Frequently asked questions

Whetcode is a browser-based platform for learning to code by doing. Every lesson is short text followed by real code that you type yourself — paste is disabled on purpose — and run on a real interpreter inside your browser. Progress earns XP, streaks, levels, and badges.

Yes — everything on Whetcode is 100% free until November 30, 2026: all courses, practice problems, system design questions, and case studies. After the free period, some or all of the platform is expected to move to a paid subscription; plans and prices will be announced on the site before anything is charged. Nothing converts to a paid plan without you explicitly signing up.

No. Python, SQL, JavaScript, and every other supported language run entirely in your browser via WebAssembly. There is nothing to download, and the code you write never leaves your machine.

Python from absolute zero, SQL, data science and statistics, machine learning, generative AI and LLMs, data structures, testing and QA, web development, game development with Pygame, and C. Beyond courses there are 1,000+ interview-style practice problems, system design questions across five tracks, and end-to-end ML case studies.

You can learn without one — progress is saved in your browser. Creating a free account lets your XP, streaks, and completed lessons sync across devices.

Typing every character yourself is the point: it builds the recall that reading or pasting never will. It is the same reason musicians practice scales instead of listening to them.

Whetcode's learning content is generated with the assistance of AI and reviewed for quality. That lets us cover far more ground than we otherwise could, but errors are possible — if you spot one, report it via the feedback page and we will fix it.

Completing lesson blocks, solving challenges, and finishing practice problems earns XP. XP accumulates into levels — from Spark all the way up — and specific feats (first boss beaten, a 7-day streak, a flawless type-along) unlock badges. A daily streak counts any day you complete at least one thing.

Yes. The whole site — lessons, practice problems, and the playground included — is built to work on phones and tablets as well as desktops.

Use the feedback page for content mistakes and the report option for bugs — both reach us directly. You do not need an account to send either.