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Astra AI records 7,356,157 monthly visits with +40.3% month-over-month growth and Freemium, Paid pricing. CodeHound records 116 monthly visits with +70.6% growth and Freemium pricing.

AI-powered smart contract auditing by CyberSanctus
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | astra-ai.co | cybersanctus.com |
| Pricing Model | Freemium, Paid | Freemium |
| Monthly Visits | 7.36M (7,356,157) | 116 (116) |
| MoM Traffic Delta | +2.11M (+40.3%) | +48 (+70.6%) |
| Primary Market & Share | 🇻🇳 Vietnam (14.3%) | 🌐 Global (—) |
| Direct Visits / mo | 2.36M | 49 |
| User Rating | 5 | 5 |
| 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-powered smart contract auditing by CyberSanctus
A fine-tuned model built on OpenAI's GPT-4o reasoning is combined with the firm's scanners to surface vulnerabilities and risk patterns in Solidity code.
Existing static and dynamic analysis tools run alongside the AI layer to catch both pattern-based weaknesses and behaviour-level issues.
Vulnerability detectors are grounded in widely recognized security frameworks and are updated continuously as new attack classes emerge.
Connect a repository so the latest commits are scanned automatically, removing the need to upload or re-download project files manually.
Snap a homework question and get step-by-step AI answers
Computational knowledge engine for expert answers
All-in-one AI study tool for homework help, exam prep, notes, and flashcards
One workspace to write, check and summarize
Turn any lecture, PDF, or video into notes, flashcards, and quizzes in minutes
AI contract drafting, review, and redlining grounded in millions of real agreements
A free, human-like AI assistant for thinking, creating and everyday tasks