App Lock vs DKM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
App Lock
Manage your screen time and enhance focus with intelligent app blocking and privacy protection. Create a private digital space, track usage, and set schedules to reduce distractions and build healthier digital habits.
- App blocking for privacy
- Focus management and deep work sessions
- Detailed app usage statistics
- Smart scheduling of app blocking
- System-level protection and control
- Camouflage mode for dual identity
- Privacy protection and data security
Read full descriptionHide full description
App Introduction Invis is a professional digital health app that helps you scientifically manage screen time, enhance focus, and build healthier digital habits. Through intelligent app blocking and privacy protection features, let yourself stay away from digital distractions and focus on what truly matters. Core Features Privacy Protection First - Block apps to protect your privacy, preventing others from peeking at your personal apps - Create an exclusive private digital space just for you - Use your device safely in sensitive situations, avoiding awkwardness - Protect personal data and privacy of your digital life Smart App Blocking - Perform focus management by temporarily blocking distracting apps - Create deep work sessions to significantly improve efficiency - Support for custom app groups (work, entertainment, social, etc.) - Flexible time limits and automatic recovery features Detailed Usage Statistics - Comprehensive app usage data analysis - Daily/weekly/monthly trend charts - Personalized digital health reports - Help understand usage habits and optimize time allocation Smart Scheduling - Automatically block distracting apps at preset times - Set once, execute intelligently - Support for multiple scene modes (work, study, rest) - Flexible time period configuration System-Level Protection - Utilizing iOS native Family Controls framework - Prevent accidental uninstallation of important apps - Restrict in-app purchases, avoiding impulse spending - Complete device management authority, ensuring rule execution Camouflage Mode - Displays as a practical note-taking app - Dual identity switching, safe and convenient - Additional privacy protection when needed Target Audience - Users who want to have privacy space - Users who need to protect their personal digital life - Users who want to reduce mobile phone usage time - Professionals who need to improve work focus - Parents concerned about their children's digital health - Users pursuing digital minimalism - People seeking self-development and healthy habits Why Choose Invis? - Privacy First: Designed with privacy protection focus, creating a safe digital space - Scientific Management: Based on time management psychology - Simple Operation: Intuitive interface, one-click complex configuration - Comprehensive Features: Integrates app blocking, time management, and statistical analysis - Privacy Security: All data processed locally, protecting personal information - Continuous Updates: Regular optimization of user experience, adding new features Premium Benefits - Unlock all advanced features - Unlimited creation of app groups and schedules - Advanced statistical reports - Priority customer support - Complete system protection features Download Invis and start your digital health journey! Let technology serve life, not dominate it.
DKM
Securely manage your device's apps and sensitive documents with multiple password-protected worlds. Protect your privacy when sharing your device or lend it out without compromising your data.
- App management
- Secure document storage
- Multiple password protection
- Create separate password worlds
- Child device management
- Confidential information protection
Read full descriptionHide full description
DKM: Document Keeper Multipass is an application that manages applications on devices and sensitive documents, helping users securely store their documents with multiple passwords. Personal data security is an inevitable need, but what to do when you have to share your device with many people or lend your phone to someone? Don't worry, we will help you with that. The most special feature of the application is that users can create many passwords corresponding to many separate worlds. You can give your password to your lover, children, friends without fear that they know what your correct password is. All information is strictly confidential. With the Applications feature, parents or guardians can manage their children's devices in the most effective way. And many interesting features are waiting for you to discover, download now! Terms and Conditions: https://mituultra.com/dkm/terms-conditions Privacy Policy: https://mituultra.com/dkm/privacy-policy Contact the developer team: support@mituultra.com
Screenshots
Verdict
The clearest difference is ads: App Lock at none against DKM's shown. App Lock also leads on ratings volume (259 vs 6) and rating (4.7 vs 4.5). DKM's advantage is iOS requirement (15.0 vs 17.0). On price, in-app purchases, monetization model 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. App Lock sells 1 one-off in-app purchase and DKM sells 5 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
App Lock holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: App Lock has 259 ratings behind it against 6, so its average is the more settled of the two.
App Lock ships an update weekly, DKM every 2 weeks. The most recent releases landed on September 26, 2026 and September 19, 2026 respectively.
| Parameter | App Lock | DKM |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (259 ratings) — better | 4.5 (6 ratings) |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 259 — better | 6 |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 108 MB |
| Age rating | 4+ | 4+ |
| Developer | 亚娟 秦 | Duyen Tran |
Customer experience
App Lock
DKM
Bugs and requests
App Lock
Reported bugs
11 issues- Apps disappear after hiding
- Apps become unlocked automatically
- White screen/freezing when adding apps
- Subscription billing issues (unexpected charges)
- App crashes/logs out of WhatsApp
Show 6 moreShow fewer
- App location/group transfer issue
- Cannot access hidden apps after deletion
- Password entry keyboard not appearing
- Incompatible with iOS 18
- Intermittent password input box not showing
- Apps are restricted after deletion and reinstallation
Requested features
10 requests- Fix apps disappearing after hiding
- Fix apps unlocking automatically
- Fix white screen/freezing when adding apps
- Address subscription billing and cancellation
- Resolve WhatsApp logout issue
Show 5 moreShow fewer
- Fix app location/group transfer issue
- Enable access to hidden apps after deletion
- Fix password entry keyboard not appearing
- Ensure compatibility with iOS 18
- Fix intermittent password input box not showing
DKM
Not enough reviews yet to summarise bugs or requests.
In-app purchases
App Lock
- Invis Pro Lifetime$2.99
DKM
- Weekly Premium Plus$1.997 Days
- Weekly Premium3 Days trial$3.997 Days
- Monthly Premium7 Days trial$7.991 Month
Show 2 moreShow fewer
- Premium Monthly Plus$7.991 Month
- Yearly Premium7 Days trial$14.991 Year







