Adaptive practice
Every set is picked for your current level on each skill — easy enough to build momentum, hard enough to move your score.
New Free guides for all 30 Digital SAT skills
SAT prep that knowswhat to teach you next.
Solar finds the skills costing you points, builds a short plan for every day, and explains every answer — so each session moves your score.
Free to start · No credit card · Built for the Digital SATYOUR DAILY DOSE OF PROGRESS5 day streak
Let’s make today count.
Small steps. Big possibilities.
Your plan for today20 min
Warm up your math skillsAlgebra · 5 questions
✓Find the words that fitReading & writing · 10 min
Build on what you knowReview your recent questions
You’re building a great habit.
Keep your momentum going!
Keep your momentum going!
Your consistency is paying off.
Every session is a step forward.
YOUR GOAL1500SAT score
300+original SAT-style questions
30skills, each with an in-depth guide
2adaptive modules per section, like test day
$0to start — no credit card
From “where do I start?” to test-day ready.
Four steps. About twenty focused minutes a day.
- 01
Find where your points are
A short diagnostic samples every domain of the SAT and shows where your points are hiding, so you stop guessing what to study.
- 02
Get a plan for today
Every day Solar builds a short session that fits the time you have, weighted toward weak skills that count the most on the test.
- 03
Practice with real understanding
Original SAT-style questions with an explanation for every answer choice — including why the tempting one is wrong.
- 04
Rehearse the real thing
Full-length tests that adapt between modules exactly like the Digital SAT, with a 400–1600 score estimate.
Everything a great tutor does. Any hour you study.
Mistake review
Every question you miss is saved, so you can retry it until you get it right.
Built-in graphing calculator
Practice with the same kind of graphing tool you'll have on test day.
A coach that knows your work
Ask why an answer is right, get a hint without the answer, or decide what to study tonight.
Progress you can trust
Mastery for every skill and a running score estimate, so you know when you're ready.
Every skill on the SAT, explained.
Each skill has a free, in-depth guide: the method, worked examples, and the traps that cost the most points. Percentages show each domain’s approximate share of its section.
Reading and Writing
Math
Problem-Solving and Data Analysis ≈15%
- Ratios, rates, proportional relationships, and units
- Percentages
- One-variable data: distributions and measures of center and spread
- Two-variable data: models and scatterplots
- Probability and conditional probability
- Inference from sample statistics and margin of error
- Evaluating statistical claims: observational studies and experiments
Know why. Not just what.
Most misses aren’t knowledge gaps — they’re traps. Solar explains every choice, names the trap that caught you, and gives you a similar question until you’ve beaten it.
- A rationale for all four answer choices
- Hints that nudge without giving it away
- Similar questions until the skill sticks
Math · Linear equationsMedium
If 3(x − 4) = 2x + 5, what is the value of x?
- A −7
- B 9 Distributed the 3 to x only
- C 17 3x − 12 = 2x + 5, so x = 17
- D 1
Start free. Upgrade when you’re ready.
The diagnostic, your plan, practice, and every guide are free. Paid plans are coming soon.
Preview pricing · No payment is collected
Try for freeQuestions, answered.
Is Solar really free?
Yes. A free account includes the diagnostic, a personal study plan, adaptive practice, and full access to every SAT study guide. No credit card is required.
Is Solar built for the Digital SAT?
Yes. Everything in Solar follows the current Digital SAT: the same two sections, the same eight content domains and 30 skills, the same question formats, and full-length tests that adapt between modules the way the real exam does.
How is Solar different from free practice tests?
Practice tests tell you your score. Solar tells you why: it tracks every skill separately, explains every answer choice, saves your mistakes for review, and builds each day's session around the skills that will raise your score the most.
How long should I study before the SAT?
Most students do well with 6 to 10 weeks of consistent practice, around 20 to 45 minutes a day. Solar sizes each daily plan to the minutes you say you have.
Are Solar's questions from real SATs?
No. Every question is written by Solar to match the format, skills, and difficulty of the Digital SAT. Official College Board practice tests are a great complement once you're close to test day.
Does Solar help with the ACT?
Solar is focused on the Digital SAT today. ACT preparation is planned.
Your best score starts with one question.
Take the free diagnostic and see exactly what to study next.
Start free No credit card required