Curious about how iOS apps are made?📱Check out this #CS50seminar led by CS50’s Teaching Fellow Kamryn Ohly, where she walks you through the basics of iOS development using Xcode and Swift — including how to build your own Buzzfeed-style quiz game! Plus, get a glimpse into using APIs, AR, and even launching your app to the App Store.

YouTube

Q: GitHub has disabled my account. What should I do?
A: Best to visit cs50.ly/github in incognito mode (i.e., private mode, so that you're logged out) and contact GitHub directly!

#FAQ50

Join us for a Q&A with Professor David J. Malan and CS50’s own Yuliia Zhukovets this Friday, May 16, at 11:30 AM EDT on CS50’s YouTube.

Watch Professor David J. Malan and CS50’s own Yuliia Zhukovets answer your questions during these Office Hours recorded at the CS50’s office. 🏫

https://youtu.be/w4dNGeCwgVY

Did you get a free certificate prior and now want to upgrade to a verified one? If so, simply log into your edX account and purchase a verified certificate for that course. After making that purchase, email us your edX purchase receipt to certificates@cs50.harvard.edu with the hashtag #upgrade in the subject line.

Do you know about the CS50 Manual?📘 A simplified version of C's "man pages" for functions frequently used in CS50. Whether you're just getting started or need a quick reference, it’s here to help.

https://manual.cs50.io/

"As a graduating senior, if you asked me about one of my most memorable moments at Harvard University, I would still immediately think of my very first lecture here. It happened to be CS50 – Introduction to Computer Science, held in the iconic Sanders Theatre...", by Inno '25.

https://college.harvard.edu/.../my-favorite-class-harvard

Ever wondered how AI is transforming healthcare? 🩻 In this #CS50seminar, CS50’s alum Andrew Sellegren introduces you to CXR Foundation, an open-source model from Google Health AI for analyzing chest X-rays. Learn how to run your first inferences, explore real-world use cases, and hear about AI’s role in modern medical imaging.