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The #1 app with 80 tests & 8000 questions from past-year official Digital SAT exams Detailed answers, explanations & tips
From a team of experienced tutors to you...
JanusPrep Team
100s of practice sets from 8000 real SAT questions, organized by topic and difficulty
AI identifies your weakness and designs a personalized practice plan for you
J. Park
South Korea - Yale
"This SAT prep tool is a true gem! It offers a comprehensive selection of resources and engaging practice questions that greatly boosted my comprehension and improved my test-taking strategies."
E. Thompson
United States - Harvard
"I tried other apps, but only JanusPrep gave me official past papers with full explanations. The AI-generated quizzes based on my weaknesses helped me go to 1500+ in 3 months."
Omar A.
Saudi Arabia - UC Berkeley
"I never felt confident with mock exams until I used JanusPrep. Practicing with real past papers helped me understand the SAT’s style. The AI then focused only on areas I kept messing up. It was pretty effective."
A. Okafor
Nigeria - Brown
"Back home, it was hard to find reliable SAT prep materials. JanusPrep gave me access to real past questions — not just random practice. The AI also helped me focus on my weak spots. I applied to top U.S. universities with confidence!"
J. Park
South Korea - Yale
"This SAT prep tool is a true gem! It offers a comprehensive selection of resources and engaging practice questions that greatly boosted my comprehension and improved my test-taking strategies."
E. Thompson
United States - Harvard
"I tried other apps, but only JanusPrep gave me official past papers with full explanations. The AI-generated quizzes based on my weaknesses helped me go to 1500+ in 3 months."
Omar A.
Saudi Arabia - UC Berkeley
"I never felt confident with mock exams until I used JanusPrep. Practicing with real past papers helped me understand the SAT’s style. The AI then focused only on areas I kept messing up. It was pretty effective."
A. Okafor
Nigeria - Brown
"Back home, it was hard to find reliable SAT prep materials. JanusPrep gave me access to real past questions — not just random practice. The AI also helped me focus on my weak spots. I applied to top U.S. universities with confidence!"
J. Park
South Korea - Yale
"This SAT prep tool is a true gem! It offers a comprehensive selection of resources and engaging practice questions that greatly boosted my comprehension and improved my test-taking strategies."
E. Thompson
United States - Harvard
"I tried other apps, but only JanusPrep gave me official past papers with full explanations. The AI-generated quizzes based on my weaknesses helped me go to 1500+ in 3 months."
Omar A.
Saudi Arabia - UC Berkeley
"I never felt confident with mock exams until I used JanusPrep. Practicing with real past papers helped me understand the SAT’s style. The AI then focused only on areas I kept messing up. It was pretty effective."
A. Okafor
Nigeria - Brown
"Back home, it was hard to find reliable SAT prep materials. JanusPrep gave me access to real past questions — not just random practice. The AI also helped me focus on my weak spots. I applied to top U.S. universities with confidence!"
J. Park
South Korea - Yale
"This SAT prep tool is a true gem! It offers a comprehensive selection of resources and engaging practice questions that greatly boosted my comprehension and improved my test-taking strategies."
E. Thompson
United States - Harvard
"I tried other apps, but only JanusPrep gave me official past papers with full explanations. The AI-generated quizzes based on my weaknesses helped me go to 1500+ in 3 months."
Omar A.
Saudi Arabia - UC Berkeley
"I never felt confident with mock exams until I used JanusPrep. Practicing with real past papers helped me understand the SAT’s style. The AI then focused only on areas I kept messing up. It was pretty effective."
A. Okafor
Nigeria - Brown
"Back home, it was hard to find reliable SAT prep materials. JanusPrep gave me access to real past questions — not just random practice. The AI also helped me focus on my weak spots. I applied to top U.S. universities with confidence!"
J. Park
South Korea - Yale
"This SAT prep tool is a true gem! It offers a comprehensive selection of resources and engaging practice questions that greatly boosted my comprehension and improved my test-taking strategies."
E. Thompson
United States - Harvard
"I tried other apps, but only JanusPrep gave me official past papers with full explanations. The AI-generated quizzes based on my weaknesses helped me go to 1500+ in 3 months."
Omar A.
Saudi Arabia - UC Berkeley
"I never felt confident with mock exams until I used JanusPrep. Practicing with real past papers helped me understand the SAT’s style. The AI then focused only on areas I kept messing up. It was pretty effective."
A. Okafor
Nigeria - Brown
"Back home, it was hard to find reliable SAT prep materials. JanusPrep gave me access to real past questions — not just random practice. The AI also helped me focus on my weak spots. I applied to top U.S. universities with confidence!"
J. Park
South Korea - Yale
"This SAT prep tool is a true gem! It offers a comprehensive selection of resources and engaging practice questions that greatly boosted my comprehension and improved my test-taking strategies."
E. Thompson
United States - Harvard
"I tried other apps, but only JanusPrep gave me official past papers with full explanations. The AI-generated quizzes based on my weaknesses helped me go to 1500+ in 3 months."
Omar A.
Saudi Arabia - UC Berkeley
"I never felt confident with mock exams until I used JanusPrep. Practicing with real past papers helped me understand the SAT’s style. The AI then focused only on areas I kept messing up. It was pretty effective."
A. Okafor
Nigeria - Brown
"Back home, it was hard to find reliable SAT prep materials. JanusPrep gave me access to real past questions — not just random practice. The AI also helped me focus on my weak spots. I applied to top U.S. universities with confidence!"
C. Lin
Taiwan - NYU
"The app didn’t just give me questions — it gave me the right questions. JanusPrep used my performance to build a personalized study path, and every test I took came from actual SAT exams. That’s how I hit 1500+."
