KLOCK vs Rock Lock
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
KLOCK
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When you need to focus, choose KLOCK. Keep reaching for your phone when youβre supposed to be studying? Itβs time to really lock in. Key Features AI Focus Care If you get distracted while studying, AI catches it instantly. It smartly checks whether youβre actually focused, so your study flow doesnβt get interrupted. Timelapse That Records Your Effort Your study sessions are automatically recorded and turned into clean, shareable timelapse videos. Seeing how long you truly stayed focused naturally boosts your motivation. 25 Minutes On β Real Breaks Focus for 25 minutes and break time is automatically earned. Go hard when you study, fully relax when you rest. Clean Design + Dark Mode A sleek, distraction-free interface. Just having it open makes you feel more focused. Start today with Clark and turn your study time into real, intentional time. When you track it, it changes. Focus becomes a habit.
Rock Lock
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Rock Lock helps you lock your apps so you can actually focus. Set a duration, choose which apps to block, and Rock Lock takes care of the rest. LOCK IN A TAP Pick your apps and a duration, then hit Lock Now. Rock Lock uses Apple's Screen Time technology to block your selected apps instantly. Selected apps stay blocked until your session ends. BLOCK EVERYTHING OR JUST THE BAD STUFF Toggle "Lock all apps" to block every app at once, or hand-pick exactly which apps and categories get blocked during your session. You decide how strict to be. LIVE ACTIVITY WIDGET See your remaining focus time right on your Dynamic Island or Lock Screen - no need to open the app. Your countdown is always visible, always ticking. SCHEDULED SESSIONS Set recurring lock sessions that fire automatically - block social media every morning, or lock down every evening after dinner. Rock Lock runs even when you forget. SESSION HISTORY Every completed session is logged so you can see exactly how much distraction-free time you've earned. See your focus minutes add up over time. NO ADS. PRIVATE BY DESIGN. Rock Lock doesn't analyze your app usage or show ads. Your app selections and session history stay on your device. What you lock is your business.
Screenshots
Verdict
The clearest difference is in-app purchases: KLOCK at none against Rock Lock's 2. KLOCK also leads on update cadence (daily vs fortnightly) and iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Rock Lock sells 1 one-off in-app purchase. KLOCK asks for nothing beyond the download.
KLOCK ships an update daily, Rock Lock fortnightly. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.
| Parameter | KLOCK | Rock Lock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily β better | Fortnightly |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod β better | iPhone |
| Requires iOS | 15.6 β better | 17.0 |
| Further details β not scored | ||
| Size | 102 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Chanwoo Seong | Ron Yahav |
In-app purchases
KLOCK
No in-app purchases
Rock Lock
- Rock Lock Pro2 variants$2.99









