual local entry requires none. Limits can change and free-tier content may be used to improve products. Do not send private records.
Mechanism: competence-autonomy-loop
Optional AI formatting, never the calculation
Manual entry completes this peak-flow strip for free without signup. If available to you, the free AI Studio interface linked in the sources may format fictional or non-sensitive notes; external access may require an account. No API key or AI call is built into this tool. Free-tier content may be used to improve products. Review each cell and transcribe it to the labeled row schema; do not paste the JSON object into the row box.
Format only these fictional or non-sensitive notes for a peak-flow strip. Return strict JSON shaped as {"rows": [{"label": "string", "cells": ["string", "string", "string"]}], "setting": "string"}. The columns are Session code | first attempt L/min | second attempt L/min | third attempt L/min; the setting is Session-best review mark (L/min). Keep all supplied strings and quantities exactly; do not calculate, infer missing entries, invent dates or add advice. If any required value is missing, return an empty rows array and ask me for it separately. I will verify every cell against my source and manually transcribe rows using vertical bars before running the local calculator.An AI response is not executed, fetched or trusted as a result. Missing values remain questions; the strict local parser checks the rows you actually enter.