The vocabulary app that adapts to every student.
What does this word mean?
Tenacious
Grade 7 · Vocabulary · Word 4 of 10
BrainGenius.ai combines adaptive learning with spaced repetition so every session feels just right — never too easy, never overwhelming. Students stay in the zone and actually retain what they learn.
Trusted by schools and educators
Everything a student needs to master vocabulary
Designed for real classrooms, powered by the same science that top language apps use — built for K-12 students.
Adaptive Difficulty Engine
The AI continuously adjusts question difficulty based on your performance. Too easy? It challenges you more. Struggling? It slows down and reinforces. You stay perfectly in your learning zone.
Spaced Repetition (SM-2)
Words you know get reviewed less. Words you struggle with come back sooner. Built on the proven SM-2 algorithm — the same science behind Anki and Duolingo — for maximum long-term retention.
AI-Generated Word Lists
Teachers can generate grade-appropriate word sets in seconds using AI. Provide a topic, a book, a URL, or a PDF and the system builds structured vocabulary content ready for students.
Multiple Game Modes
Beyond multiple choice — word searches, crosswords, matching games, and fill-in-the-blank challenges. The same word list powers every game type so setup happens once.
Real-Time Progress Tracking
Teachers see exactly where each student stands — mastery scores, streak data, words learned, and areas needing attention. No more guessing who needs extra help.
Roster & Class Management
Create student accounts directly from the teacher dashboard. Generate usernames and login codes — no student email required. Perfect for classrooms where school emails are inconsistent.
Personalized learning that never plateaus
The engine tracks every answer, every hesitation, every review. It builds a mastery profile per word and uses that to schedule the perfect next session — keeping students challenged but never lost.
Generate words for your students to learn through various sources
Stop spending hours building word lists manually. Let the AI do the heavy lifting — from grade-level standards to custom topics to extracting vocabulary straight from your curriculum.
Recommended Words by Grade Level
Instantly generate a vocabulary list aligned to your students’ grade. Words are curated from academic standards and leveled reading lists.
- K–12 grade bands supported
- Aligned to reading level expectations
- Pre-loaded definitions, prompts & example sentences
- Instantly ready for student practice
AI-Generated Words by Topic
Tell the AI what you’re studying — ancient civilizations, ecosystems, the Civil War — and it generates a rich vocabulary set tailored to that topic.
- Any subject or theme
- Matches grade-level reading complexity
- Includes context-specific definitions
- Refine in conversation: “make these harder”
Words from URLs or PDF Uploads
Paste a webpage link or upload a PDF — a textbook chapter, article, or passage — and BrainGenius.ai extracts the most valuable vocabulary for your students.
- Paste any HTML link or article URL
- Upload PDFs (textbooks, worksheets, passages)
- AI picks the most academically useful words
- Filtered to match your grade level setting
Students and teachers love it
Real results from real classrooms. Here’s what educators and students are saying.
“My students actually ask to do vocabulary practice now. The adaptive difficulty keeps them engaged because they're always working at exactly the right level — not bored, not frustrated.
“I used to spend hours building vocab lists for each unit. Now I paste in a PDF of our textbook chapter and BrainGenius generates a complete word set with definitions in about 30 seconds.
“It's like having a tutor that remembers every word I've ever gotten wrong. I went from a C to an A in English this semester and my teacher says my writing vocabulary has completely changed.
“The spaced repetition is genuinely different from flashcards. My students retain vocabulary from units we covered months ago. Test scores on cumulative assessments have jumped noticeably.
“Setting up student accounts was painless. I generated usernames and codes for my whole class in minutes. No scrambling for school emails, no IT tickets — just ready to practice on day one.
“I love the word search and matching games. It doesn't feel like studying — it feels like a game. But then I actually know the words on the test. My mom thinks I studied all night but it was just BrainGenius.
Ready to transform how your students learn vocabulary?
Join hundreds of teachers using AI-powered adaptive learning to close vocabulary gaps for good. Free to start — no credit card needed.