Health Horizons

Assembled by the director on 2026-10-18 from ~/product-health-horizons README.md and RESUME.md; a draft for Wayne's revision on the product details page. The factory builds to the current version.

Problem. Calorie loggers count; none of them judge. People who already log meals in Lose It, MyFitnessPal, Cronometer or MacroFactor still cannot see, at a glance, whether they are on track today, this week, this month, this year — and they will not switch loggers to find out.

Who. A person on iPhone who already logs food in another app and weighs in regularly, and wants one honest verdict on their energy balance over every horizon.

Must.

• Read intake, active and basal energy, steps, exercise and weight from Apple Health; never ask the user to log a meal (M-056). Name the app each number came from.
• Estimate resting metabolism (Mifflin-St Jeor), turn it into a daily expenditure from Health's measured energy, set a budget from the goal (lose · maintain · gain), and calibrate the estimate weekly against the weight trend.
• One gauge at every scale: three arcs (intake · burn · balance) for the day, drawn over the window's totals for the week, month, year and forever; rolling or calendar periods, remembered.
• Weigh-ins: every reading over the smoothed trend, the writing app named; Remove takes a reading out of the trend (deleted from Health only when this app wrote it; a scale's reading stays and is marked).
• The only write to Health is the weigh-in typed here. No health data to iCloud; the cached ledger stays on the device.
• iPhone first; iPad, Apple Watch and Mac apps and the widgets from the same codebase (SwiftUI, XcodeGen, a Core package; make build-all is the gate).

Signal. TestFlight installs and a week of daily opens by people who keep their current logger.

Output. A native Apple app on the App Store (listing pack under docs/app-store/), the support and privacy pages on freebeer.ai, the product page with real screenshots.

Investment case

• Buyer. A logger's user who wants the judgment on top of the counting.
• Price. Monthly or yearly subscription, or lifetime — tiers on the product page; Wayne sets the price.
• Path to market. The newsletter and the product page announce it; the App Store listing carries it.
• Still open. The App Store Connect API key (Wayne), a real app name in the sample screenshots, three more screenshot sets.