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Effective date

November 5, 2026

Night Shield

Privacy Policy

Effective: November 5, 2026Updated: November 5, 2026

Privacy Policy for Night Shield

Last updated: November 5, 2026 · Effective: November 5, 2026

This Privacy Policy explains how Laxmi Solutions ("We", "Us", "Our") handles information in connection with Night Shield, our blue light filter and screen dimmer for Android (package com.vi5hnu.nightshield). Night Shield works without an account and keeps your settings on your own device.

1. The Short Version

  • You don't create an account. We don't ask for your name, email, phone number or contacts.
  • Your filter settings, schedules, per-app rules, profiles and usage statistics stay on your device. We don't receive them.
  • The free version shows ads through Google AdMob, which uses your device's advertising ID. In regions that require it (such as the EEA and UK), we ask for your consent first.
  • Night Shield Pro, a one-time purchase through Google Play, removes all ads and unlocks every feature. You can also watch one ad to try Pro features for 24 hours (ads are still shown during the trial).
  • We add no analytics, tracking or crash-reporting SDK of our own, and we run no server for the app.
  • Location is used only if you turn on Auto sunset & sunrise, and stays on your device.

2. Information We Collect

We designed Night Shield to collect as little as possible.

2.1 Your Settings and Usage Statistics

Your filter colour, intensity and dimming, schedules, per-app rules, profiles, timers, theme, widget style and other preferences are stored locally in the app's private storage on your device. To show the 7-day report and the weekly summary notification, the app also records, on your device, how many minutes the filter was on each day. None of this is transmitted to us and we have no way to read it.

2.2 Location (Auto Sunset & Sunrise only)

If you turn on Auto sunset & sunrise, the app asks for approximate (coarse) location permission. It reads your device's last known location (or requests a single location update), and uses Android's built-in geocoder to turn it into a city name shown in the app. The coordinates and city name are saved on your device and used only to calculate local sunset and sunrise times, which are computed on the device. Depending on your device, Android's geocoder may contact its provider (usually Google) over the network to look up the city name; we receive nothing. Location is not requested for any other feature, and you can revoke the permission at any time in Android settings.

2.3 Installed Apps and the Accessibility Service

To let you create per-app rules, the app lists the apps on your device that have a launcher icon. If you choose to enable Night Shield's Accessibility Service, it is notified when the app in the foreground changes and reads only that app's package name, so it can pause or recolour the filter for apps you have set rules for. It is configured so that it cannot read the content of your screen (window content retrieval is disabled), and it does not record which apps you use. The list of apps and the package names are used on the device only and are never sent to us.

2.4 Motion and Light Sensors

Shake to toggle uses your device's accelerometer, and Adaptive intensity uses the ambient light sensor, to react to shakes and room brightness. Sensor readings are processed on the device in real time and are not stored or sent anywhere.

2.5 Advertising

The free version of Night Shield shows a banner ad, an ad when you open or return to the app (at most about once an hour), an occasional full-screen ad after you turn the filter off, and, only if you choose to watch one, a rewarded ad that starts the 24-hour Pro trial. Ads are not shown to users who have bought Night Shield Pro.

Ads are served by Google AdMob. To serve and measure ads and to prevent fraud, Google's Mobile Ads SDK may collect your device's resettable advertising ID, your IP address (and an approximate location derived from it), device and app information, and how you interact with ads, together with diagnostic data. This data goes to Google, not to us, and is handled under Google's Privacy Policy and how Google uses information from apps that use its services.

Where the law requires it (for example in the EEA, the UK and Switzerland), Night Shield asks for your consent through Google's User Messaging Platform before ads are requested, and no ad is loaded until your choice allows it. Your choice is stored on your device and read by Google's Mobile Ads SDK. Where you have the right to change it, you can do so at any time under Settings → About → Ad privacy choices.

Each ad request includes a fixed list of keywords that describe the app's subject (such as "sleep", "eye care" and "blue light") so that relevant ads can be shown. These keywords are the same for every user and contain nothing about you.

The app keeps a few counters on your device so that ads are not shown too often (for example, how many times the filter has been turned off since the last full-screen ad, and when it was shown). These stay on your device.

2.6 The 24-Hour Pro Trial

The trial is offered only when your device has a working internet connection, and is granted only when the ad reports that it was watched to the end. The trial's start time is stored on your device, and the app checks the device clock to make sure the trial cannot be extended by changing the time. These checks happen on the device and nothing about them is sent to us. The trial record is excluded from Android backups.

2.7 Purchases (Night Shield Pro)

Night Shield Pro is a one-time purchase processed by Google Play Billing. Google handles your payment; we never see your card or payment details. The app asks Google Play whether the Google account on the device owns Pro, and keeps the result on your device so Pro features work immediately when you open the app. It checks with Google Play again when you open or return to the app, and when you tap Restore purchase (which also restores Pro on a new phone). If Google Play no longer lists the purchase (for example after a refund), the app turns Pro off on your device. The Pro status is excluded from Android backups and is never sent to us.

