Multi Angle Meter vs ZenLevel

INSTRUCTIONS When the iphone is tilted, the tilt angle is displayed in the three axes of yaw, pitch, and roll. Long-tap the number of an angle degree on the screen: The angle is set "On the ground" is displayed in the upper left corner of the screen.　 Double-tap the number of an angle degree on the screen: The angle is reset and "On the table" is displayed in the upper left corner of the screen. Each time you double-tap, the angle is reset. Long press the number of an angle degree on the screen to initialize the angle. The angle based on the ground is displayed. "On the ground" is displayed in the upper left corner of the screen. Setting: You can set the angle notification function. *Screen Description On the ground: Default value. Displays the angle to the ground. On the table: Displayed when the angle is reset. Yaw: Rotation angle of the horizontal plane with the vertical axis. If the Angle Notification function is set to On, the angle will be displayed in red from ±2 degrees of the set angle. If Vibration is set to On, The angle is displayed in red letters with vibration. Roll: Angle of rotation on the front-back axis. If the Angle Notification function is set to On, the angle will be notified in orange from ±2 degrees of the set angle. (If Vibration is turned on, The angle is displayed in orange letters with vibration. Pitch: Angle of rotation on the left/right axis. If the Angle Notification function is set to On, the angle will be notified in green from ±2 degrees of the set angle. (If Vibration is turned on, The angle is displayed in green letters with vibration. Tap the Stop button to stop the measurement; tap the Start button to resume measurement. Tap the camera button on the screen to activate the camera for the live view screen. Tap the screen while the camera is paused to display angle guides (protractor lines). You can add up to five. Setting: Displays the angle set by the angle notification function on the Setting screen.When the toggle button is turned on, the color of the numbers changes from +/- 2 degrees of the set angle.If you turn on the Vibration and Sound buttons, you will be notified with vibration and sound .You can choose to display the angle as an integer or a decimal. Note: The angle displayed is the angle detected by the gyro sensor of this iphone. To measure the angle accurately, use a calibrated angle meter or inclinometer instead of this application.

ZenLevel turns your iPhone into a precision inclinometer with the calm, deliberate feel of a real machinist's instrument. Built for builders, DIYers, photographers, woodworkers, and anyone who needs something perfectly level, perfectly plumb, or at exactly the right slope. FOUR MEASUREMENT MODES SURFACE — Lay your iPhone flat on a countertop, shelf, or picture frame. The two-axis bubble instrument shows the exact inclination, with digits that roll smoothly between values like a laboratory dial. When you find true level, the interface shifts to a calm, luminous green. PLUMB — Press the back of your iPhone against a vertical surface to check whether it is truly vertical. A tall bubble tube rises and falls with the wall's deviation, and a "check position" warning tells you when the phone is too flat for an accurate reading. CALIBRATE — Every sensor drifts. Place your phone on a surface you trust, wait for the stability meter, and tap ZERO OUT. Offsets persist across launches, and Reset calibration restores factory defaults at any time. HISTORY — Save any measurement to a log grouped by day. Tap an entry to see its details, edit its note, or delete it. HOLD THE READING Measuring under a shelf or behind a cabinet? Tap HOLD to freeze the reading, then take your iPhone out and read it — or save it — at your leisure. Tap RELEASE to go live again. SLOPE UNITS Show every reading in degrees, percent grade, millimetres per metre, or inches per foot. Rise-over-run units make drains, ramps, patios, decks, and gutters easy: a quarter inch per foot is simply 0.25 in/ft. Saved measurements follow your chosen unit and keep the original angle alongside. LANDSCAPE PRECISION MODE Rotate your iPhone to landscape and SURFACE becomes a long horizontal bubble vial for checking frames, shelf edges, and countertops along their length. A tipping indicator helps you keep the phone upright to avoid projection errors. DESIGN THAT FEELS LIKE A REAL TOOL • Deep blacks, subtle glass panels, and a signature zen-green accent • Rolling digit transitions on every live readout • Haptic feedback on level, save, calibration, and tab changes • Rotation-lock detection that guides you when iOS is locked to portrait • Decorative animations pause when Reduce Motion is on PRIVACY FIRST, BY DESIGN • No accounts, no login, no cloud sync • No tracking, no analytics, no advertising • No network requests of any kind • Measurements and calibration stay on your device • No third-party SDKs WHO IT'S FOR • Carpenters and builders checking walls, cabinets, and frames • Plumbers and landscapers setting drain and patio falls • DIY homeowners hanging shelves, pictures, TVs, and mirrors • Photographers aligning tripods and subjects • Woodworkers checking joinery and surfaces ZenLevel isn't a novelty. It's a precision instrument that lives in your pocket, ready to settle "is this level?" in seconds.