Codeo

Codeo teaches you to code from your phone. It is an AI code learning app built around short, game-style lessons, so a spare ten minutes on a commute is enough to finish one.

Learning streaks and leaderboards give you a reason to come back each day, which is where most self-taught coders drop off.

Inside the app, AI assistance helps you work through concepts when a lesson does not click, and hands-on projects let you apply what you learned instead of only answering quiz questions.

That practical side matters if you want skills you can actually use.

Codeo has a free basic plan, so you can try the lessons before paying anything.

Some features are limited on the free tier, and the Pro and Max plans need a subscription.

Refunds are not offered, so test the free plan properly first.

As a mobile coding course, Codeo suits beginners who prefer small daily sessions over long video tutorials or desktop setups.

It is less obviously aimed at experienced developers looking for a code assistant.