Science
STEMSafe, hands-on experiments and real chemistry — bubbling beakers, reactions and the “why” behind them, explained at a kid’s pace.
ExperimentsReal chemistryThe “why”
Studyfin Polymath — the AI tutor that adapts when your child is stuck
🦉 Studyfin Polymath · Pre-K–12
The AI tutor that adapts when your child is stuck
Adaptive lessons and real STAAR, FAST & CAASPP practice, Pre-K–12.
First month freethen $19.99/mo · cancel anytime
✍️ Write it
Kids answer by handwriting
They write by hand — even fractions and equations — and Finn reads and checks it, right on the device.
First month freethen $19.99/mo · cancel anytime
🎯 Test-ready
Built for your state's real test
Full-length STAAR, FAST & CAASPP practice, built to the blueprint and scored your state's way.
First month freethen $19.99/mo · cancel anytime
🎓 College prep
Ready for the SAT & ACT
Full-length SAT & ACT practice, matched to each exam and scored on an estimate of the real scale.
First month freethen $19.99/mo · cancel anytime
🛡️ Safe by design
Safe, and you're in control
No ads. Kid-safe AI that stays on the lesson. Parent controls. Privacy that follows COPPA & FERPA.
First month freethen $19.99/mo · cancel anytime
🔒 COPPA & FERPA privacy
🛡️ Kid-safe, AI-moderated
💳 Secure payments via Stripe
✨ First month free · cancel anytime
Sponsored · Featured tutors
Meet some of our standout tutors
A few featured educators on Studyfin. These are sponsored placements.
🔬 STEM, made to click
Watch STEM come alive
Not worksheets — experiments, code and discovery kids can see. Scroll to stack them up.
Math
CoreFrom counting to algebra, Finn breaks every problem into steps, reacts the moment a child is stuck, and turns practice into a game.
Step by stepAdaptiveGamified
Coding
Future-readyKids build with friendly blocks and real code, guided step by step — problem-solving that carries into every other subject.
Blocks & codeGuidedProblem-solving
Space
DiscoverySpace and the world beyond — Finn turns big questions into little discoveries kids can’t wait to explore.
AstronomyBig questionsWonder
Biology
Life sciencePlants, animals and the human body — life science kids can poke, grow and wonder about, not just memorize.
NatureHuman bodyHands-on
Engineering
BuildGears, blocks and little robots — hands-on engineering that turns “what if” into “I made it work.”
Build & testRoboticsDesign
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Subjects, Pre-K–12
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Skills mapped to standards
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Verified state-test questions
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Real test blueprints
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Questions cross-checked
One connected platform
One platform. Every way to learn
One adaptive core powers lessons, practice, live tutoring, classes, exams and gradebooks — getting smarter with every answer.
Inside the app
Learning kids actually want to open
Pick up exactly where they left off, every subject a tap away, and streaks, levels and coins that turn learning into a daily habit.
M
Hi, Maya!Grade 5 · let's learn
🔥 9🪙 320
▶ ContinueFractions · Part 2
65% complete · 3 lessons done today
🧮
Math
📖
Reading
🔬
Science
🌍
Social
✍️
Writing
🧠
Logic
Meet the tutor
Your child gets a private AI tutor who never tires
Animated lessons, voice questions and instant explanations — with guardrails that keep every conversation on the lesson.
Live
½ + ⅓ = ⅚
Why do we need a common bottom? 🤔
Picture two pizzas 🍕 — one cut in halves, one in thirds. The slices aren't the same size! We cut both into sixths so we can add them.
ohhh that makes sense!
100%Fractions mastered
+50 XP🔥 7-day streak
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Pick a topic, any topic
16 subjects, 350+ topics — auto-filtered to your child's grade.
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Gemini AI builds the lesson
A fresh adaptive lesson — explanation, animated diagrams, worked example.
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Ask the tutor anything (out loud!)
Stuck? Tap the mic and ask — Finn explains in plain language, on-topic only.
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Master & level up
Pass the quiz → difficulty bumps, XP and streaks grow. Parents see every win.
Why it works
Built on the science of adaptive learning
Studyfin combines spaced practice, immediate feedback, and multi-modal explanation — proven drivers of long-term retention.
