Comparison

睡眠ドッグ vs Good Night Lock(screen time)

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Good Night Lock(screen time)

Lock apps easily for sleep

Free

🌟 Lifestyle

★ 5.03 ratingsView app →

About

睡眠ドッグ

Features

Read full description

ドッグを育てながら、睡眠時間にスマホをロックするアプリです。iOSのスクリーンタイムを利用して使用できるアプリを制限します。

About

Good Night Lock(screen time)

This app helps users establish healthier sleep routines by locking distracting applications during designated sleep hours. It allows for easy setup of bedtime and wake-up times, ensuring only essential apps remain accessible to promote better sleep quality.

Highlights

Set bedtime and wake-up times
Lock non-essential apps
Utilizes Screen Time permissions
Reduce screen time
Improve sleep quality
Easy setup

Features

Read full description

Good Night Lock helps you improve sleep habits. - Easy setup: Simply set your bedtime and wake-up time. - Lock apps: it locks all apps except essential ones like Phone and Clock during your sleep hours using Screen Time permissions. - Effective usage control: Reduce screen time and improve your sleep quality. Prepare for a better tomorrow with Good Night Lock! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy : https://www.goodnightlock.com/privacy-policy/good-night-lock

Screenshots

睡眠ドッグ2 screens

Good Night Lock(screen time)4 screens

Verdict

The call

The clearest difference is in-app purchases: 睡眠ドッグ at none against Good Night Lock(screen time)'s 2. 睡眠ドッグ also leads on update cadence (every 2 weeks vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Good Night Lock(screen time) sells 2 in-app purchases, starting at $4.99 per month. 睡眠ドッグ asks for nothing beyond the download.

UpkeepUpdate frequency

睡眠ドッグ ships an update every 2 weeks, Good Night Lock(screen time) monthly. Both last shipped on November 4, 2026.

Scorecard2 real differences · 8 level

睡眠ドッグ versus Good Night Lock(screen time): the parameters behind the verdict, then further details
Parameter	睡眠ドッグ	Good Night Lock(screen time)
Price	Free	Free
Rating	—	5.0 (3 ratings) — better
Positive reviews	—	100.0% of reviews
Number of ratings	—	3 — better
Update frequency	Every 2 weeks — better	Monthly
Ads	No	No
In-app purchases	No — better	Yes
Monetization	—	Freemium
Devices	iPhone	iPhone, iPad — better
Requires iOS	17.0	16.0 — better
Further details — not scored
Size	9 MB	10 MB
Age rating	9+	4+
Developer	Hayato Kitaoka	Byunghoon Kang

In-app purchases

None

睡眠ドッグ

No in-app purchases

2 purchases

Good Night Lock(screen time)

Subscriptions2

Monthly7 Days trial$4.991 Month
Yearly7 Days trial$35.991 Year

Questions

Is 睡眠ドッグ free?

睡眠ドッグ is free to download, with no in-app purchases.

Is Good Night Lock(screen time) free?

Good Night Lock(screen time) is free to download, with in-app purchases available.

Do 睡眠ドッグ or Good Night Lock(screen time) have ads?

Neither 睡眠ドッグ nor Good Night Lock(screen time) shows ads.

Which is updated more often, 睡眠ドッグ or Good Night Lock(screen time)?

睡眠ドッグ ships an update every 2 weeks, and Good Night Lock(screen time) monthly. Most recently, 睡眠ドッグ was updated on November 4, 2026 and Good Night Lock(screen time) on November 4, 2026.