Inferred vs Semicolon

Test your programming knowledge. Understand the concepts behind the code. Inferred is a focused learning and practice app for developers who want to strengthen their technical knowledge through quizzes, explanations, and continuous progress tracking. Instead of simply memorizing answers, Inferred encourages you to think through each question, make a choice, and understand why an answer is correct. PRACTICE WITH FOCUSED QUIZZES Choose a topic, difficulty level, and session length, then challenge yourself with carefully structured programming questions. LEARN FROM EVERY ANSWER Each question includes a clear explanation to help you understand the underlying concept and learn from mistakes. FIND YOUR WEAK AREAS Inferred tracks your performance across topics so you can see where you are strong and what deserves more attention. TRACK YOUR PROGRESS Follow your learning progress over time and continue building stronger developer skills one session at a time. PREPARE FOR TECHNICAL INTERVIEWS Use focused practice sessions to refresh important programming concepts and test your knowledge before developer interviews. Inferred is currently focused on programming concepts used in Swift development, with more technical learning areas planned for the future. Think. Answer. Understand. Don’t memorize. Understand.

Semicolon is a set of programming courses for your phone. Every exercise uses real code in the language you're studying. Question types include multiple choice, fill in the blank, fix the bug, predict the output and write the function. COURSES - ARM64 Assembly: how a CPU runs your code - Python - Rust - Kotlin - SwiftUI - Discrete Math - Design Patterns: the 23 classic patterns - Data Structures & Algorithms Each course has 24 sections and starts from the basics. LESSONS Lessons are short. After each answer you get an explanation of why it was right or wrong. Every lesson has a manual page with the full concept if you want to read it first. If you already kno a timed test to skip it. FREE AND PRO ARM64 Assembly and Python are free. There is no trial period or time limit. Semicolon Pro is a one-time purchase that unlocks the other six courses. There is no subscription, no ads, and no hearts or lives. There is a streak counter, but nothing gets locked if you miss a day. Your progress is stored on your device. There is no account or sign-in.