A Little Tachy

Simple daily tracker for POTS

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Built with
Next.js
TypeScript
PostgreSQL
Notable features
Progressive Web App
Custom tracking
Status
Live
Category

Health

Platform

Web

Year

2025

Why it needed to exist

Managing POTS means tracking is your life

People managing POTS (Postural Orthostatic Tachycardia Syndrome) track water intake, sodium, symptoms, energy, heart rate, and sleep. These are usually scattered across notes apps or expensive, non-customizable, ad-filled trackers that treat every symptom as an isolated data point instead of a related picture. On hard days, fighting your own tools is the last thing you need.

How we shaped it

User experience first, then features

The creator has POTS and got tired of trying everything out there with nothing that worked right, so we delivered the exact solution. Every field, from sodium sources to symptom lists to daily goals, is customizable instead of generic. Intake, symptoms, and vitals are logged and editable to the minute. Every user's data fully isolated at the data layer. Sign-in is passwordless by design, and onboarding needs nothing but an email. The web app is clean, simple, ad-free, with no outside interests in your data.

What sets it apart

Built for one condition, not a wellness catch-all

Most symptom trackers are generic templates asking you to log everything and nothing. This one is built around the specific mechanics of managing POTS — sodium and water measured against goals that shift over time, energy tracked by hour, and symptoms tied to the exact moment they happened.

The biggest challenge

The goal that was true then, not the goal that's true now

Early on, goals were stored as a single value that got replaced every time a user updated it, which meant historical data was silently being compared against today's goals instead of the ones that were active at the time. The fix was structural: goals became a timeline of values instead of a single overwritable number, so every entry, past or present, is always measured against the goal that was actually true when it was logged.

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