That's pretty cool, how many paid installations out the 20k if that's not too intrusive?
With the scope of the information that I can collect,and taking in consideration the paid accounts, and API usage, I could say around 5k? To be honest I don't know exactly how many installations are out there, I don't ping.
Imo the number of installs is data just about the surface. Is the base number to define your size, but it has a completely different mean here, it just miss the number of actual
end users. The actual people using it for sharing their photos is beyond my knowledge š±