Free measurement tools. Optional Pro workflow.

TrueLevel

Turn your iPhone into a practical bubble level, angle finder, and protractor for carpentry, installation, and DIY checks. Bubble Level, Angle Finder, and calibration remain available without a purchase.

Bubble level

Check surface level with live dual-axis degree readouts.

Angle finder

Read angles, percent grade, and rise-to-run from one clear display.

Pro workflow

Unlock saved readings, Lock & Hold, plumb mode, and haptic confirmation when you need them.

Choose your Pro access

Weekly — $1.99 per week: eligible customers receive a 3-day free trial, then the subscription renews weekly unless canceled.
Yearly — $9.99 per year: renews yearly unless canceled; no free trial.
Lifetime — $14.99 once: one-time purchase; no free trial or renewal.

These are U.S. base prices. Apple shows the applicable localized price and confirms any trial eligibility before purchase. Existing lifetime purchasers keep their Pro access and can use Restore Purchases when needed.

Measurements depend on device sensors, placement, case, and calibration. Use professional tools for safety-critical work.