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Subjects covered
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Topics Pre-K–12
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Re-teach attempts per topic
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AI-generated, every time
Standards-aligned
Mapped to the standards your school trusts
Every Math & English topic maps to the Common Core (CCSS); Math, ELA, Science & Social Studies also map to exact Texas TEKS codes, K–12. Downloadable alignment reports for both.
📋 Curriculum Standards Compliance Report
For your curriculum team: what we align to (CCSS · TEKS · reading level), how it's enforced on every item, and how to verify it.
Common Core (CCSS)
Math & ELA topics across Kindergarten–Grade 12, mapped to exact CCSS codes (e.g. 3.OA.A.1, RF.K.3.A, A-REI.B.4).
Texas (TEKS) — exact codes
99% of K–12 topics map to exact TEKS or CCSS codes — over 680 distinct TEKS student-expectation codes across Math, ELA, Science & Social Studies (e.g. C.9(A), USH.7(C)). Every high-school course is fully mapped: Biology, Chemistry, Physics, U.S. & World History, Government, Economics & Geography.
Pre-K ready
Pre-Kindergarten aligned to the 2022 Texas Prekindergarten Guidelines — school-readiness across early literacy, math, science & social studies.
Read at the right level — every time
Every lesson & quiz is checked for grade-level reading difficulty — using Flesch–Kincaid and our own Studyfin Readability Index (SRI) — and rewritten if it reads too hard. Kids are tested on the concept, not on reading ability.
International reading levels (CEFR)
Reading levels also map to the CEFR framework (A1–C2), so content holds up to international benchmarks — not just U.S. grade levels.
Mappings prepared by Contribute AI LLC and reviewed against the published CCSS, TEKS & CEFR — not an endorsement or certification by CCSSO, NGA, the Texas Education Agency, or the Council of Europe. The Studyfin Readability Index is independently developed.
🎯 State test practice
Built to your state's real test blueprint
Full-length practice for STAAR, FAST & CAASPP today — with more states coming — matched to each test's reporting categories and scored in your state's own performance levels. 1,100+ questions, each independently re-solved by two automated checks, so only agreed answers ship.
Blueprint‑accurate
Each practice test mirrors your test's reporting categories and item weights — the same shape as the real thing (STAAR blueprints, Smarter Balanced, B.E.S.T.).
Every question cross‑checked
Each item is independently re‑solved by separate automated checks — we keep only the questions they agree on, each tied to a real standard.
Scored your state's way
Results come back in your state's own performance levels, broken down by reporting category so you know exactly what to practice next.
Texas — STAAR ✓ Verified bank
Built to the official STAAR blueprint & TEKS — Math, Reading, Science & Social Studies — scored Did Not Meet · Approaches · Meets · Masters.
Florida — FAST ✓ Verified bank
Built to the B.E.S.T. reporting categories, scored to Achievement Levels 1–5.
California — CAASPP ✓ Verified bank
Built to Smarter Balanced claims & Common Core — plus CAST Science (NGSS) and Spanish (CSA). Scored Not Met → Exceeded, shared across all 13 Smarter Balanced states.
Spanish-language practice ✓ Verified
Full Spanish-language reading practice — passages & questions written and checked in Spanish — for California CSA and Texas STAAR Spanish, grades 3–8. Built for dual-language & bilingual programs.
More states Coming soon
Georgia Milestones, New York, MCAS and other Common Core states are on the way — they'll share our verified Math & Reading bank under each state's real test name. Texas, Florida & California are live today.
🔍 How we keep it accurate
Every question is written to the exact standards your test assesses, then independently re‑solved by two separate automated checks — we keep only the ones both agree on. Our most recent full audit re‑solved all 1,300+ questions from scratch and found zero incorrect answer keys. Authentic item types throughout — multiple‑choice, select‑all and type‑in. (Questions are AI‑generated and machine‑checked — aligned to each state's standards, not official test items.)
📋 See our full state alignment report
Every state, its test, standards & performance levels — the report you can show your child's teacher.
Practice is aligned to the standards each state's test assesses — not official test items. Performance levels are estimates modeled on each state's published scale. Test names are property of their respective state education agencies; Studyfin is not affiliated with or endorsed by them.
🎓 College prep
Get ready for the SAT & ACT
Full-length, section-by-section practice matched to what each exam assesses — original, AI-generated items, scored on an estimate of the real scale so juniors and seniors know exactly where they stand.
