SAT & ACT prep with Dolphin

Dolphin is an adaptive study app for high school students preparing for the SAT and ACT. The iPhone and Android apps are free for daily practice. Dolphin Web is a paid subscription that adds full-length practice tests, score tracking, and deeper review.

By Dolphin. Updated October 19, 2026.

Is Dolphin a good way to study for the SAT or ACT?

It depends on how you study best. Dolphin fits students who want short daily practice on their phone, help from Pip, an AI study assistant, when they get stuck, and a video explanation for every question, at a lower cost than a course. If you want live classes or a human tutor, a course or tutoring package from a company like The Princeton Review or Kaplan is a better fit. Either way, use College Board's free Bluebook practice tests as your official checkpoints.

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Dolphin key facts, as of October 2026

• Tests covered: SAT, ACT (English, Math, Reading, and Science), and PSAT.
• Question library: 10,000+ SAT and ACT questions, each with a video explanation.
• Users: 150,000+ (company-reported, October 2026; not an active-user count).
• App Store rating: 4.8 out of 5 from 1,200+ ratings (September 2026).
• Pricing as of October 2026: the iPhone and Android apps are free. Dolphin Web costs $100 billed monthly, $150 billed every 3 months, or $300 billed yearly. Checkout shows your exact total before you pay. See pricing.
• Score Improvement Guarantee: on eligible Dolphin Web plans, complete your study plan and improve your official SAT or ACT score, or get up to your first three months of Premium fees back. Read the full terms.
• Company: built by PaloAI Inc. in San Francisco, founded in 2025 by Daniel Odicho and Neel Shettigar. About Dolphin.

SAT prep resources

• Practice SAT Math skills
• Practice SAT Reading and Writing skills
• PSAT practice questions and study plan
• SAT linear equations practice
• SAT probability practice
• SAT data analysis practice
• SAT transitions practice
• SAT central ideas practice
• Read Dolphin SAT study guides
• Explore SAT score guides by college

SAT and ACT study guides

• Dolphin SAT prep
• Dolphin ACT prep
• ACT practice questions by skill
• Study guides and comparisons
• Dolphin SAT vs Magoosh
• Dolphin SAT vs Khan Academy
• Best SAT prep apps
• Free SAT practice questions

What do students say about Dolphin?

• I used to check the right answer and move on. Dolphin's explanations helped me understand where I went wrong. After a few months of actually reviewing my mistakes, I went from 1100 to 1320.

  Maya, Junior: SAT 1100 to 1320

• Between soccer and homework, I kept putting SAT prep off. Having practice on my phone made it easier to fit in a few questions. I went from 1230 to 1400 on my next test.

  Ethan, Senior: SAT 1230 to 1400

• Math was definitely my weakest section. Being able to work through the explanations at my own pace helped things finally click. It took a whole semester, but getting a 1250 after starting at 980 felt amazing.

  Sofia, Junior: SAT 980 to 1250

Individual student-reported results. Results vary.

Why I built Dolphin

I built Dolphin because I saw what test prep was doing to my younger sisters. They were using random tools, trying to care, and still ending up frustrated. I wanted to build something students would actually open, actually use, and actually learn from.

Daniel Odicho, founder and CEO

Frequently asked questions