Astra AI records 7,356,157 monthly visits with +40.3% month-over-month growth and Freemium, Paid pricing. Postel records 121,244 monthly visits with +5.8% growth and Free Trial, Paid pricing.
Your personal AI tutor for every subject, from notes to exam day.
AI writing assistant that drafts and schedules social posts in your own voice
| Dimension / Metric | | |
|---|---|---|
| Official Domain | astra-ai.co | postel.app |
| Pricing Model | Freemium, Paid | Free Trial, Paid |
| Monthly Visits | 7.36M (7,356,157) | 121.24K (121,244) |
| MoM Traffic Delta | +2.11M (+40.3%) | +6.68K (+5.8%) |
| Primary Market & Share | 🇻🇳 Vietnam (14.3%) | 🇺🇸 United States (14.8%) |
| Direct Visits / mo | 2.36M | 21.61K |
| 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 writing assistant that drafts and schedules social posts in your own voice
Reads your historical posts to map line length, opening style, vocabulary and banned phrases so drafts sound like you.
Generates one drafted post for every day you normally publish and slots each into a calendar automatically.
Publishes to LinkedIn out of the box and connects X, Bluesky, Mastodon, TikTok and YouTube.
Accepts call notes, links, voice memos and podcast recordings as source material for new content.
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.
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.
AI learning assistant that automatically converts course materials and lectures into study guides and quizzes.
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.
SpecialistAI-powered exam preparation platform providing mock tests, spaced-repetition flashcards, and audio lesson summaries.
AI study platform that converts course materials into interactive practice questions and flashcards.
AI study platform that converts course materials into interactive practice questions and flashcards.
AI tutoring and homework platform providing step-by-step solutions and guided tutor modes for STEM subjects.
Schedule and automate social media on 12 platforms — with AI agents that post for you
Schedule and automate social media on 12 platforms — with AI agents that post for you
