# Bubble Level-Spirit Level Tool > Bubble Level-Spirit Level Tool (iPhone/iPad app by 璇 冯.) - Source: https://appshunter.io/ios/app/bubble-level-spirit-level-tool/id6814698018 (this page in markdown: same URL + `.md`) - Developer: [璇 冯](https://appshunter.io/developer/1858747919) - Category: Utilities - Price: Free - Age rating: 17+ - Requires: iOS 17.0 · 6 MB - Languages: English, Chinese - Released: 2026-10-13 - Data updated: 2026-10-15 ## What is Bubble Level? Transform your iPhone into an ultra-precise dual-axis spirit level and angle inclinometer. Whether you are hanging wall pictures, aligning furniture, leveling an RV camping vehicle, setting up a camera tripod, or checking construction slopes, this app delivers industrial-grade precision with tactile realism. KEY FEATURES Realistic Dual-Axis Physical Gauges • Circular Bullseye Surface Level: 360-degree omnidirectional pitch and roll leveling for tables, shelves, countertops, and appliances with concentric degree guide rings. • Fluid Spirit Vial: High-contrast tube with realistic physical bubble dynamics for edge alignment, plumb-line vertical checks, and woodwork. Patented 180-Degree Reversal Zero-Drift Calibration • Uneven phone cases, protective bumpers, or protruding camera bumps? No problem! • Perform a quick 180-degree rotation on any flat surface: our reversal algorithm calculates and eliminates sensor drift and hardware bias instantly, revealing the true absolute level of the surface. Automatic Seamless Edge Detection • No manual switches needed! Hold your phone vertically for instant short-edge leveling. Turn it horizontally, and the app automatically switches to an ultra-wide landscape cockpit long-edge level. Eyes-Free Acoustic Audio Guidance • Level by sound without staring at your screen! • Geiger Clicker: Pulse frequency accelerates as you get closer to 0.00 degrees. • Pitch Glide: Smooth audio frequency glide indicating tilt direction. • Crisp audio chime & gentle haptic pulse upon reaching perfect level. Includes an instant global mute button in the top bar. Camera Live Inspector & Construction Watermark • View live camera feed with an overlaid crosshair horizon line and 3x3 composition grid. • Perfect for hanging large wall art, curtain rods, projection screens, and checking doors or windows. • Capture photos with certified measurement watermarks including timestamp, tilt angle, GPS location, and inspector notes. Professional Slope & Angle Units • One-tap instant toggle between Degrees and Slope Percentage (%). • Tare Zero (Relative Angle): Zero out any slope or incline to measure angles relative to an existing surface. 4 TAILORED SCENARIO PRESETS Picture Hanging: Edge alignment with sensitive vibration and chime guidance. Table & Furniture: Bullseye dual-axis surface leveling for 3D printers, stoves, and desks. Photography: Live camera horizon alignment for landscapes and architectural shots. RV & Outdoors: High-damping slope leveling for trailers, vans, and motorhomes. PRIVACY FIRST & 100% OFFLINE • 100% Offline: Inertial motion sensing calculations are performed purely on your device. • Zero ads, zero trackers, and no mandatory in-app subscriptions. • Does not collect personal data. Precision in your pocket. Download now and level with confidence! ## Is Bubble Level safe? Not enough ratings yet to assess Bubble Level. ## Is Bubble Level legit? Bubble Level-Spirit Level Tool has limited verification signals. The AppsHunter Legitimacy Score for Bubble Level is 55 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 1 release) ### 1.0 — 2026-10-13 No release notes. ## More apps by 璇 冯 - [Video Compressor - GIF MP4](https://appshunter.io/ios/app/video-compressor-gif-mp4/id6759241854) - [Ponics - Learn Phonics & ABC](https://appshunter.io/ios/app/ponics-learn-phonics-and-abc/id6770489598) - [Stepwise: Step & Walk Tracker](https://appshunter.io/ios/app/stepwise-step-and-walk-tracker/id6802314877) All apps by 璇 冯: https://appshunter.io/developer/1858747919 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-15.*