Chessly vs Robin

Chessly is your go-to chess training app built by IM Levy “GothamChess” Rozman. Designed for beginners and improving players alike, Chessly makes mastering chess simple, fun, and effective. With structured courses, interactive lessons, drills, and videos, you’ll build real skills step by step. Study openings, tactics, strategy, and endgames with clear video explanations paired with practice tools that reinforce what you learn. Track your progress, earn XP, and stay motivated as you climb the ranks. Whether you’re new to the game or aiming to boost your rating, Chessly brings world-class chess education right to your fingertips. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://chessly.com/privacy-policy

Robin is a complete design app for axisymmetric solenoid magnets. It allows you to go from a first geometry sketch to field maps, inductance, and harmonic analysis, and it runs entirely on your iPhone or iPad. Build a magnet from stacked coil sections, each with its own dimensions, turns, and current. A live geometry preview keeps the cross-section in front of you while you iterate, and every project is saved on your device. No account, no cloud — it runs completely offline. DESIGN • Create magnets from any number of coaxial coil sections • Live cross-section preview with real dimensions and true proportions • Work in mm, cm, m, inches, mils, or feet • Per-project length units, light and dark theme FIELD • Full B(r,z) field maps: Br, Bz, and |B| on a configurable grid • Fast native solver for interactive recalculation • Pan and zoom the field slice; adjustable display and resolution ANALYSIS • Self- and mutual-inductance matrix for all coil sections • Coupling matrix and total stored magnetic energy • Zonal harmonic coefficients for field-quality work PROJECTS • Unlimited projects, stored locally with instant switching • CSV import and export for coil geometries • A built-in sample project to start from Robin is built for physicists, magnet engineers, and students who want real magnetostatics in their pocket. The solver is a native C++ compute core validated against closed-form solutions. A full field map takes moments, not minutes. Everything stays on your device. Robin collects no data and never connects to the internet.