As the developer of this app, I have no access to the data you enter. In making the app, I used Apple's "User Defaults" storage to store the information you enter. Apple describes this type of storage as being for "nonsensitive information". In a future update, I plan to use more secure storage. You must accept all responsibility for your choice to use the app, with this information in mind.
For more information on the User Defaults storage, click HERE.