iPad & iPhone

Bubble Level - Super Easy App
Utilities
Bubble Level + Spirit Level
Utilities
Ruler Pro - Measuring Tape
Productivity
Measure App - 10 Tools to Go
Productivity
Tools to measure Multitool
Productivity
Tape Measure - Ruler - AR App
Utilities

iPhone

Apple Watch

Ruler Pro - Measuring Tape
Productivity
Tape Measure - Ruler - AR App
Utilities
Angle Finder & Leveling Tool
Utilities
Measure Angles Pro Level Tool
Utilities
Angle Finder - Digital Measure
Utilities