We do not collect any personal information about the users of our apps. Only if you contact us by email for any reason we keep your email address for future communications. We do use google analytics to measure success of our marketing campaign.
Some of our free Apps may contain in-app purchases. We clearly mention in application description if our app contains any In-App purchases.
Some of our free Apps may contain advertisements. We clearly mention in application description if our application has any with advertisements.