About
This app offers an interactive learning experience by explaining concepts aloud and allowing users to manipulate 3D models and live charts. It consolidates notes, PDFs, and web research onto a single canvas and supports collaborative study sessions.
What's New in Rex
1.5
September 25, 2026
Podcast is now the way Rex teaches — Rex and a co-host talk through your notes, with visuals on screen. Start it right from Home. Charts now open to true full screen for a better view. Read-aloud no longer cuts off long lectures partway through. Lectures now always include supporting pictures. Notes fixed so ink stays visible in dark mode. Smoother board browsing, cleaner board creation, and several bug fixes.
MoreSubscriptions & In-App Purchases
Pro
Full access with higher daily AI limits
FAQ
What is Rex's core learning method?
Rex teaches by explaining questions aloud and presenting visual aids like 3D scenes and live charts. Users can interact with these elements to deepen their understanding, moving beyond traditional text-heavy study materials.
Can I use Rex for free?
Yes, the whiteboard and core study tools are available for free. Premium features such as advanced AI, higher daily limits, persistent class memory, premium voice, study video generation, and live board sharing require a Pro subscription.
What subjects does Rex cover?
Rex offers interactive content across biology, physics, chemistry, earth science, and computing. It provides over 70 interactive charts and 20 explorable 3D scenes to visualize complex concepts.
How does Rex handle lectures and notes?
Rex can transcribe lectures as you record them, automatically generating notes. Additionally, any note, PDF, or scanned page can be read aloud with sentences highlighted as they are spoken.
Is Rex suitable for collaborative study?
Yes, Rex allows you to share a study board and work on it live with classmates. This feature enables real-time collaboration on notes, drawings, and research.
What are the subscription costs for Rex?
The Pro subscription is $11.99 per month or $99.99 per year. The annual plan offers a significant discount compared to the monthly rate.
Does Rex have ads?
No, Rex does not contain advertisements. The app is free to start, with optional in-app purchases for premium features.
What devices can I use Rex on?
Rex is available on Mac, iPhone, and iPad, making it accessible across multiple Apple devices for a seamless study experience.
