Tipsy Tab — your tab
A live drink tracker styled as a pile of paper receipts on a bar table. Log
drinks with a tap, watch an estimated BAC drift in real time, and pin the vibe
you want to hold tonight — the app times your next pour to keep you there.
Live: https://tipsy-tab.vercel.app —
installable PWA, add it to your home screen.
How it works
- A new receipt asks before it assumes: who it's for, which body (for the
math), roughly how heavy — and hands over a pen. Slide the weight ruler
to set it; drag written numbers sideways to edit them.
- One lamp over an oak bar top. Every person gets a thermal receipt; the pile
is physical — the paper lifts and follows your finger, throw it sideways
for the next person's tab, pinch to set everything on the table.
- The printer states the facts in dot matrix and condensed mono: the BAC,
a dither-printed chart of the night, every pour as a line item, totals,
a barcode. Then the table writes all over it: the name, how you're
feeling (underlined neatly when sober, loopier later), when the next pour
is, a loop round "now", friends' doodles and notes in their own inks.
Doodles draw into paper slots and beside ledger lines as pours land,
staying where they were left; a drawn face follows the level.
- The bar has a voice too: black brush marker, a line for what's happening
at the table, always signed “— the bar”.
- Drinks are glasses on the rubber bar mat. Tap one to drink it; it drains
and refills over exactly the wait the pace asks for. Water is on the mat
from the start. Write your own house special on a cocktail napkin — circle
a pint, mug, can, bottle, wine,
bubbly, highball or rocks and a rough strength.
- Circle a vibe to hold it (barely · relaxed · tipsy · loose) — a highlighter
band marks it on the chart and the pen judges the pace: on pace ✓ / easy now… /
slow down! / cut off. Above those, the receipt keeps calling the level:
drunk, wasted and beyond.
- Every pour leaves a glass ring on the wood that dries as the night goes
on, and the room closes in a little as your estimate climbs.
- On the table: everyone's receipt at a glance, a beer coaster with a QR to
bring a friend's phone to the table, a receipt printer to tear off a tab
for a newcomer. Share the table by QR, by reading out the code, or by
sending the link; a friend can type the code in on the back of their
coaster. Phones sync through an encrypted relay, including on mobile
data. Cut along the scissor line to close the tab and keep the receipt
with "paid!" scrawled across it.
BAC is estimated with the Widmark formula. Solo tabs stay in your browser's
localStorage. Shared tables send encrypted copies through a server relay; its
storage expires after 24 hours without updates. No accounts are needed.
Development
Requires Node ≥ 20 (see .nvmrc) and Bun.
bun install
bun run dev # http://localhost:5174
bun run test:run # vitest
bun run build # production build (dist/)
Deploys to Vercel (bunx vercel deploy for previews, bunx vercel deploy --prod --yes for production).
Design specs and implementation plans live in docs/superpowers/.
The important note
This is an educational toy. Real impairment depends on food, hydration, sleep,
medication, metabolism, and more. Never use this to decide whether you can
drive — the answer after drinking is no.
License
MIT
