The best alternatives to Flashlight are Flashlight, Shake Light, and Minimal Flashlight. If these 3 options don't work for you, we've listed a few more alternatives below.
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Shake Light is a free (without ads) Android app that help you easily turn on and off the flashlight by shaking your phone. The app can be easily configured and detects when is in a pocket to avoid miss activations. Give it a try!