# Melatonin: Sleep & App Blocker — Lock your phone before bed

> Phone lock app to improve sleep hygiene and reduce screen time before bed. (iPhone/iPad app by hyeongjin lee.)

- Source: https://appshunter.io/ios/app/melatonin-sleep-and-app-blocker/id6811927907 (this page in markdown: same URL + `.md`)
- Developer: [hyeongjin lee](https://appshunter.io/developer/6811927909)
- Category: Health & Fitness, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 58 MB
- Languages: Korean, American English, Japanese
- Released: 2026-09-16
- Data updated: 2026-11-06
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/melatonin-sleep-and-app-blocker/id6811927907/reviews.md

## What is Melatonin?

"Just one more video" turns into 2 a.m. At two hours a night, that's six years of your life in bed on your phone by 80. Time to get them back.

Melatonin locks your phone at bedtime, keeps it locked until morning, and shows you what last night did for you.

Your phone locks at bedtime. Every night.
Mornings unlock with sunlight, not willpower.

WHAT IT DOES

- Night Lock: At your set time, every app except Phone and Messages locks until morning. No switch to flip at 2 a.m.
- Strict Mode (Pro): No breaks, and the app can't be deleted while it's locked. The only way out is morning.
- Sunlight Lock (Pro): Pick a time in the day. Your apps lock, and they open only when you step outside and show the sky. Ten minutes of daylight helps you fall asleep faster that night.
- Sleep Score: Total sleep, bedtime consistency, and your morning routine, in one number every morning. Works with Apple Watch, or with your iPhone alone.
- Sleep Debt: How many hours you're short over the last two weeks, and when to go to bed tonight to pay it back.
- Sleep Receipt: What those missed hours cost you, in dollars, at your own hourly rate.
- Lock Impact: Your sleep on nights you kept the lock vs. nights you took a break. Real numbers, not pep talks.
- Night Sky: Every day you open Melatonin counts. The days add up from space dust to the Moon, Mars, Saturn, and on day 180, the Sun. When a new one unlocks, you tap the dust on your first screen to break it open.
- Morning Insight: One notification a day on what your brain did while you slept. Plain English, 30 seconds.

YOU DECIDE WHAT LOCKS

Breaks are yours to set: up to 3 a day, 1 to 20 minutes each, and only from inside Melatonin. Add apps that should never lock. Change bedtime any time before it locks. Turn Strict Mode on only when you're ready for it.

PRIVATE & SAFE

Melatonin uses Apple's Screen Time to lock apps. Apple hands us your choices as encrypted tokens, so we can't see which apps you picked. Your sleep data stays on your iPhone unless you sign in to back it up. The sunlight check reads brightness and sky from your camera on the device; no photos are saved or sent. No ads, no tracking.

MELATONIN PRO

Pro adds Strict Mode and Sunlight Lock. Everything else, including Night Lock and your Sleep Score, is free.

Yearly $49.99 with a 7-day free trial, or $9.99 a month. Payment is charged to your Apple Account at confirmation of purchase, or when the free trial ends. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel in Settings > Apple Account > Subscriptions.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://gentleman-kr.github.io/melatonin/privacy-en.html

## Key features

- Nightly phone lock
- Strict mode for no breaks
- Sunlight lock feature
- Sleep score and debt tracking
- Sleep cost calculation
- Visual progress tracking

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| 멜라토닌 Pro 연간 | $49.99 | per year |
| 멜라토닌 Pro 월간 | $9.99 | per month |


## Is Melatonin safe?

Not enough ratings yet to assess Melatonin.

## Is Melatonin legit?

Melatonin: Sleep & App Blocker has limited verification signals. The AppsHunter Legitimacy Score for Melatonin is 58 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/melatonin-sleep-and-app-blocker/id6811927907/reviews.md

### 5/5 — 도파민 중독 탈출..

*2026-10-09*

쇼츠 보다 맨날 늦게 잤는데 멜리토닌 덕에 이제 일찍 잡니다!

**Developer response:** 앞으로 자기 전 쇼츠 차단에 멜라토닌이 도와드리겠습니다!

### 5/5 — 삶의 질 개선

*2026-10-04*

평소에 자신의 의지를 믿고, 하루를 열심히 살은 나에게 보상개념으로 자기전에 잠깐 킨 핸드폰이 10분 20분 30분이 되며 늦게, 어지러운생각들로 잠들던 일상을 막아주고있는 앱.
잠기면 불안이 느껴지는 내자신이 그동안 어떻게 살아왓는지 되돌아보게됨

**Developer response:** 멜라토닌이 성찰까지 도와준 계기가 되니 제가 더 감사합니다! 앞으로 더 유익한 앱이 되도록 개발하겠습니다!

### 5/5 — 의지박약러 수면 치트키

*2026-10-01*

쇼츠 한두 개만 보고 자야지 했다가 매번 새벽 되는 사람이라 깔았는데 이거 진짜 괜찮아요..
전 pro 쓰는데 워치 없어도 수면 점수랑 패턴을 확인할 수 있는 것도 굿. 아침에 점수 알림 오면 은근 갓생 승부욕 생겨요 수면 루틴 치트키 인정입니다

**Developer response:** 감사합니다:) 수면의 질을 향상시키는 멜라토닌이 되겠습니다!

## Frequently asked questions about Melatonin

### Does Melatonin have ads?

No, Melatonin is ad-free. The app is developed with a focus on user privacy and a distraction-free experience, meaning you won't encounter any advertisements while using it.

