# App Block, Study: LockChest — Take back stolen focus & time

> Digital detox app to block distracting apps and websites for improved focus. (iPhone/iPad app by Gridus Co..)

- Source: https://appshunter.io/ios/app/app-block-study-lockchest/id6477859494 (this page in markdown: same URL + `.md`)
- Developer: [Gridus Co.](https://appshunter.io/developer/1636121761)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Rating: 4.60/5 from 25 App Store ratings · 79 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 16 MB
- Languages: Korean, Russian, Vietnamese, European Spanish, American English, Indonesian, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2024-05-01
- Data updated: 2026-08-31
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/app-block-study-lockchest/id6477859494/reviews.md

## What is App Block, Study?

[Digital Detox, Made Easier]
Spending all day glued to your phone?
Block distracting apps and websites, and focus on what really matters!

[Three Powerful Modes]
● Timer: Block instantly for as long as you choose
● Schedule: Automatically block during work, sleep, or other times you need
● Limit: Set daily usage limits

[Privacy First]
We use Apple’s secure Screen Time technology.
Your data is stored only on your device, and it disappears when you delete the LockChest app.

Download LockChest and reclaim your time from the screen.
We support your healthy digital lifestyle!

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

## Key features

- Block distracting apps and websites
- Instant blocking timer
- Scheduled app blocking
- Daily usage limits
- Privacy-focused data storage
- Utilizes Screen Time technology

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Annual Plan | $12.99 | per year |
| Monthly Plan | $1.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Plan | $39.99 | one-time |


## Recent user reviews (10 of 79)

All indexed reviews: https://appshunter.io/ios/app/app-block-study-lockchest/id6477859494/reviews.md

### 5/5 — 앱 정말 좋아요 근데!!!

*2026-08-25*

개발자님 무슨 마술사마냥 요리저리 꼼수 다 차단해놓으신 게 꼼수대마왕인 제가 손바닥 위에 있는 것 같네요 비슷한 앱 결제해보고 다 뚫려서 몇 개를 갈아치우다가 드디어 정착했어요 바로 결제했답니다 근데!!!! 한가지 오류가 있는 것 같아서 해결해주실 수 있을까 싶어 남겨봐요 제한시간 한도 도달했을 때 앱 목록을 지우는 건 안 되어도 추가는 가능한 거죠? 그래서 추가하려고 앱 선택하니까 체크박스가 활성화되어있지 않더라구요 ㅠㅠ 맨 위에 모든앱선택 누르면 체크표시가 가능하던데 저는 특정앱만 추가하고 싶은데 이건 안되나요? 그리고 앱 추가할 때 검색기능 있으면 좋을 것 같아요! 감사합니다

**Developer response:** ㅋㅋㅋㅋㅋㅋ 꼼수 다 들키셨습니다..!

원래라면 앱을 추가하면 문제없이 완료 버튼이 활성화되어야 해요. 

어떤 상황이신지 스크린샷을 찍어 seodam@gridus.net으로 보내주시면 좀 더 꼼꼼히 도와드리겠습니다!

### 5/5 — 要望

*2026-08-11*

とても便利です！！
他のスマホと連携して欲しいです。両方のスマホの使用時間を合わせて両方で制限できるようにして欲しいです。

**Developer response:** こんにちは :)

リモートで他の端末のブロックを実行する機能は、現時点では実装が難しい状況です。Apple側が関連機能を許可してくれるようであれば、導入を検討してみます。ご意見ありがとうございます。素敵な一日をお過ごしください！

### 5/5 — 어플 잘 사용하고 있습니당

*2026-07-30*

예약에서 지정한 사이트만 허용하고 다른 사이트랑 앱은 다 차단되는 기능이 있으면 더 좋을 것 같아용

**Developer response:** 안녕하세요. 의견 감사합니다. 화이트리스트 차단 기능도 구상해볼게요!

### 4/5 — Good

*2026-07-10*

App is good. But when you get the notification of the locked app and it opens when you tap on it. I think this bug needs to be fixed.

**Developer response:** Hi! Thanks so much for the kind words and for reporting this. 😊

What you're describing actually means the block wasn't active at that moment — when an app is properly blocked, its notifications don't come through at all.

This can occasionally happen when iOS drops the restriction in the background. The good news: simply opening LockChest once will re-apply the block and fix it right away.

If it keeps happening after that, please let me know — I'd be happy to dig deeper. Thanks again for helping make LockChest better!

### 5/5 — 星5です。

*2026-07-03*

操作間違えちゃいました。ちゃんとブロックしてくれます。

**Developer response:** こんにちは。

設定の段階で誤りがありましたが、現在は修正されたようですね。

App Storeで星5つに評価を変更することができます。

ありがとうございます。良い一日をお過ごしください！

### 3/5 — 良い

*2026-06-06*

とてもいいアプリだが、制限が多いのがもったいない

**Developer response:** 一人開発者ですので、生計を立てるためにメンバーシップがどうしても必要であることを、何卒ご理解いただけますようお願い申し上げます！

### 5/5 — スマホ断ち強制力最強

*2026-05-27*

一回ロックされるとどうしようもなくなるので、スクリーンロックの「制限を無視」をタップしてしまう人間は絶対入れましょう。ユーザーが増えて収益上げてほしいのでレビューしました。

