Drone Flight Time & Range

The drone pilot's pre-flight endurance planner — flight time, safe range and a clear GO / NO-GO verdict before you take off. Enter your pack data the way your spec sheet lists it (Wh + W, Ah + V + W, or Ah + A), set the usable battery share (the conservative 80% convention by default) and pick your reserve. Read the safe flight time in minutes, the safe range in km — one-way or out & back with the turn-around point — and a reserve verdict against the ≥25% operator standard. A pre-flight summary lists every assumption, ready to double-check at the field. PRO • Payload planning: add the payload's extra power draw and see the real cost in minutes and km • Wind planning: head- or tailwind on the outbound leg, return leg flipped automatically, legs computed separately • Multiple drone profiles — keep every aircraft one tap away • Save flight plans to history • Share clean PDF flight-plan reports Free tier stays honest: one drone profile, full endurance and range math, plain-text share. Built for the field: big steppers, huge results, sunlight-readable Outdoor Bright mode. Everything stays on your phone — fully offline, no account, no tracking. Results are planning estimates — always verify against manufacturer data and your local aviation rules. PRO UNLOCKS: wind & payload planning, multiple drone profiles, calculation history and PDF flight reports. Available as an auto-renewable subscription (monthly or yearly) or a one-time Lifetime purchase. ——— Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://hdappstudio.com/droneflight/privacy/