Homework help
Understand a math problem
Upload a photo, type the problem, or explain what you tried by voice. The AI tutor turns your explanation into text, checks the reasoning you used, and can read its feedback aloud.
Check my mathMath help · SAT prep · Real teacher support
Math help that teaches you how to solve it.
Send any math problem by photo, typing, or voice. CountOnX helps you find the step to check—not just the answer. You can also prepare for SAT Math or message a real teacher.
Understand the step · Practice with purpose · Ask for help
Three ways CountOnX helps
Start with the help you need today.
SAT Math prep
Prepare for SAT Math
Take a 16-question diagnostic across all four SAT Math domains, see the skill behind each missed question, and practice the right area next.
Explore SAT PrepAsk a real teacher
Connect with a real teacher
Send a private question or photo of your work to a real teacher, then read the reply in your CountOnX message portal.
Ask a real teacher
Learn one step at a time.
What makes CountOnX different
Learn from your attempt—not just a solution.
Most answer tools stop at the result. CountOnX starts with the work you tried, explains the step to check, and helps you make the next move yourself.
Create a free accountSAT Math practice
SAT prep that tells you what to work on next.
Start with a 16-question diagnostic across all four SAT Math domains. CountOnX connects missed questions to the SAT skill and subskill underneath them, then recommends one useful next step.
Start with CountOnX practice to build your SAT Math skill plan, get feedback, and track what you have truly learned. CountOnX does not reproduce or host College Board's copyrighted questions.
CountOnX is independent and is not affiliated with or endorsed by College Board.
Inside the SAT Math plan
- 4
- SAT domains
- 17
- skills
- 43
- subskills
- A 16-question diagnostic across all four SAT Math domains
- Original practice tied to selected skills
- Progress based on repeated evidence—not a made-up score prediction
Current library: 253 published original questions across 43 of 43 mapped subskills. 25 additional original questions are in educator review before release. CountOnX is not an official SAT exam.