LightKeeper - Flashlight Alert

Contains adsIn-app purchases
Content rating
Everyone
100+
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Everyone
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About this app

Have you ever accidentally left your smartphone's flashlight on while on a train, in the street, or in a cafe?

You might have walked along without realizing it, or only noticed when someone pointed it out...

In fact, it's a small but common "annoyance" that many people have experienced at least once.

"LightKeeper" is a very simple app designed to prevent such everyday accidents.

It immediately sends a notification when it detects the flashlight is on and automatically turns it off after a set time. It solves problems such as bothering others, draining the battery, and causing the device to overheat when the flashlight is left on in your bag or pocket.

【Main Features】

* Automatically detects when the light is on
* Supports notifications and vibration
* Directly control the light ON/OFF from the app
* SOS and strobe flashing modes
* Automatic OFF function (Pro)

■ What you can do with the Pro version (one-time purchase)
* Completely hide ads
* "Automatic OFF" function that automatically turns off the light at a specified time
* Check weekly history of forgotten light-off times

Recommended for:
* Those who have forgotten to turn off their lights
* Those who accidentally turn on their lights in their pockets or bags
* Those who want to prevent battery drain
* Those who want to prevent unintended light leakage to the surroundings

Basic functions are available for free. Banner ads will be displayed within the app. Pro features can be unlocked with in-app purchases.

"LightKeeper" is simple, but surprisingly convenient.

It quietly monitors your smartphone's "accidental light-on" moments.

Flashlight, automatic shut-off, notifications, reminders, battery saving, light, monitoring

*For stable background monitoring, we may ask you to adjust settings related to notifications and battery optimization.

*Some features may vary depending on your device specifications and Android settings.
Detects accidental flashlight use, alerts you, and turns it off automatically.
Updated on
Aug 29, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

What’s new

- Updated Google Play Billing Library to the latest version
- Purchase errors now show an on-screen message instead of failing silently
- Fixed an issue where monitoring sometimes didn't resume automatically after restarting the device
Content rating
Everyone
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App support

About the developer
朴 正必
park@soycreative.com
大字風渡野123−8 さいたま市見沼区, 埼玉県 337-0017 Japan

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