The app can find other devices also if they doesn't have the same app. That is a unique feature, because all the similar apps on the store can only find devices with the same app installed.
Social distancing, also called physical distancing, means keeping space between yourself and other people outside of your home. Limit close contact with others outside your household in indoor and outdoor spaces. Since people can spread the virus before they know they are sick, it is important to stay away from others when possible, even if you, or they, have no symptoms.
Although it isn't accurate, this app has been created to help people remembering to keep distance from each other. Very important aspect during periods of virus spreading.
The functioning is very simple: after you give all the permissions, it starts to scan for other devices, relying on the scan frequency you decided.
There are three frequency scan mode: MIN, MEDIUM and MAX.
Each one has a scan different period, from a minimum of 20 seconds to a maximum of 1 minute.
If it finds some, it will notify you to remember to keep the distance with a notification.
I'd like to make it clear, that personal data or vital private information will never be collected by this app.
It will receive much more improvement, but for now, it's the ONLY app on the Play Store which can really does what it was meant to do. If you want to give some advice, please contact me with an email.
I hope you'll find it useful and not irritating.