# Sphinx Lock: Vocab App Blocker — Study to unlock your apps

> Study to unlock your apps (iPhone/iPad app by MINHO JO.)

- Source: https://appshunter.io/ios/app/sphinx-lock-vocab-app-blocker/id6766201668 (this page in markdown: same URL + `.md`)
- Developer: [MINHO JO](https://appshunter.io/developer/1823415815)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 45 MB
- Languages: American English, Korean
- Released: 2026-09-16
- Data updated: 2026-09-21
- User reviews in markdown: https://appshunter.io/ios/app/sphinx-lock-vocab-app-blocker/id6766201668/reviews.md

## What is Sphinx Lock?

Open a blocked app and the Sphinx is standing in the doorway. Get the word right and you're through.

- Playtime, priced in words
Fifteen minutes runs you 5 questions, half an hour 10, a full hour 20. Nobody's telling you to stay off your feeds. Clear the words and the app is yours. The time you were going to scroll away, you keep as vocabulary.

- Only the words on your exam
· Japanese — JLPT N5 to N1
· Chinese — HSK 1-6, 7-9
16,748 words, no filler. Every question comes off the exam you're already studying for, so the time you burn getting into an app is time you spent studying.

- Words stick, or they come back
Miss a word once and the price goes up to three in a row, and it keeps turning up until you pay it. Get one twice in a row and it's gone for good, so you'll never grind through words you already know.

- Every escape route, closed
Delete a locked app off your Home Screen and it stays locked. Cap your day, and once the cap is gone, no amount of quizzing gets you in. Tighten a rule whenever you like, but loosening one is once a day, so 2 a.m. can't overrule this morning.

- Learn it in passing
Add the widget and your next word sits on your Home or Lock Screen. No session, no sitting down. You just start knowing them.

If the only way you'll study is being made to, let Sphinx Lock make you.

[Terms of Use]
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro Yearly | $19.99 | per year |



## Version history (last 1 release)

### 1.0.0 — 2026-09-17

No release notes.

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## More apps by MINHO JO

- [밥먹고십분걷기](https://appshunter.io/ios/app/id6747921969)
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- [dateyomi-Master Japanese Dates](https://appshunter.io/ios/app/dateyomi-master-japanese-dates/id6759133325)
- [guico- AI Guitar Chord Trainer](https://appshunter.io/ios/app/guico-ai-guitar-chord-trainer/id6759184000)
- [katayomi - Master Katakana](https://appshunter.io/ios/app/katayomi-master-katakana/id6790161106)

All apps by MINHO JO: https://appshunter.io/developer/1823415815

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-21.*