CS Wizard vs ∫dx

Everything for OCR A-Level Computer Science (H446) in one app: notes, flashcards, exam questions, timed mock exams, revision games and step-by-step tools. Written by an A-Level Computer Science teacher, and all of it works offline. REVISE • Clear notes for all 24 specification topics, from processors to algorithms • 378 flashcards, with definitions written around what the mark schemes credit • Search every topic, term and question in one place REMEMBER • Daily Deck: a short set of cards each day, chosen by spaced repetition so each term comes back just before you would forget it • Rate your confidence and watch every topic move from Unfamiliar to Mastered • Quick Review goes straight to your weakest terms • Flashcards can be read aloud, and an optional daily reminder keeps your streak going PRACTISE FOR THE EXAM • Nearly 300 past-paper and practice questions, each with its mark scheme • Mark your own answers and see which topics are costing you marks • Mock Exam: a timed paper of 20, 70 or 140 marks built from your weaker topics, then marked question by question with a breakdown by topic SIX GAMES THAT MAKE IT STICK • Binary Blitz: convert between binary, denary and hexadecimal against the clock • Memory Pairs and Match: pair each term with its definition • Speed Round: does this definition match this term? Sixty seconds • Order It: put the steps of a process in the right order • Sort It: drop each item into the group it belongs to 19 TOOLS THAT SHOW THE WORKING Step through the methods the exam asks you to trace, one line at a time: • Processor: the fetch-decode-execute cycle and scheduling • Binary: denary, binary and hexadecimal conversion, two's complement, addition and subtraction, floating point, shifts and masks • Data structures: stacks and queues, binary search trees, hash tables • Algorithms: linear and binary search, bubble, insertion, merge and quick sort, Dijkstra's shortest path • Logic: Karnaugh maps and truth tables • Compression: run length encoding and dictionary coding TRACK YOUR PROGRESS • Confidence for every topic and across both papers • Streaks, activity and your exam question scores • A countdown to Paper 1 and Paper 2 MADE FOR IPHONE AND IPAD • Real iPad layouts: sidebar, two columns, keyboard shortcuts and pointer support • Portrait and landscape • Find any term from Home Screen search, start your Daily Deck with Siri, or press and hold the app icon for shortcuts NO SUBSCRIPTION, NO ADS, NO ACCOUNT Buy it once. There is nothing to sign up for, and your progress stays on your device. The companion app to compsciwizard.com. CS Wizard is an independent revision app. It is not affiliated with or endorsed by OCR.

∫ dx: A-Level Maths Revision Getting good at A-Level Maths takes one thing: deliberate practice. Not more notes. Not another YouTube playlist. Questions, done consistently, until the methods become second nature. dx is built for exactly that. Smart revision that adapts to you dx tracks every question you rate as "needs work" or "partially got it" and brings it back at the right time - spacing reviews so you're drilling your weak spots, not wasting time on what you already know. AI hints that teach, not spoil Stuck on a question? Get a progressive hint that nudges you in the right direction without giving away the answer. Learn to think through problems, not just copy solutions. Full worked solutions Tap to reveal a step-by-step mark-scheme solution for every question. Not generic ChatGPT answers - structured worked examples built for A-Level Maths. What's inside: • Thousands of exam-style questions across Pure, Statistics, and Mechanics • Edexcel and OCR question banks • LaTeX rendering so every equation and diagram is crisp and readable • Daily 10 - a focused session mixing new questions with spaced review • Custom Practice - drill any topic, any category, any time • Progress tracking so you always know where you stand Free to start. Premium to go further. The core app is free. Premium unlocks unlimited AI hints, full worked solutions, and unlimited custom practice sessions. A-Level Maths rewards consistency. Use dx to build the habit, close the gaps, and hit the grade you're aiming for. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/