Take a photo. Get the grade.
Photograph the answer sheet and the AI compares it with the key, counts the hits and calculates the student's grade for you to review.
Turn any document
into an intelligent test.
Upload a PDF, a note or a textbook chapter. Generate a test, a mind map and a presentation from the material. Study solo or challenge your class in the arena.
Upload the handout or the lesson chapter. Get a test with answer key and rationale, run it live in class through the arena and grade exams from a photo.
- Test — Questions with answer key and rationales
- Games — Seven games with XP and rankings
- Arena — Your class answering live
- Mind map — The whole chapter on one screen
- Presentation — Slides ready for class
- Essay — Scored per competency, ENEM standard
- Photo grading — Snap the answer sheet, get the grade
- Classroom — Classes, assignments and tracking
- Library — Official ENEM exams ready to import
- VideoLab — YouTube lessons become study material
No card · you choose to watch a video and generate free · For students and teachers
From raw document to ready-made test, in 3 steps.
Upload or describe
PDF, slides, photo of a note or a plain-text brief.
The AI structures
The AI generates the test, map and presentation. You review and edit each item.
Study or open an arena
Solve it alone or open an arena. Code and password auto-generated, ranking live.
Watch a PDF become a test and get answered, for real.
Real platform recording: a biology chapter in PDF becomes a 10-question test, the student answers it and gets the result with answer key. Generation and answering segments sped up.
Play right here, before you sign up.
This is a pocket version with sample questions. In the app, Daily Challenge, Survival, Sure Bet and Naval Battle use real ENEM questions, and every round earns XP, levels and achievements, with a weekly ranking among friends and Arena rooms. Five games don't use credits. Flashcards and Error Hunt use credits to generate content with AI, and so do games on a topic you choose.
Arena - study by competing, live.
Illustrative scoreboard. The animation above simulates a room; it does not show real players or results. In the app, you can open a room from a test, share its code and password, and follow the answers.
Built for students and teachers.
Essays graded ENEM-style.
Students and teachers create essay prompts. The student practices and the AI analyzes the text, returning a score per competency (0–1000); the teacher grades the class's essays with the same support.
Ready-made exams to import.
A public library of themes and exams, such as the ENEM editions, that students and teachers import with one click and start using right away, without building from scratch.
The animations above illustrate the screens; they do not show a real session or student grades. In the app, teachers can import exams, work with essays, and grade tests from photos.
Studying should be an act of discovery, not transcription. SimulAI gives that time back to you.
Every module.
One unified study flow.
Tests from PDF, DOCX or a photo of your notes.
Multiple choice with 4 to 8 alternatives. Each item carries an answer key, rationale and source reference. Everything editable, with AI suggestions.
Study by competing: multiplayer rooms with live ranking.
Open a room from any test. Score by accuracy and time, leaderboard at the end, history per player.
Maps that connect.
Navigable maps from the same source. Export to PDF (Free) or DOCX (PRO). Free editing.
Slides with a structure for you to review.
Decks with table of contents and chapters. Export to PDF or PPTX, or open in Gamma for visual polish.
Turn a video lesson into a study laboratory.
Open a lesson on YouTube and generate a summary, chapters, a mind map, a study plan, a practice test and a chat with the lesson.
For teachers and institutions.
Reclaim the hours of prep - without giving up pedagogical rigor.
AI-editable question bank
Every question ships with answer key, rationale and source reference. Rewrite by hand or ask the AI.
Live in-class arena
Run in the lab or on student phones. Auto code, password, live ranking and final podium.
Moderation and room safety
Reports and sanctions inside the arena, with per-participant history. Healthy room in large groups.
Institutional privacy
LGPD/GDPR · isolated data · encryption in transit and at rest · full export anytime.
A plan for every study routine.
Price currency: USD
Free
US$ 0 forever
Start studying with AI.
- 300 credits per month
- Standard model and FLUX 3 Klein or Recraft mind map art
- A video you choose unlocks each generation
- Up to 10 questions per quiz
- PDF with watermark and 30 days of history
- Teacher: up to 5 students per grading
Ad-free
US$ 4.99 /month
The same credits and models as Free, without watching ads.
