Math that actually clicks
An AI tutor that talks through problems and draws each step on a live whiteboard — for students of every age.
See our AI tutor explain fractions with voice and a live whiteboard
Not AllAI Math ToolsAre Tutors
Most tools marketed as “AI tutors” are actually answer engines. Here’s the difference — and why it matters for your child.
Answer Engines
Input a problem, get the answer and steps. Never asks a question. Never checks understanding.
Photomath · Mathway · Wolfram Alpha · Symbolab · ChatGPT
Drill Platforms
Tests you on problems and scores answers. When you get it wrong, shows the right answer without teaching why.
IXL · XtraMath · Quizlet
Real Tutors
Explains concepts, asks questions, checks understanding, adapts to your child’s thinking. Doesn’t move on until it clicks.
Pennpaper · Khanmigo (text only) · Cuemath ($150+/mo, human)
The research is clear: A 2025 study found students using answer engines showed decreased critical thinking over time. Meanwhile, students using interactive AI tutors learned at up to 2× the rate of traditional instruction.
Sources: Gerlich (2025), Societies; Kestin et al. (2025), Scientific Reports
How It Works
Start Learningin 3 Minutes
No downloads. No complicated setup. Just math help when you need it.
Tell us what's confusing
Type your question, snap a photo of homework, or just say "I'm stuck on fractions."
Watch & listen
Your AI tutor draws the solution step by step on the whiteboard while explaining out loud.
Ask until it clicks
No judgment, no impatience. Ask the same question 10 times if you need to.
Comprehensive Coverage
220+ Topicsfrom K-12 toGraduate Level
From basic addition to differential equations—we've got every step of your math journey covered.
Foundations
14 topics
Algebra
23 topics
Geometry
18 topics
Trigonometry
10 topics
Pre-Calculus
14 topics
Statistics
28 topics
Calculus 1
8 topics
Calculus 2
14 topics
Multivariable
20 topics
Linear Algebra
16 topics
Diff. Equations
16 topics
Discrete Math
17 topics
Advanced Math
12 topics
Financial Math
8 topics
Built for Your Family
Kids Learn,Parents Stay Informed
Your child gets a patient, encouraging tutor. You get visibility into their progress without hovering over their shoulder.
What Your Child Sees
Learning That Keeps Them Coming Back
Streaks, achievements, and friendly encouragement keep kids engaged. They stay motivated because progress feels rewarding.
- Daily streaks to build study habits
- Achievement badges that celebrate progress
- Age-appropriate explanations and pacing
- Friendly AI tutor who never gets frustrated
Daily Progress
Keep your streak going!
0
Lessons
0
Badges
0%
Accuracy
Weekly Report
Sophie's activity
2h 45m
Time this week
0
Topics mastered
What You See
Stay Connected Without Hovering
See what topics they're working on, how long they're studying, and where they might need help—all from your own dashboard.
- Weekly progress reports sent to your email
- See time spent and topics covered
- Safe, COPPA-compliant environment
- Control session limits and screen time
Also great for older students
High Schoolers
SAT/ACT prep, algebra through pre-calc
College & Adults
Calculus, statistics, refresher courses
SAT Prep
Math Section
0
days left
Current Score
0
Target
680
Data Analysis
Career Track
Module 6 of 8
0.0
Hours learned
8 PM
Next session
Evidence-Based Approach
Built onLearning ScienceNot Just AI Hype
Every feature in Pennpaper exists because peer-reviewed research says it works. Here’s what the evidence told us to build.
Hear It Explained, See It Drawn
When your child listens to an explanation while watching it drawn out, they process through two brain channels simultaneously. Reading text while looking at diagrams overloads the same channel. Research calls this the modality effect — and it’s why Pennpaper talks while it draws.
Your Child Draws, Points, and Asks
This isn’t a lecture — it’s a conversation. Your child can draw on the canvas, circle something confusing, or point at a specific step and ask “why?” The AI sees what they’re pointing at and responds in context. Active participation beats passive watching every time.
Asks Questions. Checks Understanding. Doesn’t Just Tell.
Pennpaper doesn’t hand over answers — it guides your child to discover them. It asks “what do you think happens next?” and waits. It checks understanding before moving to the next step. This is how the best human tutors teach, and it’s how AI tutoring should work.
