Secret Lock is a free Android app developed by corp.smpleinc that allows you to manage and secure personal photos, videos, documents, and PIN codes. With this app, you can create folders, lock them with a password, and rearrange them as per your convenience. The app also provides a wallpaper feature for each folder, allowing you to decorate and customize them according to their names.

One of the standout features of Secret Lock is its secret lock camouflage, which allows you to use the app disguised as a fake stopwatch or thermometer app. Additionally, the app provides both dark and light modes for comfortable usage. In case you accidentally delete any picture or video, the app has a trash recovery feature that allows you to restore them back to the gallery or any of the folders. Lastly, Secret Lock supports backup to Google Drive, making it easier for you to manage your valuable information safely.

Overall, Secret Lock is an excellent app for those who want to keep their personal photos and videos secure. With its user-friendly interface and useful features, it is definitely worth giving a try.