Student satisfaction
99.5%
*In-house survey, July 2021
Would recommend
87.5%
*In-house survey, July 2021
Consultation satisfaction
82.5%
*In-house survey, July 2021
Effective Online English Conversation
CURIOUS WORLD offers one-on-one online English lessons designed for real progress. Beyond daily conversation, we provide classes in business English, IELTS, TOEFL, TOEIC, and other academic goals.
Our flexible booking system lets you reserve your favorite teachers multiple times a day—at no extra cost.
Serious About Learning English? So Are We.
Unlike other services that limit you to one lesson a day,
we let you book multiple lessons daily.
Study with your favorite teachers as often as you like—at no extra cost.
All our teachers are professionals, not amateurs.
From daily conversation to business English, IELTS, TOEFL,
and more—we’ve got you covered.
We believe that motivated learners should have unlimited opportunities to improve.
Get the most out of CURIOUS WORLD.
No credit card required.
No unexpected charges.
Book your free trial lesson today
See a lesson in action
Beginners are welcome!
Our learning advisors have you covered.
Questions?
Reach us anytime on LINE.
What makes us different
Book multiple slots in a row
No daily cap on bookings — reserve as many lessons as you need. Take two in a row or stack lessons on the weekend.
Academic & test prep
IELTS, TOEFL, and other academic tracks. We also coach TOEIC and second-round English interview skills — covering not just speaking, but writing too.
About our Filipino Teachers
English as a second language
English is part of the primary curriculum in the Philippines, so Teachers explain grammar and usage in a clear, structured way. Having learned English themselves, they know where learners stumble and make grammar and pronunciation easy to fix.
Pronunciation
Baguio Teachers switch between everyday Filipino English and clear classroom English so you hear model speech in lessons.
Writing support
We cover writing rare for typical online conversation schools.
Passionate, direct coaching
Many Teachers come from Philippine language schools, so they push hard when they see a faster path forward sometimes it can feel intense.
Because they also learned English as a second language, they emphasize the points you truly cannot skip.
*Ask our official LINE anytime if you want help choosing a Teacher.
No credit card required.
No unexpected charges.
Book your free trial lesson today
Lesson plans
Among the best value we know of (in-house survey)
4 lessons / month
Great if you are busy parents and professionals alike.
Monthly 2,200 JPY
(about 550 JPY per lesson)
10 lessons / month
Build a steady habit without burning out.
Monthly 4,400 JPY
(about 440 JPY per lesson)
Most
popular
popular
20 lessons / month
Our standard bestseller.
Monthly 6,600 JPY
(about 330 JPY per lesson)
30 lessons / month
Maximum value for heavy users.
Monthly 8,800 JPY
(about 293 JPY per lesson)
Add-on pack: 10 lessons 3,300 JPY
Trusted by schools and universities
Shigakukan High School
Osaka Electro-Communication University
Trusted by many more institutions nationwide
Universities (examples)
Oka Gakuen University / Kyoto University of the Arts / Osaka Electro-Communication University / Shizuoka University of Art and Culture / Joshibi University of Art and Design / Kobe Design University / Seika University / Seijo University / Chiba University of Commerce / Tamagawa University / Tama Art University / Chukyo University / Tokai University / Tokyo International University / Tokushima Bunri University / Nagoya University of the Arts / Matsuyama University / Meiji Gakuin University, and others (no particular order)
High schools (examples)
Eiri Girls High School / Kamata Girls High School / Keisei Gakuen Junior & Senior High / Keimei Gakuen Junior & Senior High / Kindai University High School / Sanda Gakuen Junior & Senior High / Shigakukan High School / Shokei Gakuin Junior & Senior High / Daisho Gakuen High School / Honjo Daiichi High School (no particular order)
How it works
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Take your free trial lesson
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Choose a plan & enter your billing details
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Start learning
A learning path for every goal
*Questions about your plan? Message us on the official LINE anytime.
Test prep
TOEIC, TOEFL, IELTS, and more.
First-time test takers welcome.
We can follow your textbooks.
Our Teachers include pros who focused on IELTS and similar exams at overseas language schools.
Ideal if you are aiming at university abroad or permanent residency.
Business English
Role-plays and real-world business scenarios tailored to your role.
We offer materials on management, accounting, and strategy.
Stay consistent even with a busy job.
Hobbies & travel
nglish sounds cool.
I love listening even if I can't speak yet.
I want to talk more with friends abroad.
Any reason to start is a good one.
Let's shape lessons around your personal goals.
Why not begin in your spare time, just for fun
Ask a learning advisor on LINE.
No credit card required.
No unexpected charges.
Book your free trial lesson today
Teacher quality you can feel
Up to three weeks of
rigorous hiring checks
Ongoing training &
lesson research after onboarding
Filipino Teachers who remember struggling with English themselves can spotlight the pitfalls and fixes that matter most.
Feel the difference of true one-to-one lessons!
Teacher Dian
Voices from learners
I.M. (nurse, 30)
I started English because I wanted a working holiday and to work abroad. At first I could barely introduce myself. I was nervous talking with foreigners, but once lessons started my Teacher checked that I understood, explained gently, and used the message box and translation when I got stuck. Speaking slowly felt normal, and class felt more like visiting a friend than studying. Every Teacher is kind and enthusiastic, so I stopped fearing mistakes and just kept talking and it got easier. If you are unsure, try even one lesson.
O.I. (high school student, 18)
English class began in my first year of junior high and everything felt new. I joined online lessons to hear real English. At the start I could barely listen or speak. I was tense, but the 25-minute
format and upbeat Teacher helped me stick with it. Being understood boosted my confidence, and even with grammar slips I keep talking. Teacher are cheerful and follow me even when my English is messy.
It feels amazing when a sentence I built lands. Short daily sessions with a Teacher waiting for me make it sustainable.
/ GTEC score progress from year 1 to year 3 of junior high: actual results shared by this student! /
Start with a free trial
Nothing is charged after the trial unless you continue.
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Free signup
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Book a slot
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