
SpecialistGeneral conversational AI workspace capable of deep reasoning, tutoring, and generating custom study plans.
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. iTextMaster records 0 monthly visits with -100% growth and Free pricing.

Private, browser-first PDF tools plus a developer PDF API
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | astra-ai.co | itextmaster.com |
| Pricing Model | Freemium, Paid | Free |
| Monthly Visits | 7.36M (7,356,157) | 0 (0) |
| MoM Traffic Delta | +2.11M (+40.3%) | -1.33K (-100%) |
| Primary Market & Share | 🇻🇳 Vietnam (14.3%) | 🌐 Global (—) |
| Direct Visits / mo | 2.36M | 0 |
| User Rating | 4.3 | 4.3 |
| 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.

Private, browser-first PDF tools plus a developer PDF API
A deep catalog covering merge, split, compress, linearize, OCR, encrypt, redact, flatten, metadata removal, format conversion and table extraction.
Most file tools run entirely in your browser, so everyday PDF work does not require uploading your document to a server.
Backend endpoints for merge, split, HTML-to-PDF, webpage-to-PDF, invoice generation, redaction and OCR, billed through monthly credits.
Tools that need server rendering, URL fetching or API processing state that clearly before you submit any data.

SpecialistGeneral conversational AI workspace capable of deep reasoning, tutoring, and generating custom study plans.
SpecialistGeneral conversational AI workspace capable of deep reasoning, tutoring, and generating custom study plans.
AI study app that converts notes, PDFs, and videos into interactive flashcards and gamified quizzes.
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.
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.
Free study platform that automatically generates flashcards and practice tests from your lecture notes and files.
A free, AI-powered PDF editor for every device

SpecialistInteractive learning platform teaching math and science through hands-on visual puzzles and guided AI tutoring.
SpecialistOnline exam preparation platform combining course study materials with an interactive AI study tutor.
SpecialistOnline exam preparation platform combining course study materials with an interactive AI study tutor.

AI learning platform that turns course materials into interactive flashcards, quizzes, study notes, and video explainers.
AI learning platform that turns course materials into interactive flashcards, quizzes, study notes, and video explainers.

Free AI-powered PDF editor, converter and reader for every device
Free AI-powered PDF editor, converter and reader for every device

All-in-one online PDF editor with AI helpers for reading, summarizing, and generating documents
All-in-one online PDF editor with AI helpers for reading, summarizing, and generating documents

Cross-platform PDF editing with GPT-powered AI for reading, translating, and signing documents