R. Tan
Singapore - MIT
"This SAT review platform is fantastic! It features a rich assortment of resources and different practice exercises that help me solidify my knowledge and refine my test-taking skills."
O. Lee
Canada - Standford
"What makes JanusPrep stand out is the real past papers. CollegeBoard recycles questions, and I see several similar questions on the my exam day. Plus, the AI knew exactly what I needed to focus on — it felt like a smart tutor that learns with me."
M. Nguyen
Vietnam - Cornell
"I didn’t know how to start studying until I used JanusPrep. It tracked every mistake and built daily quizzes just for me. The best part? Real past exams — not random questions. It made all the difference."
C. Lin
Taiwan - NYU
"The app didn’t just give me questions — it gave me the right questions. JanusPrep used my performance to build a personalized study path, and every test I took came from actual SAT exams. That’s how I hit 1500+."
R. Tan
Singapore - MIT
"This SAT review platform is fantastic! It features a rich assortment of resources and different practice exercises that help me solidify my knowledge and refine my test-taking skills."
O. Lee
Canada - Standford
"What makes JanusPrep stand out is the real past papers. CollegeBoard recycles questions, and I see several similar questions on the my exam day. Plus, the AI knew exactly what I needed to focus on — it felt like a smart tutor that learns with me."
M. Nguyen
Vietnam - Cornell
"I didn’t know how to start studying until I used JanusPrep. It tracked every mistake and built daily quizzes just for me. The best part? Real past exams — not random questions. It made all the difference."
C. Lin
Taiwan - NYU
"The app didn’t just give me questions — it gave me the right questions. JanusPrep used my performance to build a personalized study path, and every test I took came from actual SAT exams. That’s how I hit 1500+."
R. Tan
Singapore - MIT
"This SAT review platform is fantastic! It features a rich assortment of resources and different practice exercises that help me solidify my knowledge and refine my test-taking skills."
O. Lee
Canada - Standford
"What makes JanusPrep stand out is the real past papers. CollegeBoard recycles questions, and I see several similar questions on the my exam day. Plus, the AI knew exactly what I needed to focus on — it felt like a smart tutor that learns with me."
M. Nguyen
Vietnam - Cornell
"I didn’t know how to start studying until I used JanusPrep. It tracked every mistake and built daily quizzes just for me. The best part? Real past exams — not random questions. It made all the difference."
C. Lin
Taiwan - NYU
"The app didn’t just give me questions — it gave me the right questions. JanusPrep used my performance to build a personalized study path, and every test I took came from actual SAT exams. That’s how I hit 1500+."
R. Tan
Singapore - MIT
"This SAT review platform is fantastic! It features a rich assortment of resources and different practice exercises that help me solidify my knowledge and refine my test-taking skills."
O. Lee
Canada - Standford
"What makes JanusPrep stand out is the real past papers. CollegeBoard recycles questions, and I see several similar questions on the my exam day. Plus, the AI knew exactly what I needed to focus on — it felt like a smart tutor that learns with me."
M. Nguyen
Vietnam - Cornell
"I didn’t know how to start studying until I used JanusPrep. It tracked every mistake and built daily quizzes just for me. The best part? Real past exams — not random questions. It made all the difference."
C. Lin
Taiwan - NYU
"The app didn’t just give me questions — it gave me the right questions. JanusPrep used my performance to build a personalized study path, and every test I took came from actual SAT exams. That’s how I hit 1500+."
R. Tan
Singapore - MIT
"This SAT review platform is fantastic! It features a rich assortment of resources and different practice exercises that help me solidify my knowledge and refine my test-taking skills."
O. Lee
Canada - Standford
"What makes JanusPrep stand out is the real past papers. CollegeBoard recycles questions, and I see several similar questions on the my exam day. Plus, the AI knew exactly what I needed to focus on — it felt like a smart tutor that learns with me."
M. Nguyen
Vietnam - Cornell
"I didn’t know how to start studying until I used JanusPrep. It tracked every mistake and built daily quizzes just for me. The best part? Real past exams — not random questions. It made all the difference."
C. Lin
Taiwan - NYU
"The app didn’t just give me questions — it gave me the right questions. JanusPrep used my performance to build a personalized study path, and every test I took came from actual SAT exams. That’s how I hit 1500+."
R. Tan
Singapore - MIT
"This SAT review platform is fantastic! It features a rich assortment of resources and different practice exercises that help me solidify my knowledge and refine my test-taking skills."
O. Lee
Canada - Standford
"What makes JanusPrep stand out is the real past papers. CollegeBoard recycles questions, and I see several similar questions on the my exam day. Plus, the AI knew exactly what I needed to focus on — it felt like a smart tutor that learns with me."
M. Nguyen
Vietnam - Cornell
"I didn’t know how to start studying until I used JanusPrep. It tracked every mistake and built daily quizzes just for me. The best part? Real past exams — not random questions. It made all the difference."
Get bulk discount for your whole class. Implement Learning Management System (LMS).
Monitor your students’ progress. Send updates to parents. And more.
Yes, all our tests are official past exams from the latest Digital SAT examinations. This is unlike other websites that use mock tests or old SAT exams (often called SAT QAS) - which are no longer used by College Board.
College Board recycles a significant part of past papers to create new exams. You will likely encounter a number of past questions on your exam day. Past papers are the closest to the real exam, helping you prepare most effectively.
Yes! We have special bulk discount for teachers buying JanusPrep for the whole class. From the app, teachers can also monitor their students’ performance, identify their weaknesses to work on, and send updates to parents. Contact us to discuss more.
Yes, you can try some tests for free. When you're ready, you can pay to access more tests.
