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Do you have these apps in your phone for Coding and Technical Skills Practice?

useful apps for coding and technical skill practice

Coding and Algorithm Practice Platforms

LeetCode (iOS/Android)

One of the most popular platforms for practicing coding problems, especially for interview prep. It includes problems on algorithms, data structures, databases, and system design. LeetCode has a vibrant community and offers solutions and discussions for almost every problem.


HackerRank (iOS/Android)

Offers a wide range of challenges across multiple domains like algorithms, data structures, artificial intelligence, databases, and more. It is highly recommended for practicing coding interviews and getting hands-on with coding problems.

CodeSignal (iOS/Android)

Similar to HackerRank, CodeSignal offers a variety of coding challenges. It’s especially known for providing coding challenges used by tech companies for hiring.

Exercism (iOS/Android)

Exercism provides coding exercises and tracks for multiple programming languages. It focuses on real-world coding challenges and offers mentorship through its community.

TopCoder (iOS/Android)

An established platform with competitive programming challenges, used by many tech giants for hiring. It’s great for practicing algorithmic thinking and coding under time constraints.

Codewars (iOS/Android)

Codewars offers coding challenges (called katas) that range from beginner to expert level. You can solve problems in a variety of languages like Python, JavaScript, Java, Ruby, etc., and learn through community solutions.

CodinGame (Web-based)

CodinGame allows you to solve coding challenges in the form of fun games. It’s a unique platform where you can code your way through game mechanics, making it a more interactive and fun way to practice algorithms.

Brilliant (iOS/Android)

Brilliant focuses on learning through problem-solving. It offers interactive lessons and quizzes in mathematics, logic, algorithms, and data science, providing a solid foundation for technical problem-solving skills.

EdX (iOS/Android)

Although EdX is primarily a platform for full courses, it offers great coding-related content, including interactive courses on algorithms, system design, and other technical skills. Many courses are taught by top universities and tech companies.

For Data Science/Programming Roles (Python, Machine Learning, etc.):

  • SoloLearn (iOS/Android): Learn programming languages like Python, Java, and SQL with interactive lessons and quizzes.
  • LeetCode (iOS/Android): Great for practicing coding problems, algorithmic challenges, and preparing for technical interviews in data science and software engineering.
  • HackerRank (iOS/Android): Offers coding challenges and competitions. You can practice data structures, algorithms, and also specific tracks for machine learning and SQL.
  • Exercism (iOS/Android): Practice coding exercises across multiple programming languages. Includes mentorship from other users for feedback.
  • DataCamp (iOS/Android): Provides hands-on coding exercises for data science and machine learning using Python, R, SQL, and more. Great for brushing up on data science-specific skills.
  • Mimo (iOS/Android): Offers small coding exercises in languages like Python, JavaScript, and SQL, perfect for quick practice.
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