Close-up of a smartphone screen displaying app icons, including Messages, Mail, Safari, Photos, Maps, Calendar, Clock, Camera, Settings, App Store, Music, FaceTime, Notes, Reminders, Health, Podcasts, Weather, Files, Wallet, and a folder labeled AP CHEMDUNN.

ABOUT

AP®︎ CHEMDUNN combines quality AP®︎ Chemistry content with the science of how we actually learn. Grounded in neuroscience research, the app is designed to help students retain more, stress less, and perform their best on assessments and the AP exam. It's not just what you study — it's how you study it.

*AP®︎ and Advanced Placement Program are registered trademarks of the College Entrance Examination Board (“College Board”), which was not involved in the production of and does not endorse this application. 

Our Process

Smarter Study Habits

Scheduled mode prompts students to practice at times they choose, building the spaced repetition and soft accountability that neuroscience identifies as key to long-term retention. Questions are AP teacher written — NOT generated by AI.

Smartphone screen displaying a scientific question and a heat curve graph related to the heating of pure ethanol, with temperature on the vertical axis and heat added on the horizontal axis.

Instant Help Flag

Every question includes a "Flag Question" feature, allowing you to mark difficult problems and attach a note in the moment. These are sent to your tutor creating a custom study list of your specific sticking points for review later.

Screenshot of a mobile app showing a quiz or learning module about atomic and molecular properties, with colored progress bars indicating correct and incorrect answers.
A smartphone screen displaying a scientific question about atomic mass, with a pop-up message asking 'I am so confused! Why would the mass be less?'. The background contains text explaining the mass spectrum of element X, alongside a table with masses of calcium sulfate after heating. The question below asks about the average atomic mass of element X.

Know Your Gaps

A detailed score report breaks down performance by unit and individual topic, giving students — and their tutors — a clear, real-time picture of exactly where to focus.

  • "I went from barely passing my unit tests to getting a 5 on the AP exam. The score report showed me exactly what I didn't know, and the scheduled reminders actually kept me consistent for once."

    —AP Chemistry Student

  • "My daughter has always struggled with staying on top of studying, but the app gave her a structure she could actually stick to. Watching her confidence grow throughout the year made me so happy."

    —Parent

  • "As a tutor, I used to spend the first 10 minutes of every session just figuring out where a student was struggling. Now I walk in already knowing — and we spend that time actually solving the problem."

    —Justin, Tutor

  • "I recommend AP CHEMDUNN to every parent I work with. The tutor connection feature means I'm not just guessing at what a student needs — I have the data to back it up and the ability to step in before a student falls behind."

    —Veteran AP Chemistry Teacher (27 years experience)

Recent Releases

version 2026.0.1

  • Bug fix to ensure users receive the correct number of notification to their phone for expiring questions and when in scheduled mode.

  • Currently the app is in beta testing available only to a select group of users. If you are interested in being part of the beta group register for the waitlist at the top of the page.

  • A web-based app is essentially a configured website designed to look and feel exactly like a traditional app you’d download from an app store. Instead of taking up storage space on your phone, it runs through your mobile web browser, ensuring you always have the latest version automatically without ever needing to run manual updates. It gives you the speed and convenience of an app with the lightweight flexibility of the web.

  • Yes! A free version is available. We also offer a Pro version for $30/ month, which provides unlimited access to our extensive question bank AND connected to a tutor who provides personalized help with flagged questions and more.