Perfect Lock vs Deep Dive
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Perfect Lock
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Take your life back. The average person spends years of their remaining life staring at a screen. Perfect Lock shows you that number—and gives you the tools to shrink it. Most screen time apps are easy to ignore. Hit the limit, tap "ignore," extend the timer, and you're right back where you started. Perfect Lock is different. When you hit your limit, the app locks—and it stays locked. No loopholes When you reach your daily limit, that app is blocked for the rest of the day. You can't sneak back in by changing settings, deleting the limit, or turning the feature off. Try to edit it and you'll see "Can't change this today." Limits reset tomorrow—not the moment they get inconvenient. That's discipline that actually works. See the real cost Enter your age and daily usage, and Perfect Lock predicts how many years of your life you'll spend in front of a screen. For most of us, that's the wake-up call we needed. Powerful app limits Pick the apps that drain your time and set a daily cap. Go over it and the app locks automatically—even with Perfect Lock closed. It uses Apple's Screen Time framework to enforce limits reliably in the background. Focus Mode Start a focus session and every app goes dark until the timer ends. Only by finishing the session do you truly reclaim that time—no shortcuts, no quitting early without giving up the reward. Track the time you reclaim - Build a streak for every day you stay under your limits - Watch your total reclaimed time grow - See your last 7 days at a glance Time is the one thing you can't buy back. Perfect Lock helps you stop wasting it. Free and Pro Perfect Lock is free to limit one app. Upgrade to Pro to lock unlimited apps and categories at once. Pro is an auto-renewing subscription. Payment is charged to your Apple Account. It renews automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Deep Dive
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集中した時間の長さが、そのまま潜水艦の到達深度になります。 25分の集中で水深450m。90分なら1500m。深く潜るほど暗くなり、そこにしかいない深海生物と出会えます。集中を中断してアプリを離れると緊急浮上となり、その航海で捕らえた生物はすべて失われます。 実在の深海生物101種 マリアナ海溝の底に暮らすカイコウオオソコエビ、体長比で全魚類最大の牙を持つオニキンメ、鯨の骨だけを食べるホネクイハナムシ。すべて実在の生物で、それぞれに解説がついています。捕らえた生物は剥製として図鑑に収めるか、水槽で泳がせるか、港で売るかを選べます。 潜れる深さは、二つの要素で決まります コインで買える潜水艦の耐圧殻と、航海の回数だけで伸びる乗組員の胆力です。お金では買えない成長があります。海溝の最深部、チャレンジャー海淵の11,034mに到達するには、たくさんの航海が必要です。 集中のための音 低い環境音が途切れずに流れ、その上に泡の音がときどき乗ります。数分に一度、遠くで鯨が鳴きます。長時間かけっぱなしにする前提で設計してあり、耳が疲れる純音を含みません。周囲の物音を覆い隠す働きが期待できます。モノラルビートを含みますが、脳波への作用を主張するものではありません。 設定でオンオフが可能です。 ### そのほか - 5分から24時間まで、5分単位で設定できます - 電話や通知で一瞬離れても、90秒以内に戻れば航海は続きます - 潜った深さの累計を、東京スカイツリー何個分といった単位で表示します - 通信を行いません。データは端末内にのみ保存されます - 広告はありません --- 集中の深さを、水深で測る。
Screenshots
Verdict
The clearest difference is in-app purchases: Deep Dive at none against Perfect Lock's 2. Deep Dive also leads on iOS requirement (16.4 vs 18.4). On price, ads and device support 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
Both are free to download. Perfect Lock sells 2 in-app purchases, starting at $1.99 per month. Deep Dive asks for nothing beyond the download.
| Parameter | Perfect Lock | Deep Dive |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 5 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone | iPhone |
| Requires iOS | 18.4 | 16.4 — better |
| Further details — not scored | ||
| Size | 12 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | yunosuke yata | YUTO DOI |
In-app purchases
Perfect Lock
- Perfect Lock7 Days trial$1.991 Month
- Perfect Lock$29.991 Year
Deep Dive
No in-app purchases









