
SpecialistGeneral conversational AI workspace capable of deep reasoning, tutoring, and generating custom study plans.

Astra AI records 7,356,157 monthly visits with +40.3% month-over-month growth and Freemium, Paid pricing. PrepAI records 0 monthly visits with 0% growth and Free Trial, Paid pricing.

AI-assisted assessment platform that turns notes and links into ready-to-run quizzes
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | astra-ai.co | app.prepai.io |
| Pricing Model | Freemium, Paid | Free Trial, Paid |
| Monthly Visits | 7.36M (7,356,157) | 0 (0) |
| MoM Traffic Delta |
| +2.11M (+40.3%) |
| 0 (0%) |
| Primary Market & Share | 🇻🇳 Vietnam (14.3%) | 🌐 Global (—) |
|---|
| Direct Visits / mo | 2.36M | 0 |
|---|
| User Rating | 4.3 | 4.2 |
|---|
| Supported Platforms | Website | Website |
|---|

Your personal AI tutor for every subject, from notes to exam day.
Upload your notes, slides or past papers, set your exam date and target grade, and Astra assembles a topic-by-topic revision plan built around exactly what you'll be tested on.
Ask by typing, speaking or snapping a photo. The tutor explains concepts at your level, asks follow-up questions and keeps going until the idea actually clicks.
Generate guided lessons, flashcards, quizzes, true/false and smart-text exercises, plus an auto-generated podcast so every learning style is covered.
Practise with realistic oral and timed written mock exams that get graded, so you know where you stand before the real thing.

AI-assisted assessment platform that turns notes and links into ready-to-run quizzes
Draft questions from notes, documents, links or recordings instead of writing them manually, with support for academic question banks and blueprints.
Standard, subject-focused and higher-order thinking (HOTS) quiz modes let you match the assessment to the course objective.
Create picture-based questions automatically to test concept recognition and add variety to standard text quizzes.
Score submissions automatically and review performance data to spot topics where learners need more support.

SpecialistGeneral conversational AI workspace capable of deep reasoning, tutoring, and generating custom study plans.


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SpecialistGeneral conversational AI workspace capable of deep reasoning, tutoring, and generating custom study plans.
SpecialistShare and access study materials worldwide — with AI study tools built in
AI study app that converts notes, PDFs, and videos into interactive flashcards and gamified quizzes.
All-in-one student study platform that solves homework problems, predicts exams, and generates custom flashcards.
Free study platform that automatically generates flashcards and practice tests from your lecture notes and files.
AI learning platform that turns course materials into interactive flashcards, quizzes, study notes, and video explainers.
AI learning assistant that automatically converts course materials and lectures into study guides and quizzes.
SpecialistAI-powered exam preparation platform providing mock tests, spaced-repetition flashcards, and audio lesson summaries.
Free AI study partner that turns your course material into practice questions, guides and flashcards