It’s a preloaded checklist, each of the 15 checks is a full screen description of the check to be performed with a confirmation button at the bottom. It takes a LONG time, it’s difficult to move through quickly and it cannot be customized. It does keep a log of checks preformed but no account option, so it only logs checks on that specific device, it can’t sync across iPhone-iPad or multiple phones, if you get a new phone all previous logs are lost, so basically useless for record keeping. It doesn’t pull the software or firmware versions for the log, it doesn’t include any GPS or LAANC data and it doesn’t allow you to see what was logged, only that a check was performed. I can do a preflight checklist in my head (or on paper) thats way more effective than what this app walks you through, what I need is detailed record keeping of the exact state of my equipment and flight data and be able to access that data later on in case of a liability issue, which this app doesn’t offer. At all. Will be deleting.