- 300 credits per month
- Generate without ads
- Standard model and FLUX 3 Klein or Recraft mind map art
- PDF with watermark and 30 days of history
- Teacher: up to 5 students per grading
Plus
US$ 14.99 /month
or US$ 143.88 billed yearly (US$ 11.99/mo)
More credits and better models for weekly study.
- 1,500 credits per month
- Standard and Advanced models, FLUX and GPT Image 2 art
- Up to 20 questions per quiz
- PDF without a watermark
- 90 days of history
- Teacher: up to 50 students per grading
PRO
US$ 19.99 /month
or US$ 191.88 billed yearly (US$ 15.99/mo)
Every model and editable files.
- 3,000 credits per month
- Every model, including Maximum, Flare and GPT Image 2 HD
- Up to 40 questions per quiz
- Word and PPTX export and unlimited history
- 20% off credit packs
- 20% off all courses on the platform
- Teacher: up to 300 students per grading
What each generation costs
- Quiz
- 30 credits
- Essay
- 20 credits
- Mind map
- from 20 credits
- VideoLab lesson
- 30 credits
- Exam grading
- 20 credits + 4 per student
Prices with the Standard model. Stronger models and PDF reading add to the cost, and the app shows the total before you generate. Exam grading, classes and the Arena are on every plan.
Credit packs
- 300 credits: R$ 9,90
- 1,000 credits: R$ 29,90
- 3,000 credits: R$ 79,90
For when the month's balance runs out. Valid for 12 months in both modes. On PRO, each pack costs 20% less. Charged in BRL.
Prices in the selected currency. Each account has one subscription, valid in student and teacher modes, with the same credit balance in both. Plan credits renew every month and don't roll over. You can change the browser's currency suggestion above.
Frequently asked.
Which document formats can I upload?
PDF, DOCX and images (PNG, JPG, JPEG, AVIF). Photos of handwritten notes work well. You can also send a plain-text brief, no file attached.
Do the games cost anything?
Daily Challenge, Survival, Sure Bet, Build the Proposal and Naval Battle don't use credits. Flashcards and Error Hunt use credits to generate content with AI, and so do games on a topic you choose. You can also try a pocket version right here on this page, no account needed.
How does the multiplayer arena work?
Open a room from any test: code and password auto-generated, players join via browser. Score by accuracy + time, leaderboard and per-question analysis at the end.
Is VideoLab available now?
Not yet. The feature is in development, and the screen shown on this site is an illustrative preview, not a functional demonstration. The waitlist is available inside the app.
How are my data and documents handled?
LGPD and GDPR. Files isolated in your account, encryption in transit and at rest. Content sent to AI providers only to generate what you asked - never for training.
Can I manually edit the generated questions?
Yes. Edit prompt, alternatives, answer key and rationale. You can also build tests from scratch with AI help.
What's the difference between Free, Ad-free, Plus and PRO?
Free gives you 300 credits a month, with an optional video before each generation. Ad-free has the same 300 credits without that video. Plus gives you 1,500 credits a month and unlocks the Advanced model, FLUX and GPT Image 2 art, watermark-free PDF and 90 days of history. PRO gives you 3,000 credits a month and unlocks every model, Word and PPTX export, unlimited history, 20% off credit packs and 20% off all courses on the platform. Each account has one subscription, valid in student and teacher modes, with the same price and the same balance.
How do credits work?
Each AI generation takes credits from your balance. With the Standard model, a quiz costs 30, an essay 20, a mind map from 20, a VideoLab lesson 30 and exam grading 20 plus 4 per student. Stronger models and PDF reading add to the cost, and the app shows the total before you generate. Plan credits renew every month and don't roll over. If you run out, there are packs of 300, 1,000 and 3,000 credits for R$ 9,90, R$ 29,90 and R$ 79,90, valid for 12 months. On PRO, packs cost 20% less.
Does the Free plan show ads?
Yes, and you decide when you see them. On Free, each generation is unlocked by a short video (15 to 30 seconds) that only starts after you tap Watch and generate - nothing plays on its own, and you can cancel beforehand. Ad-free, Plus and PRO remove that video in the app. On this public site, when enabled, an ad may appear only at the end of blog articles, regardless of the app plan.