Precise Bubble Level vs Trueline

Get perfectly level results every time. Precise Bubble Level uses your iPhone's built-in sensors to deliver real-time, precise angle and tilt measurements — no internet required, no account needed. Whether you're hanging a picture frame, installing shelves, aligning furniture, or working on a construction project, Bubble Level gives you the accuracy of a professional tool right in your pocket. FEATURES - 4 Leveling Modes: Horizontal, Vertical, XY-Axis, and Auto mode that switches automatically as you rotate your device. - Real-Time Precision: Live angle readings update instantly as you move. - Calibrate & Lock: Calibrate to any surface and lock for hands-free measurements. - Save Readings: Store measurements for reference throughout your project. - Haptic & Sound Feedback: Feel and hear when you've hit a perfectly level position. - 100% Offline: No Wi-Fi, no account. Your data stays on your device. PERFECT FOR - Hanging picture frames and artwork - Installing shelves, cabinets, and furniture - Construction and carpentry work - Plumbing and pipe alignment - Photography and tripod setup - DIY home improvement projects - Tile and flooring installation PROFESSIONAL ACCURACY Bubble Level uses your device's gyroscope and accelerometer for high-confidence readings with near-zero margin of error. Calibrate once and trust every measurement that follows. SETTINGS YOUR WAY Choose your unit (degrees or percent), toggle haptic and sound feedback, switch between light and dark themes — Bubble Level adapts to how you work. Download Bubble Level and bring professional-grade leveling to every project. LEGAL Privacy Policy: https://ergunsu.com/apps/bubble-level/privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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.