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Choose Undergrad, High School, Middle School, Grad Student, Professional, Educator, or Other to personalize your onboarding.

4.8 out of 5 from 1,000+ App Store ratings across locations

Test prep you'll actually come back to.

Open Dolphin on your phone, learn from what you miss, and feel yourself getting better every time you study for the SAT or ACT.

70,000+ students have used Dolphin and answered millions of questions.

Dolphin Web

Go deeper when you want the full test prep setup.

The iOS app stays free. Dolphin Web adds realistic practice tests, deeper review, score tracking, and the tools to learn what test day actually asks of you.

Current prices load from Stripe at signup and checkout.

The free iOS app gives every student a way to study consistently, enjoy the process, and move toward the score they want without wasting time.

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 punctuation practice
• SAT transitions practice
• SAT central ideas practice
• Read Dolphin SAT study guides
• Explore SAT score guides by college

SAT prep comparisons

• Dolphin SAT vs Magoosh
• Dolphin SAT vs Khan Academy
• Best SAT prep apps
• Free SAT practice questions

Hear from our students

1. "I find time to study instead of putting it off."
2. "The questions are very similar to what you see on the actual SAT."
3. "I wish I found it sooner."

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.