English for STEM founders,
from beginner to fluent.
AI English speaking practice for students who want to work in tech. Technical vocabulary, pitching, presenting, and CEFR certificates from A1 to C1. No teacher, no fixed schedule.
Built for students who want to build things
Beginner to advanced. The English behind engineering, AI, and cybersecurity, plus the speaking skills you need to work in those fields.
Build your English foundation. Grammar, speaking confidence, and your first technical vocabulary. For students new to English or rebuilding the basics.
Read real technical material, discuss it out loud, and start talking about your own ideas. Scenarios pulled from AI, cybersecurity, engineering, and science.
Communicate like a founder. Pitch an idea, present a product, explain a complex thing simply, and handle a technical interview, all in clear English.
How it works
Practice speaking with Crow Sentinel anytime, and earn a CEFR certificate when you finish each level.
Free Placement Test
Ten minutes. Our AI places you at exactly the right CEFR level, from A1 to C1. No credit card, no commitment.
Practice Speaking
Talk with Sentinel on any topic, as often as you want. Real conversation, instant feedback, no schedule.
Speak Anytime with Sentinel
Sentinel runs you through technical vocabulary, speaking scenarios, and presentation drills. Available 24/7 — use it as much as you want.
Earn Your Certificate
CEFR certificates A1 to C1. Recognized by universities and employers worldwide. Your level means something verified.
Meet Crow Sentinel,
Your AI English Speaking Partner
Learning English is one thing. Actually speaking it out loud, without freezing up, is another. That's where Crow Sentinel comes in.
It's an AI tutor built for one job: getting you comfortable speaking and listening in English, at your own level, whenever you want to practice. No scheduling, no waiting. Just open it up and start talking.
Crow Sentinel adjusts from A1 beginner to C1 advanced. It listens, responds, corrects you gently, and keeps the conversation going. Available any time you want to practice.
It's the practice most students never get enough of, now available whenever you want it.
Your Path from A1 to C1
Each level unlocks new abilities and a new certificate.
Find out exactly where your English stands and what it takes to work in tech.
Free 10-min test · No credit card · Instant CEFR level report
What Separates People Who Build in English from Those Who Almost Do
The four things Crow English does that apps and standard tutors simply can't.
The English tech actually uses
Not grammar worksheets. Pitching, presenting, debating, and explaining your thinking. These are the skills that get you hired, funded, or admitted.
Practice that actually listens
Sentinel listens to every word and responds in real time. No hiding, no waiting your turn. You speak the whole time, every time, and get instant feedback.
Built for technical English
Sentinel is tuned for the vocabulary and scenarios STEM students actually need: pitching, presenting, debating, and explaining your work.
Classmates from 20+ countries
Students from Vietnam, Korea, Brazil, India, and Morocco learn together. Working across cultures in English is a skill you'll use every day in tech.
Why Crow English Beats Duolingo and Tutors
If the goal is to work in tech in English, here's why nothing else gets you there.
| Feature | Crow English | Apps (Duolingo) | Mass Platforms | Private Tutor |
|---|---|---|---|---|
| Technical STEM vocabulary | ✓ | ✕ | ✕ | Varies |
| Pitch and presentation coaching | ✓ | ✕ | ✕ | Varies |
| CEFR certificates | ✓ | ✕ | Sometimes | ✓ |
| AI speaking practice 24/7 | ✓ | ✕ | ✕ | ✕ |
| Weekly parent reports | ✓ | ✕ | ✕ | ✕ |
| Starting price | $10/mo | Free / $7 | $15–25/mo | $40–80/hr |
Crow English Standard starts at $10/month. Cancel anytime.
Two ways to learn Crow English
The same AI-driven English curriculum, delivered two ways. Choose the path that fits your situation.
For Schools and Academies
Crow English is delivered through partner schools and academies that manage enrollment, pacing, and oversight for their students. Pricing depends on cohort size and program structure.
Contact for pricing
Talk to usFor Individual Students
Learn directly with the AI tutor. Practice speaking and listening, progress through CEFR levels, and earn a certificate at each level.
Cancel anytime
Have an access code?
Unlock Crow Sentinel speaking and listening practice.
Sign in first, then enter your code to unlock Sentinel speaking practice.
TOEFL & IELTS: the test between you
and your US university offer letter.
Most US universities require TOEFL 80–100+. Our test prep programs are built to move your score fast.
Used for UK, Australian, and most Asian university admissions.
Common in Vietnam, South Asia, UK & Australia admissions
Used for US and Canadian university admissions.
Common in Korea, China, and US/Canada admissions
Frequently Asked Questions
Who is this for?▼
Students, developers, founders, and engineers who need to communicate in English at work: pitching, presenting, writing, or leading a team. All CEFR levels welcome, from complete beginner (A1) to near-fluent (C1).
How does the placement test work?▼
A free 10-minute test covers reading, listening, grammar, and speaking confidence. Our AI places you at the right CEFR level (A1 to C1) instantly.
Is this really focused on speaking?▼
Yes. Speaking is the core of every class. Pitches, presentations, technical discussions, and roleplay scenarios are how you learn. Grammar and writing support your speaking, they don't replace it.
What's Crow Sentinel and how does it help?▼
Crow Sentinel is the AI tutor you use between sessions, available 24/7. It listens to you speak, gives instant feedback on pronunciation and grammar, and runs you through real technical scenarios: pitch practice, vocabulary drills, interview prep. Use it as often as you want.
How often can I practice speaking?▼
As often as you want. Sentinel is available 24/7. Open it up and start talking. No scheduling, no waiting, no limit.
What are the CEFR certificates?▼
When you complete a level (A1 through C1), you earn an internationally recognized CEFR certificate. Accepted by universities and employers worldwide.
Do parents get progress updates?▼
For learners under 18, parents receive a weekly email covering attendance, skills progress, and what to focus on next.
Can I cancel?▼
Cancel anytime. No contracts. Monthly plans keep access until the billing period ends. Annual plans are fully refundable in the first 7 days.
The technical English
you've been putting off.
Take the free placement test. Get your exact CEFR level. Start speaking technical English today.
Start Free Placement TestFree · No credit card · CEFR level result in 10 minutes