TOEFL Vocabulary for iOS

The TOEFL vocab app that
blocks TikTok & Instagram until you study.

1,000 words. Illustrated flashcards. Three vocab games. Spaced repetition. And the only app that turns your phone against your worst habits.

Start Your Free Trial
7 days free · $39.99/yr · Cancel anytime
1,000 curated TOEFL words
3 vocabulary games
67 days to full mastery
96× daily passive exposures
Now Live on iOS

Open TikTok?
Not until you study.

PrepLockin uses Apple’s official Screen Time API to block any app you choose. When you try to open it, a TOEFL vocab quiz appears instead. Answer 5 questions. 90 seconds. Then scroll guilt-free.

  • You pick which apps to block
  • Uses Apple’s FamilyControls — not a hack
  • Your data never leaves your device
  • 5 questions, ~90 seconds to unlock
PrepLockin shield screen

TOEFL Study Blocks

1

Academic Reading

260 words

2

Listening Comprehension

244 words

3

Speaking & Writing

252 words

4

Scientific Vocabulary

244 words

Explore TOEFL Vocabulary

abolishto formally put an end to something; to eliminate or eradicateSAT · TOEFL · IELTSabolitionThe formal putting an end to a system or practiceTOEFLabsorbTo take in information or facts fullyTOEFLabstainTo deliberately choose not to do or have something; to refrain.GRE · SAT · TOEFLabstractExisting in thought or as an idea but not having a concrete physical existenceGRE · SAT · TOEFL · IELTSabstract nounA noun referring to an idea, concept, or qualityTOEFLabstract thinkingThinking about concepts rather than specific instancesTOEFLabstractionThe quality of existing apart from concrete realityTOEFLacademic integrityThe ethical code governing honesty in academic workTOEFLacademic vocabularyThe words commonly used in academic speech and writingTOEFLaccelerationthe rate of change of velocity; the second derivative of positionSAT · TOEFLaccessibleAble to be reached or used; friendly and easy to talk to.SAT · TOEFL · IELTS
View all 1,000 TOEFL words

Simple pricing.

7 days free. Full access. No feature tiers.

Monthly
$7.99
per month
  • All 1,000 TOEFL words
  • App blocking + widgets
  • 3 games + streaks + heatmap
Start Free Trial
Best value
Annual
$39.99
per year — $3.33/mo
  • Everything in Monthly
  • Save $55.89 vs. monthly
  • Less than one practice test book
Start Free Trial

No charge until Day 8

Questions

Where do the 1,000 TOEFL words come from?
Curated from official ETS materials, academic word lists, and frequency analysis of TOEFL passages. Organized into 4 categories: Academic Reading, Listening Comprehension, Speaking & Writing, and Scientific Vocabulary.
How does app blocking work on iOS?
PrepLockin uses Apple’s official FamilyControls framework — the same Screen Time technology built into every iPhone. You choose which apps to block. When you tap a blocked app, a 5-question vocab quiz appears. Answer correctly and the app unlocks. All data stays on your device.
Is this good for non-native English speakers?
Absolutely. PrepLockin is designed for TOEFL test-takers learning academic English. Every word includes a clear definition, example sentence, and synonyms. The spaced repetition system ensures you retain words long-term.
What happens after the free trial?
Everything is fully unlocked during the 7-day trial. Cancel in iPhone Settings before Day 8 and you pay nothing.

Start today. Master all 1,000 TOEFL words by June 26, 2026.

Your TOEFL is getting closer.
Your vocabulary doesn’t have to fall behind.

Download on the App Store
7 days free · $39.99/yr or $7.99/mo · Cancel anytime