Shakenlight switches your phone's flashlight on and off when you shake the device. It keeps working while the screen is off or locked, so you don't have to wake the phone, unlock it and hunt for a button before you get light.

Shake once for light. Shake again to turn it off.

Useful when you need the torch immediately and can't look at the screen: • reaching for the phone in the dark beside the bed • finding a keyhole with your hands full • looking behind furniture or under a desk • checking on a noise at night

How it works

Turn shake detection on once in the app. From then on a shake toggles the flashlight — screen locked, phone in a pocket, phone in a bag. There is no widget to find and nothing to unlock.

No camera permission

Shakenlight never asks for camera access. Android allows the flash LED to be switched without it, and this app never opens the camera. It cannot take a photo or record video — it isn't built to.

The only permission you have to grant is notifications, which Android requires so that shake detection can keep running in the background. Exempting the app from battery optimisation is offered but optional.

No ads, no tracking

No advertising, no analytics, no crash reporting, no accounts, no sign-up. The app collects nothing and sends nothing anywhere. Accelerometer readings are examined in memory to spot a shake and then discarded — never stored, never transmitted. Your settings stay on the device.

The whole download is under half a megabyte.

Controls

• Adjustable sensitivity — decide how hard a shake has to be • Left-right pattern mode — require three quick side-to-side swings, so a single jolt like setting the phone down or a bump in a bag doesn't set it off • A short vibration confirms the toggle, so you know it worked without looking • A Stop button in the notification switches detection off in one tap

Battery

Where the phone provides a low-power motion sensor, Shakenlight uses it. That sensor keeps watching for movement while the main processor sleeps, which costs far less battery than keeping the processor awake.

A permanent notification appears while shake detection is running. Android requires one from any app that keeps working in the background, and it doubles as the quickest way to switch the feature off.

Free trial, then one payment

Everything works for seven days. After that the flashlight switches itself off thirty seconds after each shake unless you buy the one-time unlock. A single payment, no subscription, no recurring charge.

Requirements

Android 8.0 or later, on a phone with a flash LED and an accelerometer.

Please note

Some manufacturers run aggressive battery managers that stop background apps regardless of Android's own settings. If shake detection stops working after a while, allow Shakenlight to run in the background — usually found under Battery, App launch or Autostart in your phone's settings.

Privacy policy: https://www.thuje.se/en/legal/shakenlight-privacy/