TST Prep
TST Prep is a web platform for preparing for the TOEFL iBT and Duolingo English Test.
What TST Prep is
TST Prep is a web platform for preparing for the TOEFL iBT and Duolingo English Test. Its materials include interactive lessons, video instruction, mock tests, practice questions, downloadable PDFs, sample answers, speaking practice, writing feedback, and a study plan. A free practice account includes free materials and mock tests, including a complete TOEFL practice test, video lessons, PDFs, and interactive exercises. The company describes its approach as combining AI-powered feedback with human support. Paid choices include one-time writing evaluations at $27, paid once, speaking evaluations at $29, paid once, and courses or classes billed annually. The Complete Test Pack costs $89 a year, while The Score Builder Program costs $197 a year. Courses provide one year of access, with no subscription plan. All courses have a 7-day money back guarantee, and students can email TOEFL experts for responses within 24 hours. TST Prep says it does not guarantee scores and is not endorsed by ETS or Duolingo, Inc.
Good
- Free practice account available
- Covers two listed English exams
- Includes mock tests and study plan
- Offers speaking and writing feedback
- One-year course access
Watch out
- No subscription plan
- Courses do not guarantee scores
- Not endorsed by ETS or Duolingo
Who it suits
TST Prep suits students preparing for the TOEFL iBT or Duolingo English Test. It fits learners seeking self-study materials, evaluations, classes, or private teacher support on the web.
Verdict
TST Prep offers free and paid web preparation resources spanning practice tests, lessons, evaluations, and classes. Its one-year access model, 7-day course guarantee, and explicit lack of score guarantee clarify what learners receive.
Plans and prices
From TST Prep's own pricing page, checked 9 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Writing Evaluations | $27, paid once | Teacher evaluates written essays · starting at $27.00 |
| TOEFL Trial Lesson | $29, paid once | Meet with an experienced TOEFL teacher · $29.00 |
| Speaking Evaluation | $29, paid once | Learn speaking strengths and weaknesses · $29.00 |
| The Emergency Course | $37 a year | 2/8 complete practice tests · 200+ reading and listening questions · 6.5 hours of video lectures · unlimited email support · $37.00 for 1 year |
| Complete Test Pack | $89 a year | 20 complete tests for interactive practice · $89.00 for 1 year |
| The Score Builder Program | $197 a year | 20 complete practice tests · 20+ hour course · 120+ hours of practice · unlimited email support · Facebook group access · $197.00 for 1 year |
| Speaking Group Classes | $247 a year | 6 group sessions · 200+ activities · 20 speaking practice tests · next group start to be announced · $247.00 for 1 year |
| Reading Group Classes | $247 a year | 6 group sessions · 200+ activities · 20 reading practice tests · next group start to be announced · $247.00 for 1 year |
| Writing Group Classes | $247 a year | 6 group sessions · 200+ activities · 20 writing practice tests · next group start to be announced · $247.00 for 1 year |
| Private Lessons with a Teacher | $397 a year | 6/10/18 lessons · personalized writing or speaking feedback · monthly coaching calls · unlimited email support · starting at $397.00 for 1 year |
The facts
Each one read from TST Prep's own pages, with the date it was checked.
What it does
- Access period
- Courses include one year of access, and the site says there is no subscription plan.checked 9 Oct 2026
- AI feedback
- The company says its learning approach includes AI-powered feedback and human-powered support.checked 9 Oct 2026
- Integrations
- The free resources page links to video lessons hosted on YouTube.checked 9 Oct 2026
- Intended users
- TST Prep describes its platform as serving students preparing for the TOEFL or Duolingo English Test and seeking to improve English fluency.checked 9 Oct 2026
- Learning format
- The platform offers interactive online learning, video lessons, mock tests, practice questions, downloadable PDFs, sample answers, and writing evaluations.checked 9 Oct 2026
- No score guarantee
- TST Prep says it does not guarantee test scores.checked 9 Oct 2026
- Refund policy
- The site states that all courses have a 7-day money back guarantee.checked 9 Oct 2026
- Security and privacy
- The site says it uses cookies for preferences and analytics tools that collect anonymous information such as visitor counts and popular pages.checked 9 Oct 2026
- Support
- The site says students can email TOEFL experts and expect a response within 24 hours.checked 9 Oct 2026
- Teacher access
- The site offers private classes, flexible schedules, and one-year access.checked 9 Oct 2026
- What it does
- TST Prep provides online courses and practice materials for TOEFL and Duolingo English Tests.checked 9 Oct 2026
The company
- Company founding
- The company says a small team of educators launched TST Prep in January 2019.checked 9 Oct 2026
- Founded
- 2019checked 28 Sep 2026
- Not affiliated with test owners
- The site states its product is not endorsed or approved by ETS or Duolingo, Inc.checked 9 Oct 2026
Money
- Free resources
- A free practice account provides access to free materials and mock tests, including a complete TOEFL practice test, video lessons, PDFs, and interactive practice.checked 9 Oct 2026
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