Bubble Level & Inclinometer vs Ladder Angle Calculator

Bubble Level & Inclinometer turns your phone into a fast, trustworthy level and angle finder — for DIY, trades, and everyday fixes. Get a true reading in under a second: • 2D bullseye level for flat surfaces • Horizontal & vertical spirit level • Full inclinometer / angle finder in degrees, percent grade, mm/m and roof pitch (x:12) Built to be trusted: • Guided 180° calibration wizard — calibrate once, trust every reading • Tolerance mode with OK / NEAR / OUT haptic and sound guidance, so you can work without staring at the screen • Confidence bar shows how stable the reading is • Hold / Freeze, relative zero (Set 0), measurement history with CSV export, and a shareable measurement card Perfect for: • Hanging pictures, shelves and frames perfectly straight • Checking roof pitch and slopes • Leveling an RV, trailer, appliance or furniture • Tiling, decking, ramps and stairs • Woodworking angles, miter and crown molding No ads. No limits. No subscriptions. No data collected. Works 100% offline. Most level apps bury the measurement under ads and paywalls. This one doesn't. It stays out of your way, respects your privacy, and just measures — accurately, every time.

Set every ladder at the safe angle before you climb. LadderAngle finds the correct 4:1 lean (about 75.5°) from your wall height and ladder length, then lets you check the real angle live with your phone. Most ladder falls come from one thing: the wrong angle. Too steep and it tips back, too shallow and the feet slide out. LadderAngle turns the OSHA / HSE 1-in-4 rule into a two-second check — do the math first, then lean your phone on the rail and watch the on-screen angle turn green when it's right. WHAT YOU GET - The exact safe angle and base distance for your ladder, in metric or imperial - A clear SAFE / CAUTION / UNSAFE verdict as you type, so you never guess - A live inclinometer that reads the real ladder angle and locks the reading - A visual ladder diagram that updates as you change height, base or length - Saved setups for every ladder and job you check regularly - A built-in safe-setup checklist, 3-points-of-contact and duty-rating reference PERFECT FOR - Roofers and gutter cleaners setting extension ladders - Painters and decorators working off a lean-to ladder - Trade and construction crews who need an OSHA / HSE angle check - Home DIYers who want to climb without taking a chance WHY NOT JUST EYEBALL IT Guessing is exactly how ladders slide out. The 4:1 rule looks simple, but the base distance changes with every wall height — LadderAngle does that math instantly and then proves it against the real angle with your phone's motion sensor. No tape measure, no protractor, no maths in your head. PRIVACY Fully offline. No account, no ads, no tracking, no data leaves your phone. FULL ACCESS LadderAngle Pro unlocks the full app — the live inclinometer, unlimited saved setups, the complete safe-setup checklist and the OSHA / HSE / ANSI duty-rating reference. Choose the plan that suits you: - Weekly subscription - Yearly subscription - Lifetime one-time purchase Subscriptions renew automatically unless cancelled at least 24 hours before the period ends; manage or cancel anytime in your App Store account settings. Check your next ladder before you climb it — download LadderAngle and set it at the safe angle. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions or feedback: tphuc.work@gmail.com