DataCamp vs DevPrep

Learn all things data and master AI skills with DataCamp. Master in-demand data engineering, data analysis, AI engineering, data science, coding, and technology skills in Python, SQL, R, and more. Learn through interactive courses and real-world projects, and earn industry-recognized certifications. Whether you’re getting started with AI for work and data or learning advanced technologies, DataCamp’s diverse curriculum helps you learn programming languages such as Python and SQL, along with expert-led AI training, so you can stay ahead in the modern technology landscape. Why learn with DataCamp? Join over 19 million learners who trust DataCamp to become proficient in data and develop AI skills. With DataCamp, you don’t just learn; you apply, build, and certify your way into the data and AI career you want. • Hands-on, interactive courses: Follow bite-sized lessons with short videos, code-alongs, and instant practice to reinforce your progress. • Real-world projects: Apply knowledge from Python, SQL, R, and AI to practical tasks. Work with real datasets, build dashboards, write effective prompts, and apply AI to real-world challenges through guided projects with step-by-step instructions. • AI-assisted learning: Explore, learn, and code in Python or SQL with help from AI. • Become a certified professional: Showcase your skills with certifications across Power BI, Tableau, SQL, and more. Whether you’re aiming to become a Data Analyst, Data Scientist, or AI Engineer, DataCamp certification proves you're ready for the job. • Learn without limits: Master data and AI across mobile or desktop. Always in sync, wherever you go. Whether your goal is to learn to code in multiple programming languages like Python, SQL, or specialize in the latest AI technologies, DataCamp offers a robust learning experience anywhere, anytime. Start learning data and AI in just 5 minutes a day. • Discover top courses to kick-start your data and AI expertise: Introduction to Python, Introduction to SQL, Introduction to R, Understanding Data Science, and Understanding Artificial Intelligence. • Learn Python: Begin your journey with Python coding exercises and interactive lessons, from basic Python syntax to advanced data analysis and machine learning. • Learn SQL: Master databases, SQL joins, and relational databases in our learning app. Develop data analyst skills for advanced analysis in PostgreSQL. • Learn AI: Explore the fundamentals of artificial intelligence through hands-on courses in machine learning, generative models, prompt engineering, and more. Build real projects, use tools like ChatGPT more efficiently, and gain practical skills to apply AI in real-world scenarios. • Unlock the power of programming and coding with AI: Courses like "Introduction to SQL with AI" and "Introduction to Python with AI" (coming soon) at DataCamp will guide you on how to code smarter and effectively collaborate with AI by writing prompts, generating queries, and analyzing data to solve real-world problems. • R Programming: Learn statistics and data visualization with RStudio, exploring the tidyverse and real datasets essential for analytics roles. • All opening course chapters are free: Access starter chapters on data engineering, machine learning, data visualization, database fundamentals, and cloud computing. Reinforce your data analysis skills with tools like Excel, Google Sheets, Power BI, Python, and SQL, or build foundational knowledge in cloud computing with platforms such as AWS, Azure, and Google Cloud. Read Our Privacy Policy and Terms of Service. Visit: https://www.datacamp.com/terms-of-use/ to learn about our policies. Questions or Need Help? Reach out at https://support.datacamp.com/. Download DataCamp now to transform your career and stay ahead of the curve!

Prepare for your iOS developer interview with a plan — 5–10 minutes a day. Hundreds of questions across 20+ topics and 1,000+ interactive challenges — the library grows regularly: Swift, SwiftUI, Swift Concurrency (async/await, actors), Combine, memory & ARC, multithreading & GCD, UIKit, Auto Layout, architecture (MVVM, VIPER, Clean), Objective-C, algorithms & data structures, networking, testing and soft skills. WHAT'S INSIDE • Practice: 1,000+ challenges in 9 formats — what does it print, find the bug, assemble the code, pick the fix, fill in the blank, will it crash?, estimate the complexity, select all that apply, is this API real? — with hints, explanations, Easy / Medium / Hard difficulty and a personal feed that targets your weakest topics • AI-assisted development: review AI-generated code, spot made-up and deprecated APIs, prompts and context, theory and ready-made project rule templates — ship code with AI faster and with confidence • iOS and AI dev news: today's highlights in short, full articles right in the app and one-tap translation • Daily challenge and Streak widgets, Siri and Shortcuts, find articles right from iPhone search • On-device AI on iPhones with Apple Intelligence: explain answers in your own words and get hints • Company prep: interview stages at 24 tech companies based on public candidate reports, what candidates were asked, a day-by-day plan up to your interview date — and you can share your own questions • Timed mock interviews, a weekly challenge, tracks and an activity calendar • Mobile system design: 20 cases with step-by-step walkthroughs and self-checks • Behavioral interviews: 46 questions, your own STAR stories and timed drills • Today: what to review, what to learn next, a daily puzzle and your weak spots • A prep roadmap for Junior, Middle and Senior — stages with must-know checklists • Tasks from real interviews and “what does this code print” puzzles with full solutions • Spaced-repetition trainer: missed cards come back in the same session • Apple-docs-style answers with Swift 6 code and syntax highlighting • A level filter across the whole library — study exactly what you need • Progress by topic, a daily streak and goal • Daily reminders and progress sync via iCloud • Light and dark themes, Russian and English — switch on the fly • Works fully offline — all content is saved on your device • Optimized for iPhone Duo and iPad We continuously update and expand the library of questions and tasks — new content arrives without an app update. Basic topics and the daily challenge are free. Full access to all questions, tasks and materials unlocks with a subscription. SUBSCRIPTION Payment is charged to your Apple ID at confirmation of purchase. It auto-renews unless auto-renew is turned off at least 24 hours before the end of the current period. Manage your subscription in your Apple ID settings. Terms of use and the privacy policy are available in the app.