Ladder Angle Calculator vs Slope Level RX

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

Slope Level turns your iPhone into a clear and practical slope meter for everyday measuring tasks. Use it to check surfaces, shelves, frames, tripods, vehicle parking angles, camping ground, and other non-certified measurement needs. The main screen opens directly to live readings, so you can measure without menus or setup. Key features: • Real-time slope and tilt measurement • Plane mode for flat surfaces • Edge mode for one-axis angle checks • Zero calibration for relative measurement • Hold current reading • Save local measurement history • Switch between degrees, percent grade, and slope ratio • Light and dark appearance with configurable theme colors • Works offline and does not require an account Slope Level is designed for quick reference and everyday utility. It is not a certified industrial measuring instrument and should not be used for safety-critical or regulated engineering measurements. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/