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TST Prep
What TST Prep is
TST Prep provides online courses and practice materials for the TOEFL iBT and Duolingo English Test. Its web-based resources include video lessons, mock tests, practice questions, downloadable PDFs, sample answers and writing evaluations, along with speaking practice and a study plan. The company describes its approach as combining AI-powered feedback with human support. A free practice account includes materials and mock tests, including a complete TOEFL practice test, video lessons, PDFs and interactive practice. Paid options range from one-time evaluations to year-long courses and classes. For example, Writing Evaluations start at $27, paid once, the Complete Test Pack costs $89 a year, and The Score Builder Program costs $197 a year. Courses provide one year of access; the site says it has no subscription plan. All courses have a 7-day money back guarantee. Students can email TOEFL experts and expect a response within 24 hours. TST Prep says it does not guarantee test scores and is not endorsed or approved by ETS or Duolingo, Inc.
Who it suits
TST Prep is intended for students preparing for the TOEFL iBT or Duolingo English Test who want practice materials, feedback or teacher access. Its free account offers a way to begin with practice resources.
What it does well
- Free account includes mock tests and study materials.
- Offers practice for TOEFL iBT and Duolingo English Test.
- Writing evaluations and speaking practice are available.
- Courses include one year of access.
- Courses have a 7-day money back guarantee.
What to know first
- The platform does not guarantee test scores.
- It is not endorsed or approved by ETS or Duolingo, Inc.
- Web is the listed platform.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| The Score Builder Program | $197.00 for 1 year · 20 complete practice tests · 20+ hour course · 120+ hours of practice · unlimited email support · Facebook group access | $197 a year |
| Speaking Group Classes | $247.00 for 1 year · 6 group sessions · 200+ activities · 20 speaking practice tests · next group start to be announced | $247 a year |
| Reading Group Classes | $247.00 for 1 year · 6 group sessions · 200+ activities · 20 reading practice tests · next group start to be announced | $247 a year |
| Writing Group Classes | $247.00 for 1 year · 6 group sessions · 200+ activities · 20 writing practice tests · next group start to be announced | $247 a year |
| Writing Evaluations | starting at $27.00 · Teacher evaluates written essays | $27, paid once |
| TOEFL Trial Lesson | $29.00 · Meet with an experienced TOEFL teacher | $29, paid once |
| Speaking Evaluation | $29.00 · Learn speaking strengths and weaknesses | $29, paid once |
| The Emergency Course | $37.00 for 1 year · 2/8 complete practice tests · 200+ reading and listening questions · 6.5 hours of video lectures · unlimited email support | $37 a year |
The first 8 of 10 plans, as tstprep.com lists them, read 9 Oct 2026. The maker's own page has the final word. Every plan
Verdict
TST Prep offers free practice materials alongside paid evaluations, courses and classes for two English-language tests. Its stated limits include no score guarantee and no endorsement by either test owner.
Facts from TST Prep's own pages
- Access period
- Courses include one year of access, and the site says there is no subscription plan. · tstprep.com, 9 Oct 2026
- AI feedback
- The company says its learning approach includes AI-powered feedback and human-powered support. · tstprep.com, 9 Oct 2026
- Company founding
- The company says a small team of educators launched TST Prep in January 2019. · tstprep.com, 9 Oct 2026
- Founded
- 2019 · tstprep.com, 28 Sept 2026
- 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. · tstprep.com, 9 Oct 2026
- Integrations
- The free resources page links to video lessons hosted on YouTube. · tstprep.com, 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. · tstprep.com, 9 Oct 2026
- Learning format
- The platform offers interactive online learning, video lessons, mock tests, practice questions, downloadable PDFs, sample answers, and writing evaluations. · tstprep.com, 9 Oct 2026
- No score guarantee
- TST Prep says it does not guarantee test scores. · tstprep.com, 9 Oct 2026
- Not affiliated with test owners
- The site states its product is not endorsed or approved by ETS or Duolingo, Inc. · tstprep.com, 9 Oct 2026
- Refund policy
- The site states that all courses have a 7-day money back guarantee. · tstprep.com, 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. · tstprep.com, 9 Oct 2026
- Support
- The site says students can email TOEFL experts and expect a response within 24 hours. · tstprep.com, 9 Oct 2026
- Teacher access
- The site offers private classes, flexible schedules, and one-year access. · tstprep.com, 9 Oct 2026
- What it does
- TST Prep provides online courses and practice materials for TOEFL and Duolingo English Tests. · tstprep.com, 9 Oct 2026
Where TST Prep stands on Freedom251
- Language Test Prep Apps#27 of 37