I do not store your data.  While both SCraMP and FVdrills provide users the ability to save and send data, that data is recorded and handled by the user’s device.  None of that is shared with me, unless you physically type in my email address and email it to me.  Your data is yours.  I do periodically review the opt-in usage analytics you may provide Apple.  To review your opt-in/opt-out analytics settings, on your device navigate to Settings->Privacy->Analytics.