Learn JavaScript vs SQLx

Master modern JavaScript programming from syntax foundations to advanced ES6+, asynchronous async/await, and DOM manipulation with Learn JavaScript Coding Offline! The complete hands-on JavaScript academy designed to teach you full web scripting without an internet connection. Whether you are learning to code from scratch, preparing for web development interviews, or building dynamic client-side applications, this app combines structured roadmap lessons, interactive quizzes, and a built-in on-device JavaScript execution engine. COMPLETE MODERN JAVASCRIPT CURRICULUM: - Core Language Fundamentals: Variables (let, const), primitive types, operators, conditionals (if/else, switch), loops (for, while, for...of). - Functions & Lexical Scope: Arrow functions, parameter defaults, closures, first-class functions, recursion, and variable hoisting. - Modern ES6+ Features: Object and array destructuring, spread/rest operators, template literals, optional chaining, and nullish coalescing. - Arrays & Objects Mastery: Methods including map, filter, reduce, find, some, every, Object.entries, and deep copying techniques. - Asynchronous JavaScript & APIs: Promises, async/await syntax, event loop, microtask queue, try/catch error handling, and Fetch API patterns. - DOM Manipulation & Events: Selecting HTML nodes, dynamic class toggling, listening to click/input events, event bubbling, and dynamic UI rendering. - Interactive On-Device Code Engine: Write, execute, and debug real JavaScript code safely inside the app with instant console output. - 100% Offline Coding: Learn syntax, review cheat sheets, and run scripts anytime on flights or commutes without Wi-Fi. COMMITTED TO PRIVACY: No data tracking, no mandatory subscriptions, and zero internet permissions required. Download Learn JavaScript Coding Offline today and write modern JavaScript like a pro!

SQLX is the most hands-on way to learn SQL on iPhone. Whether you're starting from scratch or preparing for your next job interview, SQLX takes you from the basics all the way to advanced techniques — step by step. LEARN BY DOING Every lesson ends with a real SQL challenge. Write actual queries, hit Run, and see instant results. No passive theory — just you and the database. 12 MODULES, FULLY STRUCTURED Each module builds on the last, covering everything you need: · SELECT & Filtering (WHERE, ORDER BY, LIMIT) · INSERT, UPDATE, DELETE · Schema Design (CREATE / DROP TABLE) · JOINs (INNER, LEFT, RIGHT) · GROUP BY & Aggregations · Subqueries & Correlated Queries · Common Table Expressions (CTEs) · CASE WHEN & Conditional Logic · UNION & Set Operations · Window Functions (ROW_NUMBER, RANK, AVG OVER) LIVE SQL LAB Practice freely in a built-in SQL playground. Choose from ready-made sample databases — e-commerce, HR, construction — or build your own schema from scratch and run any query you like. 6 CAREER PATHS Pick a structured path tailored to your goal: · Data Analyst (8 hrs) · BI Analyst (12 hrs) · Backend Developer (14 hrs) · Data Engineer (15 hrs) · Product Analyst (10 hrs) · SQL Interview Prep (16 hrs) EARN AS YOU LEARN Stay motivated with daily streaks, XP points, and 17 unlockable badges. Finish certification exams to earn verifiable certificates at Beginner, Intermediate, and Senior levels. WORKS OFFLINE All content is built into the app — no internet required. Learn on the subway, on a flight, anywhere. PRIVATE BY DESIGN No ads. No tracking. Your progress stays on your device and syncs privately through iCloud. Download SQLX and write your first query today.