Blue Light Filter(+Screenshot)

This app is an accessibility app designed to help users who experience discomfort from screen light, including people with photophobia (sensitivity to bright light) and light sensitivity.

Using the AccessibilityService API, the app displays a filter across the entire screen, including system areas and the notification shade, allowing users to reduce light stimulation by adjusting the filter color and opacity for a more comfortable viewing experience.

Users can adjust the filter color and opacity according to their visual needs and usage environment, supporting comfortable daily smartphone use.

Who This App Is For

1. People with photophobia (sensitivity to bright light)

2. People with light sensitivity

3. Those looking to reduce fatigue or discomfort caused by screen light

4. Older adults or anyone sensitive to screen glare

5. Users who want to customize filter color and opacity for comfortable viewing

(Visual perception varies from person to person. Users with color vision differences can also adjust the filter to suit their individual needs and environment.)

* This app is not a medical device and is not intended to diagnose, treat, or improve medical conditions.

It is an accessibility tool designed to help users adjust their screen display for greater visual comfort.

Before Use

Visual perception varies from person to person.

Adjust the filter color and opacity to suit your device, environment, and personal visual preferences for a more comfortable viewing experience.

By customizing the screen display to suit individual needs, the app supports comfortable daily smartphone use.

Key Accessibility Features

1. Full-Screen Filter Display

Displays a filter across the entire screen, including system areas and the notification shade, to help reduce light stimulation.

2. Filter Color and Opacity Adjustment

Adjust the filter color and opacity to match your individual visual needs.

3. Schedule Feature

Automatically enables or disables the filter at specified times.

4. Quick Operation Support

Quickly toggle the filter ON/OFF from the notification bar or shortcuts.

5. Screenshot Feature

Capture screenshots while the filter is displayed. The filter can be temporarily hidden automatically during capture. Users can also exclude the status bar, navigation bar, and display cutout area if desired.

6. Accidental Touch Prevention

Configure an area near the screen edges to help prevent accidental touches. The color, opacity, and width of the touch prevention area can be customized.

Use of AccessibilityService API

This app uses the AccessibilityService API to support users with photophobia (sensitivity to bright light), light sensitivity, and related visual discomfort.

Purpose of Use

The AccessibilityService API is used solely for the following accessibility features:

1. Display a full-screen filter, including system areas and the notification shade, to help reduce light stimulation.

2. Capture screenshots while the filter is displayed, with optional temporary filter hiding during capture.

The AccessibilityService API is not used for any other purpose.*

Privacy and Data Collection

This app does **NOT** collect, transmit, or store personal information, on-screen content, user input, passwords, or other sensitive information through the AccessibilityService API.

The AccessibilityService API is used solely for the accessibility features described above.

The AccessibilityService API is enabled only with the user's explicit consent and can be disabled at any time through the app or the device's system settings.

Network Communication Permission

Network access is used only to display advertisements.

Use of Advertising ID

The Advertising ID is used only to display advertisements.

Privacy Policy

https://markn.cloudfree.jp/AndroidApp/privacy