ScrollCAT vs DLD

Studying for the MCAT shouldn't lose to your phone. ScrollCAT turns MCAT prep into a swipe-through feed, so your next flashcard is exactly as easy to reach as your next social post. Open the app, and you're already studying. 6,298 flashcards across every MCAT section, built on real spaced repetition: • Swipe to Learn: a TikTok-style vertical feed keeps you in flow. Flip a card, rate it Easy or Hard, keep moving. • Spaced Repetition: hard cards come back sooner, cards you know well space out to 90-day intervals. Study less, remember more. • Combo Multipliers: answer correctly in a row to build combos up to 5x. Streaks and combos make studying competitive with yourself. • Stats & Mastery: a radar chart, accuracy tracking, an activity heatmap, and a focus list ranking your weakest topics. • Topic Map: a visual map of every MCAT topic, color-coded by urgency, so you always know where to focus next. • Daily Goals + Countdown: set your exam date and get a smart auto-goal that adjusts daily based on your performance and days remaining. • Friends & Challenges: add friends, climb the weekly leaderboard, and send head-to-head challenges. Content coverage: • Bio/Biochem: cell biology, genetics, metabolism, molecular biology, enzyme kinetics, and more (2,223 cards) • Chem/Physics: organic chemistry, biochemistry, general chemistry, physics, and lab techniques (1,614 cards) • Psych/Soc: psychology, sociology, social behavior, and research methods (2,461 cards) COACHED MODE (optional, auto-renewing subscription) Upgrade to get a personalized, day-by-day study plan built from your exam date and live performance, an AI tutor built into every card so you can ask "why is this wrong?" without leaving your session, the full topic map with every subtopic unlocked, a dedicated hard-cards review zone, and full stats with streak history and your focus list. Coached Mode is billed monthly and can be cancelled anytime in Settings. ScrollCAT's core flashcard feed is free, no subscription required to start studying. MCAT is a registered trademark of the Association of American Medical Colleges (AAMC). ScrollCAT is not affiliated with or endorsed by AAMC. Terms of Use: https://www.scrollcat.app/terms-of-service Privacy Policy: https://www.scrollcat.app/privacy-policy

DLD is a digital logic design and circuits workbench for your phone. Drop gates onto the bench, wire them together, flip a switch, and watch the signal travel through the circuit in real time. Built for students working through a digital logic design course — and for anyone who wants to see Boolean algebra actually do something. BUILD ANYTHING • 28 components: switches, clocks, Vcc and ground, every standard gate, tri-state buffers, multiplexers, flip-flops, displays and probes • Gates take 2 to 8 inputs — one wide NAND instead of three cascaded ones • Tap a component to reach its settings: input count, clock speed, colour • A work bench far bigger than the screen, with pan, zoom and fit-to-circuit SEE IT WORKING • Current animates along every live wire, so you can follow a signal • LEDs, LED bars, 7-segment and hex displays light up as the circuit runs • A school bell that rings for as long as it has current • Logic probes read out 1 or 0 anywhere you wire one UNDERSTAND IT • Boolean equations written out from whatever you have drawn • A full truth table generated from your circuit, ready to copy out • Conflicting drivers on a net are flagged rather than quietly wrong • A tutorial section covering every gate symbol and its truth table KEEP YOUR WORK • Save and reopen as many circuits as you like • Undo and redo everything • Recolour wires, lamps and blocks however you want to read them COMPONENTS Switch · Clock · Vcc · GND · AND · OR · NOT · NAND · NOR · XOR · XNOR · Buffer · Tri-state buffer · Tri-state NOT · MUX · DEMUX · D flip-flop · T flip-flop · JK flip-flop · Virtual links · LED · LED bar · 7-segment · Hex display · Bell · Probe · Label PRIVATE BY DEFAULT No account. No sign-in. No analytics. No ads. Nothing leaves your device — your circuits are saved on the phone and nowhere else. The app works with no network connection at all.