Electric Field Explorer vs CogniCards

E-Field Explorer makes electric fields visible and intuitive. Place positive and negative charges directly on the field, move them freely, and watch field lines, equipotential lines, and field strength update in real time. Use preset scenes such as a single charge, dipole, quadrupole, capacitor, or hollow sphere for a quick start, then adapt each setup to your own experiment. You can adjust charge strength for selected charges and optionally show labels for clearer orientation. The integrated particle emitter makes field behavior especially easy to grasp. Choose positive or negative test charges, automatic emission or single pulses, and damped or undamped motion. That makes the app ideal for teaching, self-study, and visual demonstrations on iPhone and iPad. Features: - Place positive and negative charges with drag and drop - Toggle field lines, equipotential lines, and heatmap - Adjust the strength of individual charges - Start from preset scenes for common electrostatic setups - Share screenshots directly from the app

Learn anything. Actually remember it. CogniCards turns any subject into flashcards and uses proven spaced repetition to show you each card at the perfect moment — right before you'd forget. Just a few focused minutes a day, and your recall climbs. Whether you're prepping for exams, learning a language, or mastering a professional field, CogniCards adapts to how your memory actually works. WHY IT WORKS • Spaced repetition (FSRS): a modern algorithm schedules every review for you, so you spend time only on what you're about to forget. • Active recall: test yourself instead of re-reading - the fastest path to lasting memory. • A smart daily queue: clear today's cards and you're done. No guesswork. BUILT FOR REAL STUDYING • Rich cards: format with Markdown, and add images, tables, code, and beautiful math (LaTeX). • Decks & folders: organize by subject, course, or exam with folders and sub-decks. • Practice modes: mix up review with quizzes and matching games. • Tough-card review: automatically revisit the cards you keep missing. • Bulk editor: edit hundreds of cards at once in a fast, spreadsheet-style table. BRING YOUR EXISTING DECKS • Import .apkg packages and tab-separated text files from other flashcard apps - decks, cards, and tags come right across. • Export and back up your entire library anytime. STAY MOTIVATED • Earn XP, level up, and keep your streak alive. • Unlock rewards, achievements, and themes as you study. SEE YOUR PROGRESS • Rich statistics: streaks, accuracy, forecasts, heatmaps, and card lifecycle. • Study plans & deadlines: set a target date and CogniCards tells you how many cards a day to master it in time. • Daily reminders keep you consistent. SYNC EVERYWHERE • Optional iCloud sync keeps your cards, decks, and progress up to date across iPhone, iPad, and Mac. PRIVATE BY DESIGN • No ads. No tracking. No account required. • Your data stays on your device and, only if you choose, in your own private iCloud. Beautiful in light and dark mode, fast, and designed to make studying feel rewarding. Download CogniCards and start remembering more today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://github.com/johnusz/CogniCards/blob/main/privacy-policy.md