iOS coffee brewing experiment log
Log every brew, improve the next one.
BrewTinker combines guided brewing, bean inventory, A/B experiments, exports, widgets, and optional cloud sync in one iOS app.
Built around Home, Brewing, Logs, and Settings, with widgets and a bean library for day-to-day workflow.
The full brewing workflow
From quick brews to long-term iteration, BrewTinker keeps your data, devices, and beans in one place.
Quick brews, guided flows, and A/B tests
Switch between quick brew, immersive recipe guidance, and side-by-side A/B comparisons with shared timers and stage cues.
Bean library and brew insights
Track origin, roast date, stock, freshness, price, and photos, then surface parameter suggestions from your best cups.
Detailed logs, exports, and widgets
Capture brew parameters, tasting notes, and six-dimension sensory scores, then export as CSV, JSON, or text and pin key stats to widgets.
Devices, sync, and privacy controls
Connect supported Acaia, Timemore, and Inkbird devices. Stay local-only or sign in for Firestore sync and Cloudflare R2 bean image storage.
Inside the app
BrewTinker is organized around four primary tabs plus widgets.
Home Dashboard, Brewing Workspace, Brew Logs, and Settings support daily use; widgets surface brew counts, ratings, and bean freshness at a glance.