First, the app does not collect, mine, harvest or do anything with your data. Firearm information is just as sensitive as your social security number or credit card information.Second, the app has a passcode. It is activated by using the iOS Settings App."No more paper and pen at the range!" Gun Log SPC is a range log that tracks your firearms, ammunition, and results at the range. You can discover which ammo is most accurate or has the fewest failures, how many rounds you have fired, and how much ammunition is on hand. But wait, there's more! There is a G1 external ballistics calculator that estimates bullet drop, PDF reports that include photos of your firearm or target, and much more.Before you buy please go to the Developer Website and read about the App. The link is listed in the App Store. This app is not a simple list but instead an app that logs range results, ammo usage, firearms, ballistic drop tables, and has reports that allow you to analyze your shooting, firearms and ammunition, and improve your ability and to know what ammunition is reliable and accurate. You do not have to use all of the functionality, but it is there when you need it. Dont let the low price fool you, this is a very complete range log and inventory app!Gun Log SPC stores firearm inventory, ammunition inventory, and shooting results with the ability to export your information through copy/paste, email, or printing of text reports.Units are only in U.S. yards and inches. There is no metric or other measurement system support.Passcode: YES (Use the iOS device Settings App to enable)Firing Sessions: YESFiring Sets: YESBallistics Calculator: YESFirearm Inventory: YES Multiple Calibers per Firearm: YESPhotos: YES (Firearm, Firearm Configuration, Accessory, Firing Set Target)Purchase/Sale Information: YESMaintenance Log: YESAmmunition Log:YESAccessory Inventory: YESReports: YESEmail and Printing: YESPDF Reports: YES (Firearm or Firing Set)Backup: YES (via iTunes file sharing)Transfer Data to all of your compatible iOS devices: YES (via iTunes file sharing)iPhone/iPod Touch: YESiPad: YESiCloud Storage: NO (Your data stays where you want it.)There are detailed tutorials and screen shots found on the Developer Site!If you have setup your email on your iOS device Gun Log SPC uses Apple's email integration to launch email and automatically fill in the message body with the report text.To transfer the data from one device to another, just plug your iOS device into your computer, launch iTunes, select the device, select Apps, then select Gun Log SPC and under File Sharing drag "Shooting_Buddy.sqlite" to your desktop. Reverse these steps to restore a backup or transfer the data to another device.(WARNING: Do not modify the database outside of Gun Log SPC. Such actions are not tested and are not supported. The schema and design of the database is the copyrighted work and design of Slinkworks, LLC.)------------------------------------Gun Log SPC versus Gun Log------------------------------------The differences are:Gun Log SPC can print and email reports, Gun Log cannot print or email,.