Coffee geek experiment bench

Tweak the variable. Evolve the recipe.

A focused iPhone app for people who change brew variables on purpose and want to see what actually changed the cup.

A/B experimentsBLE scale dataRecipe versions

Version 1.0 is currently in App Store review. This page shows the implemented core workflows only.

BrewTinker home dashboard showing brew stats and experiments
BrewTinker brew session screen with live brewing data

What's inside

What's inside

A shorter view of the product: brew with live data, keep recipes and beans organized, then review and export what happened.

01

Brew with live data

Run quick brews, guided sessions, espresso dial-in, and A/B tests with live BLE scale data.

  • Acaia and Timemore support
  • 2-5 variant experiments
  • Phase timing and flow rate
02

Keep recipes and beans organized

Track recipe versions, bean inventory, freshness, and the changes behind each result.

  • Recipe forking and history
  • Bean stock auto-deduction
  • Low-stock and freshness tracking
03

Review, export, and stay in control

Search logs, compare results, export records, and keep sync and analytics optional.

  • Search and filters
  • JSON / CSV / PDF / text export
  • Local-first with optional sync

Real app surfaces

Inside the app

Five core tabs cover the main workflow without overlap.

Workflow map

How the five tabs split responsibility

Home shows status, Brewing runs the session, Beans manages stock, Logs keep records, and Settings holds devices, sync, and privacy.

Five tabs, each with one clear job

The app is split by task, not by marketing labels. It should be obvious where brewing happens, where records live, and where privacy settings sit.

01 Home

Today, experiment, trends

  • Today card
  • Active experiment
  • Insight grid + tasks
02 Brewing

Live workspace and recipe actions

  • Quick brew + BLE auto-dose
  • Guided brew + A/B
  • Espresso Dial-In
03 Beans

Inventory, freshness, profiles

  • Auto-deduction on save
  • Freshness tracking
  • Low-stock alerts
04 Logs

Searchable records and heatmap

  • Search + date filters
  • Sensory radar scores
  • Single or batch export
05 Settings

Devices, sync, privacy, widgets

  • BLE management
  • Optional sign-in + sync
  • Privacy controls

FAQ

Common Questions

Only practical questions are kept here. Repeated feature summaries have been removed.

How do I add a brew record? +

Open the Log tab and tap the add button in the top-right corner. You can also save directly after finishing a brew session.

How does cloud sync work? +

Data Sync is local-first. Your brews stay on device, and signed-in users can sync manually or enable auto-sync in Settings > Data Sync.

What devices can it connect to? +

The current supported device families are Acaia scales, Timemore scales, and Inkbird thermometers. Actual compatibility can still vary by model, firmware, and iOS environment.

How do I delete my account? +

Open Settings, tap your profile, scroll to the danger zone, and choose Delete Account. A recent sign-in may be required before cloud and local data are removed.

Support

Still need something specific?

Contact [email protected]

Ready to experiment

See the product before it goes live.

The app is still in review, so this page stays focused on the real 1.0 scope instead of pushing a broken download path.

iPhone appVersion 1.0 in reviewNo paywall
Review core workflows Read privacy policy

Current status

What you see here is the 1.0 scope

This page focuses on the core workflows already implemented in the submitted version.

Current status

Data and privacy stay under user control

Export is open, analytics is opt-in, and sync remains optional.