TST Prep

tstprep.com ↗

English test preparation with TOEFL and Duolingo English Test resources, mock practice and sample responses.

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SI Score: 60/100
Pricing: Not confirmed
Free plan: Yes AI reading, not confirmed
Sign-up required: Not confirmed

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Ask SI about TST Prep

Answers use saved listing facts and recorded sources.

What it does

English test preparation with TOEFL and Duolingo English Test resources, mock practice and sample responses.

TST Prep separates TOEFL and Duolingo English Test courses and materials. A free practice account provides mocks, questions and speaking/writing examples. The homepage labels its free TOEFL practice test for 2026; use a sample to identify the task that needs further study.

Strengths

Sample responses and practice resources support task-level preparation.

Best for

TOEFL and Duolingo English Test learners using samples and mocks

Sources

TST Prep | Get Your Score as Quickly and Easily as Possible (Oct 26, 2026)

SI Score

60/100

#115 in Exam Prep

Based on published information. No hands-on task test.

Method 2.0 · Published source review Assessed Oct 26, 2026Score ceiling for this evidence: 84/100.

Product usefulness 60

Evidence

A free practice account leads to task samples and mocks, with TOEFL/DET-specific material and productive-skill examples for concrete comparison practice.

Limits: AI review of saved source passages. No hands-on test, human approval or automatic-provider checker receipt.

Source links and check dates are in Sources and checks below.

Separate website checks

These checks do not add points to the SI Score. They inspect the website's HTML, not the product in use.

Basic website checksunknown

No check recorded.

HTML accessibility checksunknown

No check recorded.

Homepage HTML responseunknown

No check recorded.

Trackers in homepage HTMLunknown

No check recorded.

Page date hintsunknown

No check recorded.

Policy links do not verify a company's conduct. An HTML response time is not application speed. Tracker and accessibility checks miss behavior after page load. Copyright dates do not prove product upkeep.

How the SI Score works →

Unconfirmed details may be unassessed, absent from the pages checked or temporarily unreadable. A missing price does not mean the service is free.

Sources and checks

Supporting pages for product usefulness, site facts, prices and separate website checks. Each record keeps its own date. Reading a page does not establish how well the product performs in use.

tstprep.com/
- Free planAI reading, not confirmedChecked Oct 26, 2026
  The official source explicitly provides ongoing free study resources; any paid options have separate scope.
- Product usefulness evidenceChecked Oct 26, 2026

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