Bubble Level: Truesight

Ever needed to hang a picture straight, check if a shelf is even, or measure the exact angle of a slope but didn't have a real spirit level handy? Bubble Level: Truesight turns your phone into a precision inclinometer and relative protractor that lives in your pocket. Using your device's motion sensors, it reads angles in real time and tells you the moment something is perfectly aligned. Whether you're a tradesperson, a weekend DIYer, a photographer, or an artist, Truesight gives you a dependable, calibrated level wherever you are.

What sets Truesight apart is its focus on genuine accuracy. Instead of trusting raw sensor data, it lets you calibrate your device so readings reflect true level, then locks onto alignment with clear visual, audible, and tactile feedback. A guided setup quiz tailors the app to how you actually work, and thoughtful options like freeze/hold, relative measurement, and adjustable snap tolerance make it feel like a professional tool rather than a gimmick.

KEY FEATURES
• Precision Level - Read pitch and roll in real time, holding your phone flat or on its edge, with the app confirming when a surface is straight, level, and true.
• Angle Finder - Measure the live, uncalibrated angle of any surface for quick reference when you just need a number fast.
• Relative Protractor Mode - Set a zero reference against one surface, then measure the angle of a second relative to it, perfect for matching slopes and offsets.
• Guided Calibration - Run a quick single-point zero or a full 2-point calibration that cancels sensor bias for absolute precision, with clear step-by-step direction prompts.
• Freeze & Hold Reading - Lock the current measurement on screen so you can read it comfortably even after moving the phone away.
• Level Lock Feedback - Get an audio beep, a haptic vibration tick, a system tone, or a visual-only indicator when perfect alignment is reached, exactly how you prefer.
• Adjustable Snap Tolerance - Tune the level-locking range so the app snaps to level within a window that matches your job's precision needs.
• Personalization Quiz - Answer a short setup quiz about your primary use, preferred unit, and notification style so Truesight fits Professional Trades, DIY, or Photography and Art work.
• Angle Unit Choice - Pick your preferred inclination unit as your primary readout across every screen.
• Hardware Diagnostics - Check sensor accuracy status and view current database calibration offsets to confirm your device is measuring reliably.
• Theme Options - Choose an active color theme, including an AMOLED mode for deep blacks on compatible screens.
• Maintenance & Reset - Clear zero references, reset to factory calibration, retake the setup quiz, or replay the welcome guide anytime.

HOW IT WORKS

Complete the quick onboarding tutorial and personalization quiz to set your use case, unit, and alerts.

Calibrate your device with a quick zero or full 2-point routine for trustworthy readings.

Lay the phone on any surface and watch the live level respond, with feedback the moment it locks to true.

Use Angle Finder or Relative Mode when you need to measure or match a specific slope.

PRIVACY
Truesight is fully offline. There is no account to create, no network calls, and no ads. Your calibration data stays on your device.

Stop guessing whether that frame, shelf, or table is level. Download Bubble Level: Truesight and carry a calibrated, precise inclinometer everywhere you go.