30
A lesson for every SAT skill
Ten minutes each, in five steps.
Step 3 of 5 · Your turn
Digital SAT prep
Study smarter.
Score higher.
Practice tests, adaptive drills, a lesson for every skill and an AI Tutor, all in the real Bluebook format. Free to start.
Why blueberry
A smarter way to prep.
Built from real tests
Questions come from official College Board practice material, on the same screen you’ll test on.
Aimed at your weak spots
Drills and your study plan pull from the skills that cost you the most points.
Every answer explained
Why the right answer is right, the trap in the wrong one, and a step-by-step for Math.
Free where it counts
Every practice test and the whole question bank are free. Pro just adds more AI help.
What you get
Everything you need, none of the guesswork.
Tap any feature to see it in the app.
01Learn
Understand the skill before you drill it.
Step by step
Watch Math solved on Desmos
Every Math question, one step at a time on the calculator you get on test day.
02Practice
Real questions, in the format you’ll test in.
1240/1600
Full-length SAT and PSAT tests
Drills that adapt to you
Two right and they get harder. Miss one and they ease off.
Every question, one search away
Search words or a question ID
AlgebraHardPSAT
03Get help
When you’re stuck, an answer that teaches.
A tutor that knows the SAT
How do I start this one?
Put a in for x and set it equal to 10. What do you get?
“An incident” only means an event. The blank needs something unusual.
An explanation on every question
04Plan & track
Know what to do next, and see it working.
A plan to your goal score
MTWTFSS
Results & analytics
Know exactly what cost you points
Mistakes come back until they stick
Get one right twice and it’s cleared.
05Supplements
Extras that sit alongside the rest.
liaison
A Desmos course and SAT vocabulary
Extra practice on the side, whenever you want it.
Bring any practice test PDF
Read the guideNo surprises on test day
Practice on the same screen you’ll test on.
The same split screen, timer and tools as the real digital SAT, so nothing on test day is new.
Try a real question
The recently observed gamma ray burst GRB 230307A lasted for 200 seconds, ______ for a burst generated by the merger of neutron stars. Bursts caused by neutron mergers typically last fewer than 2 seconds.
Which choice completes the text with the most logical and precise word or phrase?
Why it’s correct
The second sentence sets the expectation: bursts from neutron-star mergers usually last less than 2 seconds. GRB 230307A lasted 200 seconds, about a hundred times longer than that, so it was strange for its kind. “An oddity” means something unusual or out of the ordinary, which is exactly the point the text makes.
Common mistake
“An incident” is tempting because it sounds scientific, but it only means “an event.” It doesn’t say anything about the burst being unexpected, and the blank needs a word that compares this burst to typical ones.
Get 4,500+ more questions freeIn a group, 40% of the items are red. Of all the red items in the group, 30% also have stripes. What percentage of the items in the group are red with stripes?
Why it’s correct
The 30% is a percentage of the red items, not of the whole group, so take 30% of the 40%: 0.30 × 0.40 = 0.12. That means 12% of all the items are red with stripes. A quick check with 100 items: 40 are red, and 30% of those 40 is 12.
Common mistake
70% comes from adding 40% and 30%. Adding would only make sense if both percentages were out of the same whole; here the 30% applies to the red items only, so you multiply instead.
Get 4,500+ more questions freePick an answer (cross out ones you’ve ruled out with the letters on the right), then check it. Stuck? Show the answer to see why it’s right, the way every question in the app explains itself.
Every question explains itself.
Try one from a real practice form. Cross out what you’ve ruled out, check your answer, and see why it’s right and the trap that catches most people.
Try it
What would you score?
Slide to how many questions you’d get right in each section. The score comes from the official scoring table for SAT Practice Test 4.
Use the full score calculator–out of 1600
- Reading and Writing
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- Math
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- Percentile
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By the numbers
Everything the test can ask, in one place.
Every skill on the digital SAT has lessons, real questions and a drill behind it, so there’s always a next step.
11full-length practice tests, SAT and PSAT
4,500+real practice questions
30skills, each with its own lesson
20free AI requests every day
Pricing
Simple pricing
Free
$0
- Full-length practice tests & drills
- Every lesson, plus the Desmos course
- Study plan, diagnostic & notes
- 20 AI requests / day (Tutor, explanations, Step by step)
Pro
Recommended$5/mo
- Everything in Free
- 200 AI requests a day (explanations, Tutor, Step by step)
- Up to 30 a day on the advanced model, plus study plan coaching
- Advanced tutor mode
- Photo checks: snap your work
Is blueberry really free?
Yes. The free plan includes every full-length practice test, the full question bank, every lesson and the Desmos course, the study plan, and all the skill drills. Nothing about the actual studying is paywalled. Free accounts get 20 AI requests a day across the Tutor, explanations and Step by step; Pro ($5/month) removes the daily limit.
Do I need an account?
No. Guest mode lets you use most of blueberry with no signup, and your history stays in your own browser. Guests can read any explanation that’s already been written for a question; a free account gets you the lessons, new and personalized explanations, the AI Tutor, your notes, and your progress synced across devices.
Can I add my own practice tests?
Yes. Upload any SAT practice test PDF to an AI chat with our prompt, paste the reply into blueberry, and take it as a timed, Bluebook-style test. Here’s how.
How is blueberry different from Bluebook?
Bluebook is the College Board’s official app: it’s where you take the real SAT and its official practice tests. blueberry is for everything in between: more full-length tests in the same format, a lesson for every skill, drills that adapt to you, an explanation for every question, an AI Tutor, and stats that show what’s costing you points. We’d recommend taking the official Bluebook practice tests too.
Is blueberry affiliated with the College Board?
No. blueberry is an independent study tool. It isn’t affiliated with, endorsed by, or sponsored by the College Board, which owns the SAT trademark and the Bluebook app.
What devices does it work on?
blueberry runs in your web browser, so there’s nothing to install. It works on phones for quick practice, but for full-length tests use a laptop or tablet, the same kind of device you’ll take the real SAT on.
How do I cancel Pro?
Any time, from Account → Billing → Manage subscription in the app. There’s no contract, and the free plan is still there if you cancel.
What do you do with my data?
We don’t sell personal data, run ads, or use ad tracking. Our Privacy Policy spells out exactly what we collect and why.
Ready to get started?
Take your first full practice test today. It’s free.