01 Home
Today, beans, experiment, trends
- Today card
- Beans section
- Active experiment
Brew experiment workspace
Hook up the scale. Evolve the recipe.
BLE scale streaming, A/B brew experiments, flow rate curves, versioned recipes, espresso dial-in, and full data export. Built for coffee geeks who run experiments.
BLE scale streamingA/B experimentsRecipe forkingFlow rate curves
Real app surfaces
Inside the app
Four core tabs plus widgets cover the main workflow.
Workflow map
How the four tabs split responsibility
Home surfaces stats and experiments, Brewing handles BLE scales and A/B tests, Logs support retrieval and export, Settings holds devices, sync, and privacy.
01 · Home
Real tabToday stats, bean inventory, active experiment return, trends, and task reminders.
02 · Brewing
Real tabBLE scale streaming, quick brew, guided sessions, recipe library, and A/B experiment setup.
03 · Logs
Real tabSearch, filters, heatmap, sensory scores, and batch export to JSON/CSV/PDF/text.
Home → Brewing → Logs, with Settings holding the system layer
Four tabs, each with a clear job. Widgets and Dynamic Island extend the workflow outside the app.
02 Brewing
Live workspace and recipe actions
- Instrument panel
- Quick brew
- Recipe library
03 Logs
Searchable records and heatmap
- Search
- Date filters
- Statistics section
04 Settings
Devices, sync, privacy, widgets
- BLE management
- Optional sign-in + sync
- Privacy controls
The experiment loop
Built for people who run experiments
This app assumes you already know what you're doing. It systematizes your experiment workflow — it doesn't teach you how to brew.
Full data chain
Core capabilities from the experiment workflow: BLE data capture, controlled variable testing, recipe evolution, and full export portability.
Scale
BLE scale streaming with flow rate
Acaia, Timemore, and compatible scales. Weight + flow rate, live.
A/B
2–5 variant experiments on 6 variables
Temperature, grind, dose, water, ratio, time. Side-by-side comparison after each run.
Recipes
Every tweak gets a version number
Parent link, changelog, full history. Fork a recipe, evolve it, trace decisions back.
Espresso
Dial-in with extraction feedback
Dose/yield/time in, extraction assessment and adjustment suggestions out.
Guided
Immersive step-by-step brewing
Phase timing, live scale overlay, Dynamic Island on lock screen.
Export
JSON / CSV / PDF / text
Single or batch. No paywall. Your data, always portable.
Scale
BLE scale streaming with flow rate
Acaia, Timemore, and compatible scales. Weight + flow rate, live.
A/B
2–5 variant experiments on 6 variables
Temperature, grind, dose, water, ratio, time. Side-by-side comparison after each run.
Recipes
Every tweak gets a version number
Parent link, changelog, full history. Fork a recipe, evolve it, trace decisions back.
Espresso
Dial-in with extraction feedback
Dose/yield/time in, extraction assessment and adjustment suggestions out.
Guided
Immersive step-by-step brewing
Phase timing, live scale overlay, Dynamic Island on lock screen.
Export
JSON / CSV / PDF / text
Single or batch. No paywall. Your data, always portable.
FAQ
Common Questions
This public site only describes capabilities that are verified in the app and supporting documentation.
Is BrewTinker local-first or cloud-only? +
BrewTinker works as a fully local app by default. Signing in and enabling sync is optional.
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.
What data is synced to the cloud? +
When sync is enabled, brew records, beans, recipes, and equipment sync through Firebase Firestore. Bean images can also be uploaded to Cloudflare R2 through a secure proxy.
Does BrewTinker collect analytics? +
Analytics is opt-in and off by default. Crash reporting is on by default but can be disabled at any time in Settings → Data & Privacy.
What can I export? +
You can export individual brews as text, PDF, image, or JSON, and batch export brew history as CSV, JSON, or text.
What languages does the app support? +
BrewTinker currently supports English, Simplified Chinese, Japanese, Korean, and German. This site currently publishes legal pages in English, Simplified Chinese, and German.
Ready to experiment
Run your next experiment.
BLE scale data in, versioned recipe out. Download, run one real session, and decide from actual workflow fit.
iPhone app5 languagesNo paywall
Get started
The product is the iPhone app
Download, connect your BLE scale, run one real A/B session, and decide from actual workflow fit.
Get started
Your data stays portable
JSON, CSV, PDF, plaintext export. Local-first storage. Cloud sync is optional, not required.
Get started
Privacy is a first-class control
Analytics opt-in, crash reporting opt-out, no paywall on exports. Read the privacy policy before you decide.