2.8 Backup & Restore (Pro)

Export settings writes your settings to a file named nightshield_backup.json at a location you choose using Android's file picker, and Import settings reads a file you pick. The file contains your filter settings, schedules, per-app rules, profiles and, if you use Auto sunset & sunrise, your saved coordinates and city name. We never receive this file; keep it somewhere you trust, and be aware that anyone you share it with can read it.

Separately, if you have Android backup turned on, Android may back up the app's settings to your Google account, under Google's terms. The Pro status and the Pro trial are excluded.

2.9 Automation (Pro)

Night Shield can be turned on, off or toggled by intents sent from automation apps such as Tasker, or from adb. These requests are handled on the device and only control the filter; they are not logged or sent anywhere.

2.10 Ratings and Reviews

After you have used Night Shield for a while, the app may show Google Play's in-app review card, and Settings → About → Rate Night Shield opens the Play Store. Reviews are submitted to Google Play under Google's terms; we only see what Google Play publishes.

2.11 Device Permissions

PermissionWhy it's used
Display over other appsTo draw the colour filter and dimming layer over the screen.
Foreground serviceTo keep the filter, and the shake detector when the filter is off, running reliably with a visible notification.
NotificationsTo show the filter's controls, eye-break reminders and the weekly summary.
Exact alarmsTo turn the filter on and off at the times you schedule.
Run at startupTo restore the filter and your schedules after the device restarts.
Approximate locationOnly for Auto sunset & sunrise (Section 2.2).
Network stateTo offer the rewarded Pro trial only on a working internet connection.
InternetUsed by Google AdMob, Google Play Billing and Android's geocoder.
VibrateFor haptic feedback when you shake to toggle the filter.
Ignore battery optimisationsAsked only when you tap the in-app prompt to exempt Night Shield, so the filter isn't stopped by battery savers.
Accessibility Service (optional)For per-app rules (Section 2.3).

3. How We Use Information

Because your settings stay on your device, we use information only to: show ads; provide Night Shield Pro and the Pro trial; and keep the app working. We do not sell your personal information.

Where the GDPR or a similar law applies, the legal bases are: consent for advertising that requires it (withdraw it under Ad privacy choices); performance of a contract for providing Night Shield Pro; and our legitimate interests in showing non-personalised ads that keep Night Shield free, and preventing fraud. Location is used only after you grant the permission for Auto sunset & sunrise.

4. Third-Party Services

Night Shield relies on the following third parties, whose handling of data is governed by their own privacy policies:

5. Your Advertising Choices

  • Remove ads entirely: buy Night Shield Pro in the app.
  • Change ad consent (where offered): Settings → About → Ad privacy choices.
  • Reset or delete your advertising ID: on Android, Settings → Privacy → Ads (or Settings → Google → Ads on some devices).
  • Interest-based ads: see Google's Ads Settings.

6. Data Retention

Your settings, schedules, saved location and usage statistics remain on your device until you change or delete them in the app, clear the app's storage, or uninstall the app. The 7-day report shows only the last seven days. We hold no copy of any of it, so there is nothing for us to keep or delete on our servers. Google keeps ad, purchase and backup data under its own retention policies.

7. Security

Your data is stored in the app's private storage on your device, protected by your device's own security. Settings files you export are stored wherever you choose to save them. No method of storage or transmission is 100% secure, but because your data stays on your device, its security largely depends on the security of your device.

8. Children's Privacy

Night Shield is a general-audience utility and is not directed to children under 13 (or the equivalent minimum age in your country). It doesn't ask anyone for personal information, and we do not knowingly collect personal information from children. If you believe a child has sent us personal information, contact us and we will delete it.

9. Your Rights

Depending on where you live (for example under India's Digital Personal Data Protection Act, 2023, the GDPR or the CCPA/CPRA), you may have rights to access, correct or delete your personal information, to object to or restrict certain processing, and to withdraw consent (for ads, under Ad privacy choices). Because Night Shield keeps your data on your device and does not send it to us, you can exercise most of these rights directly: change your settings in the app, revoke permissions in Android settings, or clear the app's storage to remove everything. For advertising data held by Google, use the choices in Section 5 or contact Google. For any other request, contact us (Section 12).

We do not sell your personal information. Under some US state laws, the use of the advertising ID for personalised ads may count as "sharing"; you can opt out by limiting or deleting your advertising ID (Section 5) or by buying Night Shield Pro.

10. International Users

Night Shield is operated from India. Google processes ad, purchase, geocoding and backup data in many countries. Information may therefore be processed in countries other than your own, under Google's safeguards.

11. Changes to This Policy

We may update this Privacy Policy from time to time. When we do, we will revise the "Last updated" date above and, for material changes, provide a more prominent notice where appropriate. Continued use of Night Shield after an update constitutes acceptance of the revised policy.

12. Contact Us

Questions about this policy or your privacy? Contact Laxmi Solutions at laxmi.solutions.2025@gmail.com.

Night Shield · Privacy Policy · Effective November 5, 2026