Optimize your layout with your own typing data

KeyLens tracks your keystrokes locally and recommends layout changes based on how you actually type.

KeyLens Hero Interface

Why KeyLens?

What KeyLens tracks and shows.

Keystroke Tracking

Tracks bigrams, trigrams, and modifier usage to map your typing behavior.

Heatmap Visualization

2D heatmaps showing key frequency by day of week and hour of day.

Layout Simulators

Simulate how your speed and distance metrics would change across QWERTY, Colemak, Dvorak, or custom layouts.

See It in Action

Real screenshots from the app — your data, visualized.

Typing Profile Weekly Summary Weekly Report Today's Fatigue Curve Sessions

Privacy Focused

KeyLens records anonymous frequency counts for keys, pairs (bigrams), and triples (trigrams). It never records full text or passwords. All data is stored locally on your machine. Zero cloud sync. Zero telemetry.

Local Storage Only
Open Source Engine
Anonymous Frequency Counts