The data you create in KCCounter(like projects, counters and their related data) are retained only within the app in your device. The developers of KCCounter app have no access to any such data.
At free version, Ads may be displayed. These are provided by Facebook Audience Network and no information regarding a user’s interaction with the ads is provided to the app developers. The “Advertising Identifier (IDFA)” is used by a Facebook Audience Network to offer targeted ads. This may disabled in the device.
Settings > Privacy > Advertising > Limit Ad Tracking
Settings > Google > Ads > Opt out of Ads Personalization