**Developer response:** いつもご利用いただきありがとうございます。🙂

温かいレビューをいただき、大変嬉しく思います。スクリーンタイムの「制限を無視」してしまう方にこそ効果的だというご感想、開発の励みになります。

引き続きよりよいアプリを目指して参りますので、これからもよろしくお願いいたします。良い一日をお過ごしください 😌

### 5/5 — 앱 목록이 안 보여요..!

*2026-05-22*

안녕하세요, 앱 잘 쓰고 있습니다! 아이폰에서 쓰다가 좋아서 아이패드에도 설치하려고 하는데요, 폰에서는 예약 걸 앱을 추가할 때 앱을 검색할 수 있어서 금방 찾을 수 있었습니다. 근데 왜인지 패드에서는 앱을 검색할 수가 없게 되어 있어 어쩔 수 없이 모든 분류 항목에 들어가봐서 찾으려 했는데 몇 번을 찾아봐도 찾으려는 앱이 보이지 않습니다. 이럴 땐 앱을 삭제하고 다시 설치해보라는 안내가 있어서 앱을 지우려 했는데 설상가상으로 폰에서 설정한 “앱 삭제 방지 모드”가 패드에 연동된 건지, 삭제하려면 스크린타임 비번을 입력해야 된다고 뜨더라고요.. (스크린 타임 비번을 다른 사람한테 부탁해놔서 모르는 상태입니다) 이럴 땐 어떻게 해야 하나요?? (찾고 싶은 앱은 safari입니다.) 
감사합니다.

**Developer response:** 안녕하세요. 앱을 사용해주셔서 감사합니다 🙂

걱정 안 하셔도 돼요! 수험 생활이 끝나고 댓글 또는 메일을 남겨주시면 해제 방법을 조용히 알려드릴게요.

편안한 하루 보내세요 😌

### 5/5 — 사이트 차단되는게 너무 좋아요

*2026-05-20*

내 나약한 의지를 강제로 잡아주는 어플 진작 사용할걸ㅜ

**Developer response:** 안녕하세요. 따뜻한 리뷰 감사합니다! 앞으로도 더 멋진 앱으로 만들어 나갈게요 😊

### 4/5 — 素晴らしいけど…

*2026-05-19*

ダラダラとスマホを触ってしまうので思い切って購入。他の方も書いてあるが、抜け道がないので諦めてw作業に集中できます。
できればブロックを細く設定したいです。2つしか登録できないのはしんどいです。

**Developer response:** こんにちは。LockChestをご利用いただき、ありがとうございます。

アプリ登録が2つまでの点、ご不便をおかけして申し訳ありません。現状はスクリーンタイムAPIの制約もあり、すぐに増やすのが難しい状況です。

また、開発・運営を続けるため、無料の基本枠を2つ以上に広げるのは難しい判断となっています。

いただいたご要望は今後の検討材料として大切にします。レビューありがとうございました。

## Frequently asked questions about App Block, Study

### What does LockChest do?

LockChest is a digital detox app designed to help you reclaim your time from excessive screen use. It allows you to block distracting applications and websites, promoting better focus and a healthier digital lifestyle.

### What are the main features of LockChest?

The app offers three powerful modes: a Timer for instant blocking, a Schedule for automatic blocking during specific times, and a Limit feature to set daily usage restrictions. It also prioritizes privacy by using Apple's Screen Time technology and storing data only on your device.

### Is LockChest free to use?

The application is free to download and use, with in-app purchases available for additional features or advanced functionality. Specific pricing details for in-app purchases can be found within the app itself.

### What devices is LockChest compatible with?

LockChest utilizes Apple's Screen Time technology, indicating it is designed for iOS devices. Compatibility details, including specific iOS versions, are typically available on the app's store page.

### How can LockChest help me be more productive?

By blocking apps and websites that commonly cause distractions, LockChest helps you minimize interruptions and stay focused on your tasks. The scheduling and limiting features allow you to create dedicated periods for work or study without digital interference.

## Version history (last 5 releases)

### 1.6.0 — 2026-08-27

Improvements to the membership page.

### 1.5.57 — 2026-08-21

■ Fixed an issue where blocking could come undone entirely when a lot of apps were selected.

### 1.5.56 — 2026-08-14

■ You can now add up to four time sections to a schedule and a limit

### 1.5.55 — 2026-08-07

■ You can now load your recent app and website settings with a Membership
■ Fixed an issue where today's usage time showed 0m

### 1.5.54 — 2026-07-31

Stability and performance improvements.
Thank you for using LockChest.

## Apps similar to App Block, Study

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Freedom: Screen Time Control](https://appshunter.io/ios/app/freedom-screen-time-control/id1269788228) | 4.4 (5,715) | Free | Productivity |
| [one sec \| screen time + focus](https://appshunter.io/ios/app/one-sec-screen-time-plus-focus/id1532875441) | 4.8 (23,440) | Free | Productivity |
| [Screen Time Limit: App Blocker](https://appshunter.io/ios/app/screen-time-limit-app-blocker/id6449219142) | 4.5 (43) | Free | Productivity |
| [BlockSite: Block Apps & Focus](https://appshunter.io/ios/app/blocksite-block-apps-and-focus/id1474967653) | 4.2 (6,173) | Free | Productivity |
| [Opal: Screen Time Control](https://appshunter.io/ios/app/opal-screen-time-control/id1497465230) | 4.7 (86,907) | Free | Productivity |
| [AppBlock: Block Apps & Website](https://appshunter.io/ios/app/appblock-block-apps-and-website/id1515753232) | 4.6 (6,479) | Free | Productivity |

## More apps by Gridus Co.

- [회고 노트](https://appshunter.io/ios/app/id1636183919)
- [Lock Screen Calendar: CoreTask](https://appshunter.io/ios/app/lock-screen-calendar-coretask/id6478839577)
- [Parit](https://appshunter.io/ios/app/parit/id6757261487)
- [Chagok: Learn Any Language](https://appshunter.io/ios/app/chagok-learn-any-language/id6757460936)
- [Yonder: Place Albums](https://appshunter.io/ios/app/yonder-place-albums/id6757694304)

All apps by Gridus Co.: https://appshunter.io/developer/1636121761

---

*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 2026-08-31.*