BybeCode: learn to code

By writing it, from day one

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

New: SQL. Your queries run on SQLite inside your phone, on practice databases, with results shown as tables. Unit 1 is free. Learn to code by writing it. From the first lesson you write code and run it. Python really runs inside your phone, with no internet and no server: this is not a simulator comparing your text against the right answer. SQL queries run there too, on SQLite, against practice databases, and you see the table they return. A CAREER, NOT A COURSE You start as a Student and reach Principal through eight ranks. Getting past some of them takes more than XP: there is a technical interview to pass, like in real life. That is what BybeCode has and a course does not. GETTING IT WRONG COSTS NOTHING No lives, no hearts, no starting over. A wrong answer gives less XP and the question comes back at the end of the lesson, which is when it actually sticks. YOUR STREAK SURVIVES A BAD DAY Uptime counts the days you coded. Every week you earn a hotfix: it covers the day you could not, and your streak goes on. Nobody should lose three months of work to the flu. WHAT IS INSIDE • Python and JavaScript, over twenty units each; SQL, fifteen • Over 3,500 exercises where you write, reorder and hunt the bug • Over 380 challenges, from O(1) to O(2ⁿ): algorithms in Python and JavaScript, queries in SQL • 18 technical interviews, from Junior to Principal • A project at the end of every unit • In SQL, four practice databases (a store, a school, a library and a company) and a panel to look at their tables NUBE, WHO EXPLAINS When you get it wrong, Nube does not say "incorrect": it says which line the bug was on and why. Staring at an error you do not understand is what makes people quit. AN AI TUTOR THAT WILL NOT GIVE YOU THE ANSWER Stuck on a challenge? Ask Nube. It looks at your code and your test results and gives you a hint, each one more specific than the last, but never the solution: the point is that you solve it. You can also ask it anything about Python, JavaScript or SQL in its chat. IT WORKS WITHOUT AN ACCOUNT You can study without signing up. An account is what keeps your progress from living only on this phone, and it is what you need to talk to the tutor. WHAT IS FREE, AND THE PASS Unit 1 of every language, the first challenges and the Junior interview are free, with no expiry date. The rest opens with the 6-month pass: a single payment that does not renew on its own.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

New: SQL, the third language in BybeCode. • A 15-unit course, from your first SELECT to window functions and indexes • Your queries run on SQLite inside your phone, with no internet, on four practice databases: a store, a school, a library and a company • Results show up as tables, and a panel shows you the tables in the database • 94 challenges and 6 technical interviews Unit 1 is free; the rest opens with the pass. If you already have it, SQL is included. Also: • Sign in at bybecode.com/app on a computer by scanning a code with your phone, in Profile → Settings → Sign in on a computer • What you did on another device shows up on this one when you sign in

Version 1.0.2

The developer, Seyler Librado Vazquez Jimenez, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers
    • Usage Data

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Contact Info
    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • User Content

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Seyler Librado Vazquez Jimenez
Size
87.8 MB
Category
Education
Compatibility
Requires iOS 16.4 or later.
  • iPhone
    Requires iOS 16.4 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and Spanish
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 UNIDIOR
  • Developer Website
  • Privacy Policy