🔒 Demo mode — browse freely, but changes are disabled — Self-host your own instance

Blunder Tutor

Settings

Preferences, appearance, and sync settings

Language

Choose the display language for the application.

Feature Visibility

Show or hide parts of the interface to keep things clean.

Pages
Trainer
Dashboard Charts
Automation
Developer

Automatic Sync

Automatically fetch new games at regular intervals
Maximum number of games to fetch during each sync
Run analysis on newly fetched games

Training Settings

Don't show correctly solved puzzles again for this many days

Board Appearance

Customize the chessboard colors and piece set.

Theme Colors

Choose a preset or customize individual colors.

Accent Colors

Buttons, links, navigation
Positive feedback, completed
Errors, blunder highlighting
Warnings, user moves

Game Phase Colors

Background & Text

Activity Heatmap

Preview
Warning
Opening Middlegame Endgame
Activity Heatmap
Cancel