[Air-L] Play and iOS store

Hello, Is there any way (free APIs) to retrieve data from ios/Play store related to Apps? I'm interested on their rank, amount of users (even better in a timeseries), categories, how many apps release the developer, and all data would be useful to study their impact on the store. Someone can address me? Best -- Eng. Giuseppe Pappalardo, PhD R&D Software Engineer https://www.linkedin.com/in/giuseppepappalardo/ phone: +39 349 73 97 526 --------------------------