avoid this especially as a business
Firstly the app takes 180MB of space, for a queue system program? Secondly it has major flaws with the scheduling and cancellations of reservations. If you are forced to use CleverQ as a consumer and a web version is availabe then stay far away from the app. And if you are a business looking for a system like this then there are open source alternatives that are far better and will increase customer satisfaction because noone wants to struggle with technology as bad as that of this program.