Trueline vs Digital Level

Trueline turns your iPhone into a level that behaves like a real instrument — quiet, readable, and honest about what it measures. Free: • Auto-switching modes — on edge or plumb you get a vial with a signed degree readout; laid flat it becomes a 2-axis bullseye surface level • Read in degrees, slope %, or roof pitch (rise per 12) • One-tap calibration • HOLD freezes a reading you can't see from where you're standing • ZERO for relative angles — the angle between two surfaces • Haptic snap and a green edge glow the moment you're level • Fully offline, no account Pro — one payment of $6.99, no subscription: • AR laser level: project gravity-true level and plumb lines onto the wall and hang a whole row of frames in one pass • Named angle presets — 4/12 and 6/12 roof pitch, stair rake, 2% drainage • Precision tolerance down to ±0.1° • 5 instrument themes • No ads Pay once, yours forever. No subscription, no sign-in, and nothing leaves your phone.

Free. No ads, no in-app purchases, no tracking. Digital Level turns your phone or tablet into a professional bubble level, inclinometer and angle meter. Hang a picture, mount a shelf, install an appliance, lay tiles, level a tripod or check a surface — accurate readings are always one tap away. WHY DIGITAL LEVEL • Realistic bubble level with smooth animation • Digital inclinometer with degrees and slope percentage • Horizontal, vertical and 360° modes • Manual calibration for maximum accuracy • Works fully offline, no unnecessary permissions • Clean, high-contrast UI readable on the job site • Automatic light and dark theme • Optimized for phones and tablets, portrait and landscape KEY FEATURES • 2D bubble level for flat surfaces (tables, floors, furniture) • 1D bubble level for horizontal and vertical lines (frames, shelves, doors) • Real-time angle and slope meter • Audio and visual feedback when the surface is perfectly level • Quick save of a reference position • Screen lock to read the value without moving the device USE CASES • DIY and home improvement • Masonry, carpentry and plumbing • Tiling, parquet and flooring • Mounting furniture, shelves, pictures and wall-mounted TVs • Installing washing machines, fridges and dishwashers • Aligning tripods, cameras and solar panels • Checking the slope of ramps, drains and roofs • Leveling RVs, caravans and boats ACCURACY & CALIBRATION Accuracy depends on your device's accelerometer. For best results, calibrate on a known flat surface — it takes a few seconds and Digital Level stores the correction for you. PRIVACY No account, no sign-up, no tracking. Digital Level does not collect personal data and works completely offline. Download Digital Level now and always carry a bubble level, an inclinometer and a protractor in your pocket — free and without intrusive ads.