First of, you can use this app only if your device's battery is less than 5%.
The idea is to let such users come together in a chat room, so that all their devices can die together.
There is no practical use of this app I can think of. It is more of a just-for-fun one-time app. Moreover, it is a paid app, so be wise before you decide to buy it ;)
Google Play Store link
Apple App Store link
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