No Punishing Score Systems. No Timed Stress.
IXL’s SmartScore drops 8-12 points for a single mistake. XtraMath’s timers make kids cry. Pennpaper doesn’t punish mistakes — it uses them as teaching moments. Your child’s confidence grows alongside their skills, not in spite of the tool they’re using.
Learn by Playing
Practice MathWith Fun Games
Six mini-games with questions crafted around your current lesson. Every round reinforces exactly what you’re studying.
Term Swipe
Swipe right for true, left for false on math statements
Concept Match
Flip cards and match math terms to their definitions
Expression Snake
Guide the snake to collect math terms in the right order
Integral Climb
Jump between platforms and collect equation parts
Term Breaker
Break the bricks that match the math prompt
Proof Frogger
Navigate through lanes of proof steps to the conclusion
When It Helps Most
Homework HelpWhen You Can’tBe There
"Mom, I need help!"
It's 10pm, homework is due tomorrow, and you're exhausted. Pennpaper is ready 24/7 to help them through that algebra problem.
"I forgot how to do this"
Common Core looks nothing like the math you learned. Pennpaper teaches the way their school expects—no more late-night Google panic.
"Tutors are so expensive"
$60/hour for a human tutor adds up fast. Pennpaper gives your child unlimited help for the price of a few coffees per month.
"They won't ask me for help"
Some kids are embarrassed to admit they're struggling. An AI tutor is private, patient, and never judges—so they actually ask questions.
Trusted by Families
Students AreLearning More
500+
Students learning
10k+
Lessons completed
94%
Would recommend
“My daughter used to cry over math homework. Now she asks to do extra problems. The voice explanations make everything click.”
Sarah M.
Parent of 4th grader
“It’s like having a tutor who never gets annoyed when I ask the same question again. I went from a C to a B+ in algebra.”
James T.
10th grade student
“I assign Pennpaper as homework help. Students who use it consistently are performing a full letter grade higher on tests.”
Ms. Rivera
7th grade math teacher
For Parents
Stay connectedto their journey
No more wondering "what did they learn today?" Get real insights into your child's progress without hovering over their shoulder.
~ Relax, we've got this ~
Safe & Age-Appropriate
COPPA compliant. No ads, no chat with strangers. Content is always educational.
See What They Learn
Parent dashboard shows sessions, topics covered, and progress over time.
Control Screen Time
Set session limits. This is for learning, not endless scrolling.
Aligned with School
Covers Common Core standards. Helps with actual homework, not random topics.
Built to Teach, Not to Cheat
100% of high school principals say AI-enabled cheating is their top concern. Unlike Photomath and ChatGPT — which hand over complete solutions students can copy — Pennpaper never gives direct answers. Your child has to work through each step on the canvas. They draw, they answer questions, they explain their thinking. The AI guides — it doesn’t solve.
You can’t screenshot a Pennpaper session the way you can copy a Photomath answer. The learning happens in the interaction.
For Teachers
Give every studenta personal tutor
Create a classroom, share a join code, and let PennPaper handle differentiated practice while you focus on instruction.
Classroom Management
Create classrooms, share join codes, manage rosters from your dashboard.
Student Progress
See which students are struggling, what topics need reteaching, and who's ahead.
Homework Help 24/7
Students get AI tutoring outside class hours — without getting answers handed to them.
Built on Evidence
The ResearchBehind EveryFeature
2×
Learning gains doubled
Students using interactive AI tutoring learned at double the rate of traditional active-learning classrooms.
Kestin et al. (2025), Scientific Reports (Harvard)
g = 0.50
Visual math works
Visualization interventions improve math outcomes across 41 studies and 10,500+ students. Medium effect size.
Schoenherr et al. (2024), Learning and Instruction
d = 0.76
Near human-tutor parity
Well-designed step-based AI tutoring achieves 96% of the effectiveness of human 1:1 tutoring (d = 0.79).
VanLehn (2011), Educational Psychologist
3 in 4
Students aren’t proficient
73% of US 8th graders and 78% of 12th graders score below proficient in math. The need has never been greater.
NAEP 2024 Mathematics Assessment
Simple Pricing
Real Voice Tutoringfor $14.99/mo
Private math tutors charge $40-80/hour. Get 24/7 availability and unlimited patience for less than a single tutoring session.
