Kevin Brain Software applications do not collect personal information for any purposes. All data remains local on the device, except where you explicitly choose to share data via the Share menu (e.g. sharing a screenshot and high score in a Facebook post or an email).
Some Kevin Brain Software applications will request access to your photos in order to set a background or otherwise use the selected image as applicable to the application. The app will only access the selected image (not other images in your photo library) and will never transmit the image out of the app, except where you yourself explicitly share it via the Share menu.
Some games support the use of Game Center to record and share high scores and achievements. In this case, your high scores or achievements will be shared with Game Center, but only after the user has explicitly enabled the use of Game Center.
Free applications that display ads do not use any user tracking, or use any ad service whatsoever. Ads displayed are fixed, and stored locally within the application (rather than being independently downloaded from the internet).