Protect your children's eyesight
🔒 Full privacy — no recordings, 100% on-device
Created by optometrist Rubén Fernández, it helps control childhood myopia and digital eye strain by promoting safe screen distance and healthier screen-time habits. Android only — not available on iOS.
Now available on the Play Store!
At a glance
Stop Myopia is a Google Play Android app for families who want to reinforce healthy screen habits on phones and tablets and reduce digital eye strain in children.
- Alerts when a child gets too close to the screen (approximate distance using the front camera).
- Screen-time timer with PIN lock when time is up.
- Contrast reduction for gentler viewing day and night.
- 🔒 Camera works 100% on-device — no images or data sent to any server.
- 📱 Android only (Google Play) — not available for iPhone or iPad.
Outstanding Features
Distance detection
Uses the front camera and a precise formula to alert if the child is less than 30cm from the screen.
Usage timer
Limits screen time and locks the app with a PIN when the scheduled time ends.
Contrast reduction
Softens excess contrast by 50% during the day and 80% at night for safer viewing.
Scientific support
Incorporates links to clinical studies that demonstrate the benefits of maintaining distance and controlling use.
Why Stop Myopia?
Developed by optometrist Rubén Fernández, Stop Myopia is the only app combining distance control, screen-time timer and contrast reduction in a 3-in-1 solution for childhood myopia and digital eye strain. The camera works entirely on-device: no images are recorded or sent to any server. Available exclusively for Android — no iOS version exists.
Frequently asked questions
What is Stop Myopia and how does it help with childhood myopia?
Stop Myopia is a Google Play Android app by optometrist Rubén Fernández that helps with childhood myopia control through everyday habits: it alerts when a child gets too close (screen distance threshold around 30 cm), limits screen time, and reduces contrast.
How does Stop Myopia help with childhood myopia by improving screen distance?
It complements daily life by encouraging breaks and reading with an appropriate distance. The front camera estimates screen distance and warns when the threshold is exceeded (around 30 cm), supporting habits linked in the evidence to better screen-use practices.
Why does it need camera permission to measure screen distance?
The front camera estimates eye-to-device distance to warn when the child is closer than about 30 cm. Data handling details are available in the site privacy policy.
Which devices support Stop Myopia for childhood myopia control?
It works on Android devices compatible with Google Play. You can install it from the store by searching Stop Myopia or using package id com.cooper.myopiastop.
Is Stop Myopia free for childhood myopia control?
Price and terms (free, paid, or in-app purchases) are shown on the official Google Play listing and may change.
How does Stop Myopia detect screen distance?
It uses the front camera to estimate the distance between the eyes and the device, and triggers alerts when the configured threshold is exceeded.
What screen-distance threshold does Stop Myopia use (for example 30 cm)?
The system is configured to warn when the child is closer than about 30 cm to the screen, helping encourage safer reading distance.