Contact Notes vs App Lock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Contact Notes
Effortlessly manage your professional network by capturing notes, tracking interactions, and keeping contact details updated. View people and organizations in one place to build stronger relationships and maintain context.
- Manage personal and professional contacts
- Track relationship history
- Record meetings, calls, and notes
- Organize contacts into groups
- Synchronize contacts across devices
- Store detailed contact information
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It’s quick and easy to manage your professional network. Capture notes, track conversations and keep important contact details up to date wherever you are - whether you're in a meeting, travelling, networking or working remotely. View people and organisations in one place and maintain a complete history of interactions, helping you build stronger relationships and never lose important context. - Easily manage personal and professional contacts - Work with people, organisations and activities - Record meetings, calls, emails and notes - Track relationship history and engagement over time - Store detailed contact information and important notes - Organise your network into groups and categories - Search and find contacts quickly - Keep your contacts synchronised across your devices Subscribe for more features such as advanced relationship management, cloud sharing, collaboration, reporting, exporting to PDF format and additional productivity tools. Terms of Use: https://internetstack.com/terms Privacy Policy: https://internetstack.com/privacy
App Lock
This tool helps parents manage children's smartphone usage, preventing social media and game addiction. It offers features to lock apps, set focus modes, and prevent unwanted deletions or installations, promoting responsible digital habits and privacy.
- Parental control for social media and games
- App lock for private apps
- Focus mode for concentration
- Password protection for apps
- Prevent app deletion
- Limit app installations
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This is a screen management tool designed specifically for parents, ensuring that you no longer have to worry about your child becoming addicted to social media and games. It offers a range of features to help you exercise comprehensive parental control: FEATURES - Parental control: Effectively prevents children from becoming addicted to social media and games, assisting them in using their smartphones more responsibly. - App lock: You can easily use the app lock feature to lock applications such as photo albums, messaging apps, and other private apps at any time to ensure the protection of sensitive information. - Focus mode: Enhances children's learning efficiency and helps them concentrate better. - Password protection: Setting password protection and integrating it with the app lock ensures enhanced control over applications. - Prevent app deletion: The app lock helps prevent children from accidentally or intentionally deleting important apps. - Limit app installations: Effectively manages children's installation of new apps by integrating the app lock feature, vigorously maintaining their online safety. This application helps parents better manage their children's screen time, with a special focus on privacy protection and reducing disruptions, creating a healthy online environment for children. If you have any questions or suggestions while using the app, please feel free to provide feedback within the app.
Screenshots
Verdict
The clearest difference is review sentiment: App Lock at 77% against Contact Notes's 0%. App Lock also leads on in-app purchases (none vs 2) and ratings volume (378 vs 1). Contact Notes's advantage is rating (5.0 vs 4.4) and update cadence (every 3 days vs every 3 weeks). On price 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. Contact Notes sells 2 in-app purchases, starting at $2.99 per month. App Lock asks for nothing beyond the download.
Contact Notes holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: App Lock has 378 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 0% of Contact Notes's written reviews are positive against 77% of App Lock's, so the app with the better star average is not the one people write more warmly about.
Contact Notes ships an update every 3 days, App Lock every 3 weeks. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.
| Parameter | Contact Notes | App Lock |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.4 (378 ratings) |
| Positive reviews | 0.0% of reviews | 77.3% of reviews — better |
| Number of ratings | 1 | 378 — better |
| Update frequency | Every 3 days — better | Every 3 weeks |
| Ads | — | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free — better | Ad-supported |
| Devices | — | iPhone, iPad — better |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Internet Stack | 碧 郑 |
Customer experience
Contact Notes
App Lock
Bugs and requests
Contact Notes
Not enough reviews yet to summarise bugs or requests.
App Lock
Reported bugs
6 issues- Unlocking button not working
- App locks all apps instead of selected ones
- App locks for a set time and opens automatically
- App only locks for one time
- No persistent locking, requires re-locking manually
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- Cannot uninstall the app
Requested features
6 requests- Reduce ads
- Add password lock with words
- Option to hide apps including Settings
- Apps should automatically lock again when exiting
- Improve time lock settings
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- Auto-lock after exiting app
In-app purchases
Contact Notes
- Pro - Monthly$2.991 Month
- Pro - Yearly$29.991 Year
App Lock
No in-app purchases









