CS Revision vs Codewise

CS Revision helps you revise IB Diploma Computer Science in one focused place: learn a topic, practise it, then review what you got wrong until it sticks. LEARN EVERY TOPIC STEP BY STEP • 27 structured topics across Theme A, Theme B and the course components • Clear explanations, key ideas, worked examples and tables • Code examples in Python or Java, with syntax highlighting. Choose your language once. • Standard Level and Higher Level: HL-only material is labelled and can be hidden • Search, filter and bookmark topics PRACTISE WITH ORIGINAL QUESTIONS • Over 1,100 original practice questions written for this app • Single-answer, multiple-answer, code-output and short-answer questions • Instant feedback with an explanation for every question • Quick practice, topic practice and timed Theme A and Theme B practice sets • Report any answer that looks wrong straight from the question REVIEW AT THE RIGHT TIME • A spaced-review queue brings back questions just before you are likely to forget them • Progress charts, topic mastery and your weakest topics at a glance • A Due Review widget for your Home Screen • Optional daily practice reminders at a time you choose ASK THE QUESTION COACH Ask a follow-up about the lesson or question you are studying. The Question Coach uses Apple Intelligence on your device, so your questions are not sent to the developer or saved. It needs an iPhone or iPad that supports Apple Intelligence, with Apple Intelligence turned on. Responses are generated and can contain mistakes, so check them against the lesson. PRIVATE BY DESIGN • No account or sign-in • Your study profile and progress can sync between your iPhone and iPad through your own private iCloud • No advertising, no tracking and no third-party analytics • Export your progress or reset it at any time FREE AND FULL ACCESS Free: a selection of lessons and practice questions with explanations, up to three due review questions at a time, and one Question Coach conversation. Full Access (one-time in-app purchase): every lesson and question, unlimited practice and review, timed practice sets and unlimited Question Coach conversations. It is a single purchase with no subscription, and you can restore it on your other devices. CS Revision was developed independently from, and is not endorsed by, the International Baccalaureate (IB). International Baccalaureate and IB are registered trademarks of the International Baccalaureate Organization. All lessons and questions are original study material. They are not official IB examination questions or markschemes. Use the app alongside your teacher's guidance and the official course materials from your school. Terms of Use: https://grigor-dochev.github.io/ib-cs-revision-help/terms/

Codewise is the fastest way to go from zero to coding confidence — right from your iPhone, iPad, or Mac. Pick a language and start writing real code immediately. No fluff, no lengthy video lectures, no subscription. Just hands-on challenges that teach you the fundamentals through practice. LANGUAGES • Python • Swift • JavaScript • Java • Kotlin • C# • SQL (PostgreSQL) FEATURES • 280+ bite-sized challenges with instant feedback — write code, run it, see the result • Structured learning paths — Intro to Programming, Language Basics, Object-Oriented Programming, Functional Programming, and Design Patterns • Functional programming in C# — lambdas, Func and Action delegates, closures, and LINQ pipelines with Where, Select, OrderBy, and Aggregate • Design patterns in Python — Singleton and dependency injection, from a shared instance to a tiny container (new in 1.4) • Built-in code editor with syntax highlighting and live error hints for every language • Code runs on your device, fully offline — no account, no ads, no data collection • SQL challenges show results exactly like the psql tool, so what you learn transfers to real databases • Progress syncs across iPhone, iPad, and Mac with iCloud ONE PURCHASE, EVERY DEVICE Codewise is a one-time purchase. Buy it once and use it on iPhone, iPad, and Mac — no recurring fees, ever. Whether you're brand new to programming, preparing for an interview, or brushing up on a new language, Codewise meets you where you are and helps you level up one challenge at a time.