SAT® — digital format
Reading & Writing + Math, matched to the College Board reporting categories, with an estimated 400–1600 score and a per-domain breakdown.
ACT® — four sections
English, Math, Reading & Science on real section counts and timing, with an estimated 1–36 composite and category-level feedback.
Quick set or full-length
Warm up with a short set, or sit a full-length practice exam under real timing. Every item is original — never a real or secure test question.
SAT/ACT-style practice, aligned — not affiliated with or endorsed by College Board or ACT, Inc. Items are original and AI-generated, never real or secure test questions; any score is an estimate to guide practice. SAT® is a trademark of College Board; ACT® is a trademark of ACT, Inc.
Every subject, every grade
16 subjects · 2,600+ skills · Calibrated to your child's grade
Core academics aligned to CCSS & TEKS, plus world languages, health, life skills and coding — from counting blocks to calculus, phonics to Python.
🔤 Pre-K & Kindergarten
Learning to read? It starts with phonics
For the youngest learners, Finn teaches letters, sounds, sight words and early English — decodable practice, picture games and gentle read-aloud that build real, confident readers, at a Pre-K/K pace.
🔤 Letters & sounds🧩 Blending & decoding👀 Sight words🔊 Read-aloud📖 Early English
🚀 Start your reader free
🎓 Grades 11 & 12
Aiming for college? Practice for the SAT & ACT
For your oldest learners, Finn builds full-length, section-by-section SAT & ACT practice — original items matched to what each exam assesses, with an estimated score and a per-category breakdown so juniors and seniors know exactly what to work on next.
📝 SAT · 400–1600⏱️ ACT · 1–36🎯 Real reporting categories🧪 Quick set or full-length
🎓 Start SAT & ACT practice
Why Studyfin Polymath
Six things most apps don't do
The features parents actually pay for — and that worksheets and most apps skip. Tap any card for details.
Write-to-learn handwriting
Kids answer by hand right inside lessons and practice tests — Studyfin reads their writing instantly and privately on the device, checks the answer, and coaches neat handwriting (size, slant, spacing, reversed letters). It even reads fractions, equations and chemistry formulas, works with no pen (just type), and learns each child's handwriting over time. Try it →
Mistake notebook + daily review
Every miss is captured into a mistake notebook and turned into targeted practice, then resurfaced on a spaced-repetition schedule so it sticks — the dashboard shows what's due each day.
State-test practice
Full-length practice built to your state's real test blueprint — STAAR, FAST & CAASPP today, more states coming — every question independently cross-checked, scored in your state's own levels. Try it →
Homework Helper
Stuck on real homework? Finn gives guided, step-by-step help that teaches the method — not just the answer. (Family plans)
Re-teaches the moment they're stuck
When your child misses, Finn re-explains the idea a new way — a picture, an analogy, a worked example — lets them retry, and only moves on when it clicks. A 2-minute check places them first.
Parent dashboard + weekly email
Per-child "this week at a glance" — lessons, time, mastery and growth, plus exactly what to revisit — and a weekly progress email so you always know how it's going.
How families use Studyfin
Whatever your kid is going through, Studyfin meets them there
Adaptive isn't one-size-fits-all — here's how Studyfin shows up for three very different students. Illustrative examples, not real customer reviews.
Maya, 4th grade
"I kept getting the same kind of problem wrong. Studyfin showed me with pizza slices and now I get it."
- Quizzes shrink to the right size
- Re-teach uses concrete visuals
- Mastery is celebrated, not graded
Alex, 7th grade
"After I got 100% twice, Studyfin bumped me to pre-algebra. School is finally interesting again."
- Difficulty band grows with mastery
- Stretches into harder topics on its own
- Tracks deep mastery, not surface answers
Dana, working parent
"I see exactly which topics need attention before parent-teacher night, without nagging him to study."
- One link covers all your kids
- Weak topics flagged automatically
- Time-on-task at a glance
One platform · four ways to use it
Studyfin for your role
Start free as a family — or bring Studyfin to your classroom, school, learning center, or tutoring practice.
Families
Adaptive lessons, quizzes and verified state-test practice for your child. Start free →
Teachers
A free classroom for up to 15 students — join codes, assign & track, no setup. Start free as a teacher →
Schools
Standards-aligned adaptive practice for your classroom — live classes, exams & gradebook coming soon. See Studyfin for schools →
Learning centers
Your coaches, your students, your brand — one dashboard, per-coach pricing. Coming soon →
Tutors
Teach on your own schedule and keep 80% — we bring the students. Apply to teach →
A rich, safe place for kids to learn
Parents stay in control, content is kid-safe and accurate, tutors are vetted, and privacy is protected — and it's all enforced on our servers.
