The answer to this varies based on your hardware (and has almost nothing to do with the app). That being said, the Elite HRV app is designed to remain connected as long as you are within signal range (even if some heart beats are dropped due to distance).
Why discharge your heart rate monitor? Sometimes the heart rate monitor can retain some residual charge that causes interference in the signal. These steps will remove any residual charge and allow for a cleaner signal. Depending on the monitor, this may have to be done every once in a while.
For Bluetooth connection issues, we have come up with a list of troubleshooting tips that seem to help in most cases.
Some Android users have reportedly fixed their Bluetooth issues by simply clearing the Bluetooth Cache on their phone.