Kite Force - Pull Calculator

Calculate the exact pull force your kite generates under real-world conditions. Essential for line selection, safety planning, and understanding your kite's performance limits before you're holding the line. 🪁 KITE FORCE — Kite Pull Force Calculator ⚡ SMART FORCE CALCULATION • Pull force in Newtons, Pounds and Kilograms • Line recommendation: at least 2x the pull, rounded up to a standard line size • Worst-case analysis against your kite's rated wind ceiling • Air density from live temperature and pressure, not a sea-level assumption • Force table across 10, 15, 20, 25 and 30 mph so you know what's coming as wind builds • Adjustable angle of attack for tuning past the shape defaults • A clear verdict for the wind right now: Good to fly, Marginal, Getting gusty or Too windy 🗂️ YOUR KITE LIBRARY • 13 kite types: Delta, Box, Parafoil, Diamond, Sled, Rokkaku, Dual-Line, Quad-Line, Bols, Bouncing Buddy, Banner, Line Laundry and a generic Other • Each with a tuned drag coefficient and the right measurement fields for its shape • Photos, maker, wind rating, cost and last flown date • Care reminders: flag a kite as Needs repair, Needs cleaning or Needs drying, with a note ⭐ WISHLIST (NEW) • Keep the kites you're thinking about, with the shop link and price • Fit check: the wind it flies in, how hard it pulls, the line it needs, and whether it fills a gap in the kites you own • Wishlist kites don't count toward the free kite limit • Bought it? One tap moves it into your kites 📷 SPOTTED ONE (NEW) • Saw a kite you liked? Snap it with your phone's own camera (zoom works) or pick a photo you already took • It starts a wishlist entry with the date it was spotted • Identify with Google Lens sends the photo to Lens so you can find out what it is 🌤️ LIVE WEATHER • Wind hour by hour for the next 24 hours (the number most weather apps bury) • Current conditions via GPS: wind speed, direction, temperature and pressure • Interactive Windy.com wind map and a 5-day forecast • Manual override when needed 🧺 LINE LAUNDRY • Add windsocks, flags and banners to your force calculation • Small / Medium / Large, or pull from a saved kite 📋 SESSION LOGGING Start a session and the app records condition snapshots over time with location, so you can compare what a flight felt like against what the numbers predicted. 📅 KITE EVENTS Upcoming kite festivals and events, sorted by distance from you. 📐 METRIC & FREEDOM UNITS mph ↔ m/s, °F ↔ °C, inHg ↔ hPa, in ↔ cm. Everything updates instantly. 💾 BACKUP & SHARING • Export and import your whole collection, photos included • Share single kites with other flyers 📱 NO ANDROID PHONE? Kite Force also runs in the browser, free: https://kiteforce.web.app On an iPhone, add it to your home screen and it works like an app. Import a backup from this app to bring your kites along. 🔬 THE SCIENCE Force is computed with the standard aerodynamic equation: F = ½ × ρ × V² × Cd × A Air density (ρ) comes from the ideal gas law using live temperature and pressure. Drag coefficients (Cd) are tuned per kite type (Quad-Line 1.6, Parafoil 1.5, Delta 0.95, Box 0.9) and adjusted for angle of attack. ⚠️ SAFETY • Warnings when the wind is too low or too high for your kite • A warning when your line is too light for the pull • Worst-case modeling at the kite's rated max wind 🌐 WORKS OFFLINE All calculations run on your device. Live weather, maps and events need a connection. 🔓 FREE VS UNLIMITED Free includes the full calculator, live weather, forecasts, wind map, session logging, events, the wishlist and up to 10 saved kites. A one-time Unlimited purchase adds: • Unlimited saved kites • Google Drive backup • No backup reminders No subscriptions. No ads. No tracking. Your gear shouldn't expire. 🆘 SUPPORT Email: [email protected] Website: https://prodirt-llc.github.io/kiteforce/ Built by kite flyers, for kite flyers. Made in Virginia, USA.