Block any subject or topic, per child.
Follows COPPA & FERPA; no data sold, no ads to kids.
Filtered, reviewed, age-appropriate.
No stranger contact — AI-moderated.
Simple pricing
One flat price. Every subject
One transparent monthly price for all 16 subjects, Pre-K to Grade 12 — no per-subject, per-hour fees. Start with a free trial.
Free
Try Studyfin with your child.
$0/forever
No credit card. 3 topics / day.
- All 16 subjects
- 1 student profile
- Adaptive quizzes
- Standard browser voice
⭐ Most popular
Family
One child. Everything unlocked.
$19.99/mo
$14.99/mo if billed yearly. First month free.
- Unlimited lessons
- Inline animated visuals
- Per-question explain & retry
- Homework Helper & weekly progress emails
- Parent dashboard
Family Plus
Multiple kids & parents.
$39.99/mo
First month free. Cancel anytime.
- Everything in Family
- Up to 4 child profiles
- Multiple parent accounts
- Household progress in one place
- Priority support
Also from Studyfin
Studyfin Polymath today — more coming soon
Start as a family today — with learning centers, live tutoring and school tools coming soon.
Studyfin Polymath · for families
AI-powered adaptive learning for Pre-K–12 — your child's personal tutor, Finn.
- Fresh AI lessons, quizzes & animated explanations
- Adapts in real time when a kid gets stuck
- Homework Helper, gamification & parent dashboard
Studyfin Centers · learning centers Coming soon
Run your tutoring center on Studyfin — your coaches, your students, one dashboard.
- Enroll students, assign coaches & track mastery
- The full adaptive curriculum, Pre-K–12
- Center-wide progress, attendance & reports
Studyfin Live · tutoring Coming soon
Vetted, background-checked human tutors — 1-on-1 and group classes.
- Matched by subject, grade & availability
- Secure booking & payments, kid-safe video
- Affordable group classes in the marketplace
Studyfin Classroom · schools Coming soon
A full online classroom suite — run your classes end-to-end.
- Your own teachers, live classes & attendance
- AI proctored exams, gradebook, rubrics & report cards
- Parent portal, conferences & AI-moderated messaging
- Audit log, staff roles, SSO & per-school feature toggles
📲 Get the Studyfin app
Learning on the go — install it on your child's phone or tablet, or just use it right here in your browser.
Or use it right in your browser — add Studyfin to your Home Screen →
Welcome back
Who's signing in?
Students & parents
👩🏫 Teacher, school or learning-center staff? Sign in →
Learning center · staff
School · staff
District & tutors
Already tutoring with Studyfin? Open your tutor workspace →
School & organization sign-in is on the web — visit studyfin.ai in your browser to sign in.
FAQ
Questions, answered
What ages is Studyfin for?
Studyfin is built for primary and middle school students — grades Pre-K through 12. Lessons are auto-calibrated to your child's grade and current difficulty.
How does the "adaptive" part actually work?
Each topic has a difficulty band (1–5). Pass a quiz and the band moves up; miss questions and Studyfin re-teaches the concept a new way — an analogy, a visual, or a worked example. After three re-teach attempts, the topic is flagged for parent or teacher review.
Is it safe for kids?
Yes. All AI output is filtered through Google's safety classifiers for age-appropriate content. Studyfin never asks for personal information. Sign-in is Google-only with parent consent expected for younger kids.
How do parents see progress?
Sign in with Google and enter your child's 6-digit Student ID. The dashboard shows every topic they've worked on — current difficulty, last score, and whether it's mastered.
What subjects are covered?
Math, English & Reading, Science, Social Studies, History, Geography, Coding, Art, Music, Logic Puzzles, Health, Study Skills, and world languages (Spanish, French, Mandarin & ASL) — 16 subjects total, with 350+ topics across elementary, middle, and high school (Pre-K–Grade 12), plus SAT & ACT practice.
How much does it cost?
Families start with a free trial, then choose a Family plan (from $19.99/mo). Schools, learning centers and tutors have their own plans. See the Pricing page for full details.