Tushar Nath

Digital transformation · APAC

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Web product

Medicine & Vitals Tracker

A bilingual, build-free progressive web app for medicine and vitals tracking by elderly users: a tap-to-log daily checklist, scheduled reminders, a shared caregiver view and a printable report. Designed for large text, few taps and zero running cost.

Status
Private use
Built with
Static PWA (no build step) · Google Sheets as datastore · Google Apps Script · Cloudflare Pages

The case study

The problem

Some questions should never have to be answered from memory. "Did I take this one at two o'clock?" is exactly such a question: small, daily, and carrying stakes out of all proportion to its size, because for an elderly user on several medicines a day, the honest answer is too often a guess. And the uncertainty multiplies outward. A caregiver logs the day on faith; a doctor opens the next consultation by asking what the readings have been; someone too far away to help watches for the turn in a trend that a phone call cannot show. The tracker was built to retire every one of those guesses at once, by making the record the easiest thing in the room to consult.

The approach

The engineering bends entirely toward the people using it. A build-free web app in plain HTML, CSS and JavaScript, installed from the browser to the home screen, no app store standing between an elderly user and their checklist. Every label speaks Hindi and English. The text is large, and marking a medicine taken is one tap in its time slot. Blood pressure, sugar, oxygen, pulse, temperature and weight go in within seconds and are screened against per-person thresholds, red flags raised on the spot; Telegram delivers the reminder when a slot comes due. The entire datastore is a Google Sheet a human can open and hand-correct on any device, one Apps Script stands as the only code permitted to touch it, and the whole system runs on nothing a month. Above it all, one law: the app never calculates, changes or recommends a dose. Where the doctor's instructions end, the app does not improvise; it writes "ask the doctor" and stops.

The result

From design document to live, fully activated system inside July 2026, and in private daily use from then on. The report page condenses weeks of readings into a printable summary a doctor can absorb in the first minute of a consultation; the dashboard answers, from any distance, the question that used to need a phone call. It is software shaped around its users, doing its one job with the whole of its attention.

What it taught

The discipline this project demanded was subtraction. Its users set the standard absolutely: every screen has to be understood without explanation. So "build for purpose" stopped being a slogan and became the filter every idea had to pass: does this serve the next dose, the next reading, the next consultation? Only what answered yes was built. Do not overbuild sounds like modest advice. Practised on software people depend on every day, it turns out to be a form of care.

Source: Confirmed directly by the owner · confirmed 2026-08-20

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