Easy to use app. HOWEVER, you have to allow the app access to your photos, camera, files, etc. for it to work. I'm never happy about that as I'm concerned (maybe paranoid is a better word) that the Chinese companies are abusing the privilege and could ultimately use your data, location, etc. for nefarious purposes (as ALL Chinese companies are ultimately controlled by the communist government.). Seriously, if an enemy government has access to the location of every person in American via some app on their phone, it would certainly make it easy to SUPER EFFICIENTLY target population centers if they were intent on bombing the hell out of us and taking over our country. I plan on deleting the app as soon as my flashlight is retrieved and only reinstalling when needed again.