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Apps that help you study, play and build.
Five free web apps from CodeTeamsHere: AP study apps for CSP, Precalculus and Psychology, a full chess trainer, and a voice scouting app for robotics teams. They open in any browser, install to your phone, and keep your progress on your own device.
The apps
Pick one to open it, or read what's inside first.
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By the numbers
What's actually inside, counted.
Inside each app
What it is, who it's for, and how to start.
How they all work
The same promises, in every app.
Free, for real
No sign-up wall, no ads, nothing to buy. Open the link and start.
Install like an app
On a phone: Share → Add to Home Screen (iPhone) or menu ⋮ → Install app (Android/Chrome).
Works with bad Wi-Fi
After the first visit they keep working with a weak or no connection; a few online extras wait until you're back.
Your progress stays yours
Scores and streaks are saved in your own browser. Clearing your browser data clears them, so use the export buttons to back up.