1600.io review
Focused SAT Math instruction and explanations, without full-length adaptive tests.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
1600.io is a web-based SAT self-study service for students preparing independently, particularly those concentrating on Math and Desmos skills. Its resources include an interactive SAT Math Orange Book course, video explanations for released SAT questions, and tools for reviewing practice answers and math topics. Students working with a tutor or school class can also choose separate memberships. The service is aimed at focused review and instruction rather than a complete practice-test program.
The Math materials are the clearest reason to consider 1600.io. The Orange Book course combines examples, practice problems, and explanations, while Mastering Desmos for the Digital SAT addresses calculator strategies. Interactive Desmos solution graphs accompany applicable digital SAT Math problems, and the SAT Math Topic Explorer lets students browse topics and related questions. Released SAT answer forms can be autoscored, and a Reading Section Mistake Analysis and Recommendation Tool adds some coverage beyond Math. These features suit students who want structured topic work and explanations; they do not replace full-length testing or adaptive practice, which are not part of the offering.
Membership pricing is available weekly, monthly, or annually: Weekly Premium Membership is $6.99 per week, Monthly Premium Membership is $19.99 per month, and Annual Premium Membership is $99.99 per year. Each plan provides unlimited access to SAT resources. A free preview of selected resources is available, and the trial does not require a card. Since weekly pricing is the lowest entry price, compare the billing periods before choosing. Students who need adaptive digital SAT practice tests should pair these materials with another practice option; 1600.io is a better fit for learners who want focused Math instruction, released-question explanations, and Desmos guidance.
1600.io pros and cons
- Where it wins
- Interactive Orange Book course with examples, practice, and explanations
- Video explanations and Desmos graphs for applicable released SAT questions
- Topic Explorer, autoscoring answer forms, and a SAT strategy course
- Where it doesn't
- No full-length practice tests or adaptive practice
- Core offering centers on SAT Math rather than complete test coverage
- Weekly membership costs $6.99; the lowest price is not monthly
1600.io fact sheet, pricing and score →
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