If you're not paying for it, you become the product
This is often said and often true. But not with PictureGo! PictureGo! is and has been a hobby project for years (see also: the history of PictureGo!). PictureGo! does not collect data with the exception of maintaining a list per country with the number of people who ever installed PictureGo! It does not contain spyware or malware of any kind.