Aerotech iLaunch vs Rocket Calculator

iLaunch is your ultimate model rocket launch companion! Embark on an exhilarating journey into the realm of model rocketry with iLaunch, our innovative app that brings the power of rocket launching to your fingertips! Say goodbye to traditional launch controllers and long, messy wires. Experience the thrill of launching model rockets directly from your smartphone or tablet. With iLaunch, the sky is no longer the limit! Seamlessly connect to our wireless model rocket launch controller and gain full control over your rocket launching experience. Whether you're a seasoned rocket enthusiast or a curious beginner, iLaunch offers an intuitive interface that makes launching rockets a breeze. ## Wireless Connectivity ## Connect effortlessly to our wireless model rocket launch controller, eliminating the hassle of tangled wires and cumbersome setups. ## Intuitive Controls ## Take charge of your launches with simple and intuitive controls right on your device. Arm the launch, set the countdown, and ignite the engines with our simple "press-n-hold-to-launch" controls. ## Safety First ## iLaunch prioritizes safety with built-in safety features and launch protocols, ensuring a secure and worry-free experience every time.   Whether you're launching in your backyard, at a club event, or in a wide-open field, iLaunch is your go-to companion for rocket launching fun. Join the rocketry revolution and download iLaunch today!

ApogeeField is an offline flight calculator for low and mid-power model rocketry. Enter your rocket (dry mass, body diameter, drag coefficient, launch-guide length) and pick a motor, and it predicts your apogee, the best ejection delay, max velocity, and rail-exit velocity right at the pad — with no signal, no account, and no tracking. WHAT IT DOES - Apogee, max velocity and full altitude / velocity / acceleration flight curves — free. - Recommended ejection delay: ideal coast time mapped to the nearest delay you can actually buy, with the offset in seconds. - Rail-exit velocity with a configurable safety threshold, so you can judge whether the rocket will leave the rail under control. - Compare motors side by side and export your flight card and saved rockets. - Built-in motor database (thrust curves and certified statistics) plus import of your own .eng / .rse files. - Switch freely between metric and imperial units. HOW THE MODEL WORKS (and its limits) ApogeeField runs a deterministic 1-DOF (vertical, point-mass, with launch-angle cosine) flight integration: thrust-curve integration, variable-mass burn (propellant mass is subtracted as impulse is consumed), quadratic drag, and an ISA standard-atmosphere density model, coasting to apogee at the velocity zero-crossing. Every assumption is shown on the results screen so you can line your inputs up against OpenRocket or your own altimeter data. It is an engineering estimate for hobby use — a starting point, not a guarantee. The model does not account for wind, airframe stability, roll, or weathercocking, so real flights will differ. Always verify with an altimeter. This is not a safety, airworthiness, or legal document, and it does not replace the NAR / Tripoli safety code or local airspace rules — follow them. PRIVACY & PRICING 100% offline. No account, no network requests, no analytics, no ads. Your rockets and imported motor files stay on your device. One-time unlock — no subscription. Motor data are numerical facts drawn from publicly submitted thrust-curve files and NAR / Tripoli / CAR certification statistics, stored in our own format with the source and database version shown in the app.