MeasureDeck

MeasureDeck is a calibration-first pocket ruler designed for fast everyday screen measurements, on-screen comparisons, and lightweight unit conversion.

Measure in three modes
- Point mode — Tap to mark a single position and read the value
- Span mode — Drag two markers to measure the distance between them
- Area mode — Estimate rectangular surface dimensions in real time

Unit conversion
Quickly convert between centimeters and inches with a live preview. Save conversions for later reference.

Precision Lab
Train your touch-screen alignment with interactive challenges. Each attempt is scored, and your best score is tracked over time.

History & data management
All measurements, conversions, and training attempts are automatically saved. Browse, review, or delete individual entries — or clear all history with one tap.

Calibration control
Fine-tune the on-screen scale with a dedicated calibration slider to match a known reference card or ruler. Portrait-only layout ensures consistent alignment.

Privacy-first
No account required, no data collected, no ads. Everything stays on your device.