# Focus Guardian — Prevent drowsiness disruptions > Machine vision fatigue prevention alert system with customizable monitoring. (iPhone/iPad app by 博宇 周.) - Source: https://appshunter.io/ios/app/focus-guardian/id6477325074 (this page in markdown: same URL + `.md`) - Developer: [博宇 周](https://appshunter.io/developer/1678039102) - Category: Utilities, Lifestyle - Price: $3.99 - Rating: 4.67/5 from 3 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 3 MB - Languages: Arabic, Danish, Dutch, English, French, German, Greek, Hungarian, Indonesian, Italian and 15 more - Released: 2024-07-03 - Data updated: 2026-06-06 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/focus-guardian/id6477325074/reviews.md ## What is Focus Guardian? FocusGuardian: Your Reliable Virtual Co-Pilot and Study Partner Utilizing the powerful computational capabilities and advanced imaging technology of the iPhone, FocusGuardian delivers a machine vision-driven fatigue prevention alert system. This app offers extensive customization options, allowing you to tailor the features to meet your specific needs. Whether you are a student or a professional, FocusGuardian is your ally, assistant, and essential tool. High Customization: 1. Activate only one monitering—choose either dozing monitoring or yawning detection. 2. Set alerts for when just one eye closes. 3. Customize the "FocusGuardian" experience based on the size of your eyes and mouth. 4. Record only, no alerts—avoid frequent disturbances while gathering valuable data on your work habits. 5. Customize alert tones for a truly personalized experience. 6. Compatible with AirPods to ensure your environment remains undisturbed. Human-Centric Design, Avoiding Embarrassment: 1. Monitor without video streaming to conserve system resources, reduce device heating, and extend usage time. 2. Turn off video streaming while keeping monitoring active. Record Every Moment of Protection: 1. Excellent guard record management system organizes your data neatly. 2. Set custom "auto-archive days" to keep your main page both minimalist and convenient. Additional Practical Features: 1. Low volume reminder ensures alert effectiveness. 2. Customize the duration of the alert tone. 3. Zoom in and out of the camera view. 4. Brighten the background to serve as a fill light. 5. Beautifully designed main page layout. Privacy Protection: All computations are performed locally, ensuring that your valuable privacy data is never compromised. Purchase Policy: One-time payment for lifetime maintenance. ## Key features - Machine vision-driven fatigue detection - Dozing and yawning monitoring - Customizable alert triggers and tones - Privacy-focused local processing - Video streaming toggle - Guard record management ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/focus-guardian/id6477325074/reviews.md ### 4/5 — Perfect for studying! *2025-03-31* I tend to doze off when studying this works as advertised. More customization is needed like activate yawing alarm after a certain number of yawing per a time cycle is reached. More preset alarms that you don’t need to upload also vibriation could be added for say a smart phone. But works as advertised a demo would be great how ever for the cost O makes sense to take the chance. ### 5/5 — Thank u *2024-07-06* I love this app; it has truly given me more confidence for my 8 AM classes. I like to place my phone beside me, and its alerts for drowsiness are very responsive. **Developer response:** I'm thrilled to hear that our app is your trusty sidekick for those 8 AM classes! Placing your phone beside you is a great move—it's like having a personal drowsiness detective on duty. Stay awake and stay awesome! ## Frequently asked questions about Focus Guardian ### What is Focus Guardian? Focus Guardian is a utility app that uses your iPhone's camera to detect signs of drowsiness, such as yawning or closed eyes, and provides alerts to help you stay alert. It offers extensive customization for monitoring and alerts. ### How does Focus Guardian prevent drowsiness? It utilizes machine vision technology to monitor your face for indicators of fatigue. You can customize it to detect specific actions like yawning or when one or both eyes close, triggering alerts. ### Can I customize the alerts in Focus Guardian? Yes, Focus Guardian offers high customization. You can choose which monitoring to activate, set specific alert conditions like when just one eye closes, and even customize alert tones and their duration. ### Is Focus Guardian private? Yes, Focus Guardian prioritizes privacy. All computations are performed locally on your device, ensuring that your personal data is never compromised or shared. ### Does Focus Guardian have ads? No, Focus Guardian does not contain advertisements. It is a paid application with a one-time purchase for lifetime maintenance. ### What devices is Focus Guardian compatible with? Focus Guardian is designed for iPhone and is compatible with AirPods for undisturbed alerts. It requires iOS 4+ and is available on iPhone. ### How often is Focus Guardian updated? The app was last updated on May 5, 2025, with version 1.0.3. This indicates regular updates to improve functionality and reliability. ### What is the price of Focus Guardian? Focus Guardian is available for a one-time purchase of $3.99, which includes lifetime maintenance. There are no ongoing subscription fees. ## Version history (last 4 releases) ### 1.0.3 — 2025-05-05 More detailed information about the author ### 1.0.2 — 2025-01-27 Updated using the tutorial demo video ### 1.0.1 — 2024-07-18 Fixed issues with localized translations not displaying correctly in some languages. ### 1.0 — 2024-07-04 No release notes. ## Apps similar to Focus Guardian | App | Rating | Price | Category | | --- | --- | --- | --- | | [Dolphin BMS](https://appshunter.io/ios/app/dolphin-bms/id6746481788) | — | Free | Utilities | | [EchoPin - Trace Every Sound](https://appshunter.io/ios/app/echopin-trace-every-sound/id6749384899) | — | Free | Utilities | | [Noloop](https://appshunter.io/ios/app/noloop/id6744028749) | — | Free | Utilities | | [TimeGuardian: Parental Control](https://appshunter.io/ios/app/timeguardian-parental-control/id6683296796) | — | Free | Utilities | | [Frog Alarm Clock Media Player](https://appshunter.io/ios/app/frog-alarm-clock-media-player/id1570931788) | 5.0 (4) | Free | Utilities | | [Don't move my phone](https://appshunter.io/ios/app/dont-move-my-phone/id6738577508) | — | Free | Utilities | ## More apps by 博宇 周 - [EchoEcho AI](https://appshunter.io/ios/app/echoecho-ai/id6756264440) All apps by 博宇 周: https://appshunter.io/developer/1678039102 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-06.*