A few weeks ago I began getting notifications warning me that I was running low on iCloud space. I didn't think much of it until I checked my iCloud backups.
To my surprise, between my iPhone and iPad, Skype was inflating the size of my iCloud backups by over 1 GB.
Even more bizarre was that Skype's documents and data were using up 600 MB less on the devices themselves. (Screenshots from Settings -> General -> Storage & iCloud Usage -> Storage -> Manage Storage)
The low storage warnings stopped appearing once I stated excluding Skype data from my iCloud backups, but I'm still perplexed as to why it was using so much space to begin with.
Is there a reason why Skype would need over 1GB of storage space?