Writing a cross platform iOS/Android/Web with real-time sync across all three platforms. that’s going to take more than a week.
I was always interested in the science of crowds and crowd control. A business wants to stay at maximum capacity but anything over that limit can become dangerous. Similarly counting people as they come and go seems easy but what happens when the entrance and exit are not near each other. The only solution I’d seen to this problem was a walkie-talkie and a pen and paper, surely not the the most reliable system.
Tally Occupancy allows for iOS and Android devices to share a common tally in real-time. The pro upgrade allows oversight and history to be managed from a browser on Windows or Mac. the is not privacy invading permissions required and the application is designed to be light on data and battery.
The onboarding of a device takes just a few seconds as it’s as simple as pasting a share code. Take a look for both iOS and Android.