Fix My Coffee
The problem

Sour. Bitter. Never the same twice.

Good beans, a decent grinder, and the cup still misses. Too many variables, and they hide behind each other.

Three steps

Say what is wrong. Get one thing to change.

The app does not lecture you. You rate the brew, and you get a specific move back: grind finer, more dose, less water.

What you brewed

What you brewed — method, grinder clicks, dose and water. The ratio works itself out.

How it landed

How it landed — two axes: taste runs sour to bitter, body runs light to heavy.

What to change

What to change — one sentence, the new numbers, and the delta. Here: −2 clicks, +1 g.

The model

Two axes, one target.

BALANCED FINER LESS COFFEE COARSER LESS COFFEE FINER MORE COFFEE COARSER MORE COFFEE SOUR BITTER HEAVY LIGHT
Each quadrant shows the correction the app gives in that state. The centre is the target.

The whole app sits on this picture. Sour and bitter are two ends of one axis; light and heavy body are the other. The further your rating sits from the middle, the bigger the correction.

The shelf

Coffees you can actually buy in Türkiye.

The shelf

Turkish roasters, with full specs and where to buy them. The ones I have tried carry my own tasting note and score.

See the shelf

Guide

Short answers.

You do not need the app for these — the most common questions are answered right here.