### What are the subscription options for Melatonin Pro?

Melatonin Pro offers a monthly subscription for $9.99 with a 3-day free trial, or an annual subscription for $49.99 with a 7-day free trial. These subscriptions unlock advanced features like Strict Mode and Sunlight Lock.

### How does Melatonin lock apps?

Melatonin utilizes Apple's Screen Time functionality to lock apps. It receives encrypted tokens from Screen Time, ensuring that the app developer cannot see which specific apps you have chosen to lock.

### Can I customize which apps are locked by Melatonin?

Yes, you can decide which apps lock and which should always remain accessible. You can also set specific break times or add apps that should never be locked.

### What is the age rating for Melatonin?

Melatonin has an age rating of 4+. This indicates that the content is generally suitable for all ages, with no mature themes or potentially objectionable material.

### How often is Melatonin updated?

The latest version of Melatonin is 1.6.0, which was last updated on November 6, 2026. Updates typically address bug fixes, performance improvements, and new feature additions.

### Does Melatonin integrate with other health devices?

Yes, Melatonin's Sleep Score feature works with Apple Watch or can be used with your iPhone alone. This allows for more comprehensive sleep tracking and analysis.

### How do I cancel my Melatonin Pro subscription?

Subscriptions can be managed or canceled within your iPhone's Settings. Navigate to Settings > Apple Account > Subscriptions to find and manage your active subscriptions.

## Version history (last 5 releases)

### 1.6.0 — 2026-11-06

Melatonin is now in English.

- Night Lock, Sleep Score, Sleep Debt and the Night Sky, all in English
- Times, dates and your hourly rate in U.S. formats
- Sunlight Lock cities across the U.S., Canada, the U.K., Ireland, Australia and New Zealand
- Try Sky Check anytime: Lock tab > Sunlight Lock > Try Sky Check
- The number next to the Sun is your streak. Open Melatonin each day to keep it going
- The Night Sky grows with every day you show up, and a new planet opens right on your first screen
- Start without signing in. The name you give during setup becomes your account name
- Write an App Store review right from My

### 1.5.1 — 2026-11-03

• 알림이 하루 한 번, 아침에만 와요. 어젯밤 뇌가 한 일을 한 줄로 알려드려요.
• 차단 해제를 내게 맞게 정해요. 한 번에 1~20분, 하루 1~3번. 밤 잠금과 일광욕 잠금에서 같이 써요.
• Pro 강화는 원할 때만 켜요.
• 홈의 밤 잠금 · 일광욕 잠금이 한눈에 보이게 바뀌었어요.
• 하늘 인증 화면에 애플 날씨 출처를 표시해요.
• 실행 직후 꺼질 수 있던 문제를 막았어요.

### 1.4.0 — 2026-10-16

• 밤에 차단을 15분씩 세 번 풀 수 있어요. 15분이 지나면 저절로 다시 잠깁니다.
• 워치가 없어도 폰만으로 잔 시간을 재고 점수를 받습니다.
• 라이트 모드가 생겼습니다. 마이 > 설정 > 화면에서 고르세요.
• 처음 쓰는 분을 위한 안내를 새로 만들었습니다.
• 홈·수면기록·하단 바를 다듬었습니다.

### 1.3.5 — 2026-10-07

코칭 방이 더 정확해졌습니다.

· 앱을 열지 않아도 밤 기록이 방 명단에 반영됩니다. 그동안은 본인이 앱을 열어야만 올라가서, 코치 화면이 며칠씩 멈춰 있었습니다.
· 초대 코드로 프로가 열린 분들께 「동작 및 피트니스」 권한을 제때 여쭙도록 고쳤습니다. 워치 없이 재는 기능이 안 켜진 채로 남는 일이 없습니다.

### 1.3.4 — 2026-10-05

■ 로그인이 첫 화면이 됐습니다

기기를 바꾸고 기록을 되찾으시려는 분이 질문 아홉 개를 먼저 지나야 했습니다.
이제 앱을 열면 바로 로그인하실 수 있습니다.

여전히 선택입니다. 같은 화면 아래 「계정 없이 시작하기」로 들어가시면 차단과
수면 점수, 수면 부채가 전부 그대로 동작합니다.

■ 수면 부채가 같은 날 두 숫자로 보이던 문제를 고쳤습니다

건강 앱의 기록이 아직 다 올라오지 않은 동안에는 필요 수면량을 8시간 기본값으로
놓고 계산하고 있었습니다. 세는 밤은 똑같은데 비교 기준만 낮아져서, 부채가 실제의
절반으로 보였다가 잠시 뒤 제값으로 올라갔습니다.

이제 한 번 추정한 필요 수면량을 기억해 두고, 기록을 못 읽는 순간에도 그 값으로
계산합니다.

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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 2026-11-06.*