$60/hr
Private tutor
$14.99/mo
20 sessions per month
Free
See if it clicks — no card needed
- 3 voice sessions per month
- Complete whiteboard experience
- 5 math game launches per month
- Basic progress tracking
- Try any math topic
Learn
Everything one student needs to succeed
Less than a single hour of human tutoring
- 20 sessions per month (soft cap)
- 60 math game launches per month
- 2 concept clips per session
- Full whiteboard + canvas tools
- Session history & replay
- 220+ math topics
Pro
Priority quality for serious learners
- Everything in Learn
- Priority session quality
- 4 concept clips per session
- Detailed progress analytics
- Extended session history
Family
Up to 3 kids — that’s $13.33/kid
- 20 sessions per kid per month
- Shared games + concept clip allowances
- Individual progress per child
- Parent oversight dashboard
No credit counting. No session limits. Cancel anytime.
7-Day Money-Back Guarantee
Not helpful? Full refund, no questions.
How Pennpaper Compares
Explains out loud
Draws solutions visually
Checks understanding
Student can interact on canvas
Prevents answer dependency
Curriculum-aligned content
Monthly price
| Feature | Pennpaper | Khanmigo | Photomath | IXL |
|---|---|---|---|---|
| Explains out loud | Yes | Limited | No | No |
| Draws solutions visually | Yes | No | Animated | No |
| Checks understanding | Yes | Yes | No | No |
| Student can interact on canvas | Yes | No | No | No |
| Prevents answer dependency | Yes | Yes | No | Partial |
| Curriculum-aligned content | Growing | Yes | Yes | Yes |
| Monthly price | $14.99 | $4 | $9.99 | $9.95-$19.95 |
Pennpaper focuses exclusively on math. For other subjects, check Khan Academy or Brilliant.
What Our Users Say
Loved by Parents & Students
CommonQuestions
Photomath and ChatGPT are answer engines — they solve problems for your child. Research shows this creates dependency and can actually decrease critical thinking over time. Pennpaper is a tutor — it explains concepts out loud while drawing them on screen, asks your child questions, and doesn't move on until understanding is confirmed. Your child does the thinking; the AI does the guiding.
Yes. Pennpaper's approach is built on four peer-reviewed research findings: (1) visual math instruction improves learning by a medium effect size across 41 studies (Schoenherr et al. 2024), (2) voice + visuals outperform text + visuals for complex material (Mayer 2025, Ginns 2005), (3) interactive AI tutoring doubled learning gains vs. traditional instruction in a Harvard RCT (Kestin et al. 2025), and (4) step-based AI tutoring approaches human tutoring effectiveness at d = 0.76 vs 0.79 (VanLehn 2011).
The opposite. Pennpaper never shows direct answers. It guides your child through each step, asks them questions, and requires them to work on the canvas. You can't copy-paste a Pennpaper session the way you can screenshot a Photomath solution. We designed it so the learning happens in the interaction itself.
Khan Academy's core content is free — and it's excellent. Khanmigo (their AI tutor) costs $4/month but is text-only. Pennpaper adds three things the research says matter: voice explanation (modality effect), live visual drawing (visualization effect), and interactive canvas participation (active learning). Real-time voice and visual AI costs more to run than text chat. If text-based learning works for your child, start with Khan Academy. If they need to hear and see math explained, that's what we built.
Plans include monthly tutoring access plus plan-based game and concept-clip allowances. Tutoring sessions run for about 15 minutes on the interactive whiteboard, and extra features like math games and animated concept clips are capped by tier so usage stays predictable.
Pennpaper adapts to any level: elementary students (ages 8+) get colorful, encouraging explanations with gamification. High schoolers get focused SAT/ACT prep and homework help. College students and adults get straight-to-the-point explanations for calculus, statistics, and beyond. The AI adjusts its pacing, vocabulary, and teaching style automatically.
Yes. We're COPPA compliant for children under 13, and we never sell user data. Voice sessions are processed in real-time and not stored. Parents have full visibility and control over their child's account.
We offer a 7-day money-back guarantee on all paid plans. Try it out—if Pennpaper isn't helping, we'll refund your purchase, no questions asked.
More questions? See all FAQs
See what openswith early access
Start the 3-step flow to test the classroom now, or join the waitlist if you only want launch updates.