What's new
Everything below is something you can use. We leave out the work you would never notice, which is most of it.
Clearer worked explanations in maths
Rewrote the explanation shown after a wrong answer on several hundred maths questions. Each one now names the specific mistake that leads to the choice you picked, instead of restating why the right answer is right.
AP Precalculus practice
Added 105 AP Precalculus questions covering all three units the exam assesses: polynomial and rational functions, exponential and logarithmic functions, and trigonometric and polar functions. Around two in five are built on a graph or a data table rather than algebra alone, which is how the real exam asks.
The app updates itself without losing your place
A new version no longer waits for you to close the tab. It installs when you are not mid-question, and if you are partway through a drill it asks rather than reloading underneath you.
Science questions rebuilt around reading the figure
Replaced the science question format. Questions now ask you to read a specific value or trend out of the figure, which cannot be answered by guessing which claim sounds plausible.
Harder full-length practice tests
Added practice test forms built to a higher difficulty band, for students who were already scoring near the top of the standard forms.
Wrong-answer pattern reference
Published a page for each recurring wrong-answer pattern, explaining how to spot it, why it works on people, and how to beat it.
ACT practice
Added ACT English, ACT Math, ACT Reading and ACT Science practice, plus full-length ACT practice tests built from authentic passage sets rather than loose questions.
Full-length digital SAT practice tests
Added full-length adaptive practice tests that change difficulty between modules the way the real digital SAT does.
AP Calculus practice
Added AP Calculus questions and a separate rules trainer for fast repetition on differentiating, antidifferentiating and evaluating limits.
AP essay practice
Added AP essay questions that ask which rubric row a piece of writing actually earns, so you can see what a grader is rewarding rather than guessing.
Application essay practice
Added application essay questions on reading what a prompt is really asking, which is where most drafts go wrong before a word is written.
Grammar practice
Added grammar practice in the digital SAT's format, where you pick the choice that completes the sentence rather than correcting an underlined error.
Reading and maths practice
The first two subjects: reading questions built around the wrong-answer traps the exam actually uses, and maths questions built around picking the fastest route to the answer.