Brew Diary
Structured log of every brew you've made.
Every dose, grind, ratio, time, equipment, recipe, and taste score — searchable and filterable.
Coffee data platform
A coffee data platform for everyone who brews.
Log every variable behind your brews — dose, grind, temperature, time, equipment, taste. Cup with others, share notes, see which variables actually moved the cup. Repeat the work worth repeating.
The loop
How Coffier makes your coffee repeatable.
One short loop, run on every brew. No streaks, no badges — just the structured signal you need to dial a coffee in.
01
Log the brew
Dose, yield, grind, water, time, equipment, taste scores. Structured fields, not prose.
02
Compare the variables
Side-by-side parameters across brews of the same coffee. Spot what actually changed.
03
Understand what changed the cup
See which variables — grind, ratio, temperature, time — correlate with your taste scores.
04
Build a personal brew dataset
Every brew compounds into a structured history of your coffees, methods, and results.
Analytics
Three surfaces for understanding your coffee.
Analytics is not a side panel in Coffier. It is the product. Three named surfaces, each with one purpose.
Variable Impact Analysis
Which variables actually moved the cup.
Correlations between grind, dose, water temperature, and time — and the taste scores that followed.
Brew Comparison Lab
Hold variables constant. Change one. See what happened.
Pin two brews of the same coffee. Coffier highlights the variables that differ and the resulting taste delta.
Personal dataset
The longer you log, the more Coffier is worth.
A brew dataset is not a feed. It is a structured record of what you actually did and what came out of the cup. Over months and years it becomes the source of truth for how you make coffee.
Trends across coffees and methods
How a Kenyan washed performs on V60 versus Aeropress in your hands, not in the abstract.
Repeatability over time
Track how tightly your brews of a given coffee cluster as you dial it in.
Controlled variable changes
Hold ratio constant, change grind. Hold grind constant, change temperature. Watch the scores follow.
Coming to Coffier
Compare recipes with brewers who care as much as you do.
A future layer of Coffier will let you compare your recipes for the same coffee against other brewers — anonymised by default, opt-in for sharing, structured so the comparison is meaningful. No feed, no follower counts.
Start building your brew data.
One log a day is enough to start seeing patterns. Coffier handles the structure so you can focus on the cup.