Free forever

WHY DIDTUESDAY'S SHOTTASTE BETTER?

Puck Yeah is the espresso tracker that remembers for you. Every dose, yield, time, grind and bean. So when a shot hits, you can pull it again.

What it actually is

Every shot goes in. Dose, yield, time, grind, temp, pressure, what it tasted like, how you rated it, a photo of the pour if you're feeling it. The app does the maths. Your history writes itself.

Over a few dozen shots, patterns start showing. That Ethiopian natural tastes best at 1:2.4. Your grinder drifts coarser after 60 shots. Your morning shots out-rate your afternoon shots by a point and a half. Jarvis, your on-device coffee companion, spots those patterns and starts suggesting grind and dose tweaks before you brew.

Open app. Tap plus. Log shot. A short wizard walks you through dose, yield, time, grind and taste in under a minute. No signup, no onboarding quiz, no paywall waving at you from the corner.

The rules around here

01
Free. All of it.
Every feature. Forever. No tiers, no paywalls, no trial timer counting down.
02
No signup. Ever.
Open the app. Start logging. No email, no password, no social logins to wrangle.
03
Your data, your device.
Shot history lives on your phone by default. Export everything as JSON or CSV any time. Zero lock-in.
04
Works without wifi.
Native iOS or PWA, built offline-first. Espresso machines live on benches, not routers.
05
Every machine, every grinder.
From Gaggia to Decent, hand grinder to commercial flat. The grinder database knows your step size.
06
Fast to log.
One-handed, designed to happen while the puck is still extracting. Seconds, not minutes.

What it isn't

Call it the anti-feature list.

A subscription gating your own data.
An ads platform. You're not the product.
A checkout for affiliate beans and branded tampers.
A 12-screen onboarding with a personality quiz.
A tutorial that needs a tutorial.
An LLM phoning a cloud API. Jarvis stays on your device.

Meet Jarvis

Your coffee companion

Jarvis lives on your device. He watches every shot you log, spots patterns across beans and grinders, congratulates you when you nail a dial-in, ribs you when you pull four sour shots in a row. Zero LLM calls, zero data leaving your phone. Just a coffee-obsessed little robot that's read every shot you've ever logged and has opinions.

The receipts

Built by: Alex. One solo, heavily caffeinated dev.
Released: January 2026 (iOS)
Platforms: iOS 15+, Web (PWA)
Price: Free. No subscription. No paywalls.
Your shots: On-device by default. Export as JSON or CSV any time.
Community features: On by default. Anonymised, aggregated contributions only. Disable any time in Settings.
Analytics: Anonymous, cookie-free (datafa.st, Umami)
Built with: Next.js, TypeScript, Tailwind, Capacitor, Swift, Supabase, RevenueCat, Framer Motion
Based in: Sydney, Australia