Write it. Snap it.
Get it graded.
Do a real AP free-response on paper, take a photo, and get it scored point by point against the rubric in seconds. Try one free below — no account needed.
- (A) Find f′(x).
- (B) Find f′(2).
- (C) Write an equation for the line tangent to the graph of f at x = 2.
- 1. Work it out on paper
- 2. Snap a photo and upload it
- 3. Get scored point by point
Free, no account. We don’t save your photo.
How a student goes from gaps to exam-ready
Free-response is where the practice pays off — and where AbiSabi does the part that used to need a teacher.
Find the gaps
A short adaptive diagnostic builds a knowledge gap map across every unit — so you start with what actually matters.
Learn & practice
Guided lessons, an AI tutor, and Bluebook-style practice close each gap, with spaced review to make it stick.
Write it, get it graded
Answer free-response the way your real exam is taken — on paper or typed — and get rubric-level feedback in seconds. Then revise and resubmit.
Prove it on a full mock
Complete Section I and Section II as one timed mock, with your free-response graded automatically.
Graded the way your real exam is taken
Original lessons and practice across the AP catalog — with free-response set up the same way the real exam runs.
See your whole classroom — before the exam, not after.
AbiSabi turns thousands of practice answers into the picture teachers actually need: who needs help, on what, and where to spend the next lesson.
- One-click assignments to classes or individuals
- Live class health: who’s behind, who hasn’t logged in
- Most-missed questions and per-standard mastery
- Gradebook export
Free to start. Pay only for the subjects you take.
Unit 1 of every subject is free forever. Unlock a subject fully for one payment that covers a full 12 months — no subscription.
Unit 1 of every subject, always free.
- Unit 1 practice & FRQs
- AI tutor & guided lessons
- No credit card required
Full subject unlock, with a taste of the AI tools.
- Everything in Free, all units
- AI tutor & FRQ grading included
- One-time — nothing auto-renews
The same unlock, with AI you can lean on all term.
- Everything in Pro
- 15× the tutor messages
- 10× the FRQ gradings
Questions, answered
How does the free-response grading work?+
Depending on how your real exam is taken, you either write by hand and photograph your work, or type in the app. Either way, AbiSabi scores each part against the rubric, quotes the evidence from your answer, and tells you what to fix — feedback that used to take a teacher hours. It’s an AI grader, so treat scores as practice feedback, not an official score.
Is AbiSabi aligned to the new digital AP exam?+
Yes. Practice mirrors the College Board Bluebook layout, including the Part A (no calculator) and Part B (calculator) structure and an on-screen graphing calculator, so students rehearse the real interface.
Which subjects are covered?+
24 AP subjects and 25,000+ practice questions today: Calculus AB, Calculus BC, Statistics, Precalculus, Computer Science A, Computer Science Principles, Biology, Chemistry, Environmental Science, Physics 1, Physics 2, Physics C: Mechanics, Physics C: E&M, English Language, English Literature, US History, World History, European History, US Government, Comparative Government, Macroeconomics, Microeconomics, Psychology, and Human Geography — each with original lessons and practice, plus free-response sets wherever the exam has a free-response section.
Can the AI tutor actually teach me a topic from scratch, or does it just answer questions?+
It teaches, not just answers. Ask about a topic you’ve never seen and the tutor walks it from the ground up — explaining the concept, working an example with you, then checking your understanding with a question of its own before moving on, the way a one-on-one tutor would in a first lesson.
How is my data handled?+
We never sell student data or use it for third-party advertising, and data is encrypted. Submissions aren’t used to train third-party foundation models. See our Privacy & Data Protection summary for the details.
Do teachers get real tools?+
Yes — one-click assignments, live class-health dashboards, most-missed-question reports, per-standard mastery, and gradebook export.
Know your free-response score before exam day.
Create a free account and take your first step today — no credit card, no setup headache.